Merge pull request #8172 from donaldsharp/more_pytest_bgp

More pytest stuff

tests/topotests/all-protocol-startup/test_all_protocol_startup.py

@@ -352,7 +352,7 @@ def test_converge_protocols():
         actual = (
             net["r%s" % i]
             .cmd(
-                'vtysh -c "show ip route" | sed -e \'/^Codes: /,/^\s*$/d\' | env LC_ALL=en_US.UTF-8 sort 2> /dev/null'
+                "vtysh -c \"show ip route\" | sed -e '/^Codes: /,/^\s*$/d' | env LC_ALL=en_US.UTF-8 sort 2> /dev/null"
             )
             .rstrip()
         )
@@ -383,7 +383,7 @@ def test_converge_protocols():
         actual = (
             net["r%s" % i]
             .cmd(
-                'vtysh -c "show ipv6 route" | sed -e \'/^Codes: /,/^\s*$/d\' | env LC_ALL=en_US.UTF-8 sort 2> /dev/null'
+                "vtysh -c \"show ipv6 route\" | sed -e '/^Codes: /,/^\s*$/d' | env LC_ALL=en_US.UTF-8 sort 2> /dev/null"
             )
             .rstrip()
         )

tests/topotests/bfd-bgp-cbit-topo3/test_bfd_bgp_cbit_topo3.py

@@ -44,7 +44,8 @@ from lib.topolog import logger
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
-pytestmark = [pytest.mark.bfdd]
+pytestmark = [pytest.mark.bgpd, pytest.mark.bfdd]
+
 
 class BFDTopo(Topo):
     "Test topology builder"
@@ -65,6 +66,7 @@ class BFDTopo(Topo):
         switch.add_link(tgen.gears["r2"])
         switch.add_link(tgen.gears["r3"])
 
+
 def setup_module(mod):
     "Sets up the pytest environment"
     tgen = Topogen(BFDTopo, mod.__name__)

tests/topotests/bfd-isis-topo1/test_bfd_isis_topo1.py

@@ -92,6 +92,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.bfdd, pytest.mark.isisd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/bfd-ospf-topo1/test_bfd_ospf_topo1.py

@@ -92,6 +92,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.bfdd, pytest.mark.ospfd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/bfd-profiles-topo1/test_bfd_profiles_topo1.py

@@ -45,7 +45,8 @@ from lib.topolog import logger
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
-pytestmark = [pytest.mark.bfdd, pytest.mark.isisd, pytest.mark.ospfd]
+pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd, pytest.mark.isisd, pytest.mark.ospfd]
+
 
 class BFDProfTopo(Topo):
     "Test topology builder"

tests/topotests/bfd-topo1/test_bfd_topo1.py

@@ -45,7 +45,8 @@ from lib.topolog import logger
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
-pytestmark = [pytest.mark.bfdd]
+pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd]
+
 
 class BFDTopo(Topo):
     "Test topology builder"

tests/topotests/bfd-topo2/test_bfd_topo2.py

@@ -46,7 +46,8 @@ from lib.topolog import logger
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
-pytestmark = [pytest.mark.bfdd, pytest.mark.ospfd]
+pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd, pytest.mark.ospfd]
+
 
 class BFDTopo(Topo):
     "Test topology builder"

tests/topotests/bfd-topo3/test_bfd_topo3.py

@@ -45,6 +45,8 @@ from lib.topolog import logger
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd]
+
 
 class BFDTopo(Topo):
     "Test topology builder"

tests/topotests/bfd-vrf-topo1/test_bfd_vrf_topo1.py

@@ -46,7 +46,8 @@ from lib.topolog import logger
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
-pytestmark = [pytest.mark.bfdd]
+pytestmark = [pytest.mark.bfdd, pytest.mark.bgpd]
+
 
 class BFDTopo(Topo):
     "Test topology builder"

tests/topotests/bgp-aggregator-zero/test_bgp_aggregator_zero.py

@@ -40,6 +40,8 @@ from lib.topogen import Topogen, TopoRouter, get_topogen
 from lib.topolog import logger
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bgpd]
+
 
 class BgpAggregatorAsnZero(Topo):
     def build(self, *_args, **_opts):

tests/topotests/bgp-basic-functionality-topo1/test_bgp_basic_functionality.py

@@ -91,6 +91,9 @@ from lib.bgp import (
 )
 from lib.topojson import build_topo_from_json, build_config_from_json
 
+pytestmark = [pytest.mark.bgpd, pytest.mark.staticd]
+
+
 # Reading the data from JSON File for topology creation
 jsonFile = "{}/bgp_basic_functionality.json".format(CWD)
 try:

tests/topotests/bgp-ecmp-topo2/test_ebgp_ecmp_topo2.py

@@ -324,6 +324,7 @@ def test_modify_ecmp_max_paths(request, ecmp_num, test_type):
 
     write_test_footer(tc_name)
 
+
 @pytest.mark.parametrize("ecmp_num", ["8", "16", "32"])
 @pytest.mark.parametrize("test_type", ["redist_static", "advertise_nw"])
 def test_ecmp_after_clear_bgp(request, ecmp_num, test_type):
@@ -349,7 +350,7 @@ def test_ecmp_after_clear_bgp(request, ecmp_num, test_type):
             addr_type,
             dut,
             input_dict_1,
-            next_hop=NEXT_HOPS[addr_type][:int(ecmp_num)],
+            next_hop=NEXT_HOPS[addr_type][: int(ecmp_num)],
             protocol=protocol,
         )
         assert result is True, "Testcase {} : Failed \n Error: {}".format(
@@ -372,7 +373,7 @@ def test_ecmp_after_clear_bgp(request, ecmp_num, test_type):
             addr_type,
             dut,
             input_dict_1,
-            next_hop=NEXT_HOPS[addr_type][:int(ecmp_num)],
+            next_hop=NEXT_HOPS[addr_type][: int(ecmp_num)],
             protocol=protocol,
         )
         assert result is True, "Testcase {} : Failed \n Error: {}".format(

tests/topotests/bgp-ecmp-topo2/test_ibgp_ecmp_topo2.py

@@ -325,6 +325,7 @@ def test_modify_ecmp_max_paths(request, ecmp_num, test_type):
 
     write_test_footer(tc_name)
 
+
 @pytest.mark.parametrize("ecmp_num", ["8", "16", "32"])
 @pytest.mark.parametrize("test_type", ["redist_static", "advertise_nw"])
 def test_ecmp_after_clear_bgp(request, ecmp_num, test_type):
@@ -350,7 +351,7 @@ def test_ecmp_after_clear_bgp(request, ecmp_num, test_type):
             addr_type,
             dut,
             input_dict_1,
-            next_hop=NEXT_HOPS[addr_type][:int(ecmp_num)],
+            next_hop=NEXT_HOPS[addr_type][: int(ecmp_num)],
             protocol=protocol,
         )
         assert result is True, "Testcase {} : Failed \n Error: {}".format(
@@ -373,7 +374,7 @@ def test_ecmp_after_clear_bgp(request, ecmp_num, test_type):
             addr_type,
             dut,
             input_dict_1,
-            next_hop=NEXT_HOPS[addr_type][:int(ecmp_num)],
+            next_hop=NEXT_HOPS[addr_type][: int(ecmp_num)],
             protocol=protocol,
         )
         assert result is True, "Testcase {} : Failed \n Error: {}".format(

tests/topotests/bgp-evpn-mh/test_evpn_mh.py

@@ -603,6 +603,7 @@ def ping_anycast_gw(tgen):
     local_host.run(cmd_str)
     remote_host.run(cmd_str)
 
+
 def check_mac(dut, vni, mac, m_type, esi, intf, ping_gw=False, tgen=None):
     """
     checks if mac is present and if desination matches the one provided

tests/topotests/bgp-evpn-vxlan_topo1/test_bgp_evpn_vxlan.py

@@ -47,6 +47,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.bgpd, pytest.mark.ospfd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/bgp-snmp-mplsl3vpn/test_bgp_snmp_mplsvpn.py

@@ -47,6 +47,8 @@ from lib.snmptest import SnmpTester
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bgpd, pytest.mark.isisd, pytest.mark.snmp]
+
 
 class TemplateTopo(Topo):
     "Test topology builder"
@@ -266,7 +268,7 @@ def test_pe1_converge_evpn():
             break
         count += 1
         sleep(1)
-    #tgen.mininet_cli()
+    # tgen.mininet_cli()
     assertmsg = "BGP Peer 10.4.4.4 did not connect"
     assert passed, assertmsg
 
@@ -503,8 +505,10 @@ def test_r1_mplsvpn_VrfTable():
     associated_int = r1_snmp.get(
         "mplsL3VpnVrfAssociatedInterfaces.{}".format(snmp_str_to_oid("VRF-a"))
     )
-    assertmsg = "mplsL3VpnVrfAssociatedInterfaces incorrect should be 3 value {}".format(
-        associated_int
+    assertmsg = (
+        "mplsL3VpnVrfAssociatedInterfaces incorrect should be 3 value {}".format(
+            associated_int
+        )
     )
 
     assert associated_int == "3", assertmsg
@@ -620,7 +624,7 @@ rte_table_test = {
         "unknown(0)",
         "ipv4(1)",
         "unknown(0)",
-   ],
+    ],
     "mplsL3VpnVrfRteInetCidrNextHop": [
         "C0 A8 64 0A",
         "C0 A8 C8 0A",
@@ -649,7 +653,15 @@ rte_table_test = {
         "bgp(14)",
         "local(2)",
     ],
-    "mplsL3VpnVrfRteInetCidrNextHopAS": ["65001", "65001", "0", "65001", "0", "65001", "0"],
+    "mplsL3VpnVrfRteInetCidrNextHopAS": [
+        "65001",
+        "65001",
+        "0",
+        "65001",
+        "0",
+        "65001",
+        "0",
+    ],
     "mplsL3VpnVrfRteInetCidrMetric1": ["0", "0", "20", "0", "0", "0", "0"],
     "mplsL3VpnVrfRteInetCidrMetric2": ["-1", "-1", "-1", "-1", "-1", "-1", "-1"],
     "mplsL3VpnVrfRteInetCidrMetric3": ["-1", "-1", "-1", "-1", "-1", "-1", "-1"],
@@ -663,7 +675,7 @@ rte_table_test = {
         "active(1)",
         "active(1)",
         "active(1)",
-       "active(1)",
+        "active(1)",
     ],
 }
 

tests/topotests/bgp_aggregate-address_origin/test_bgp_aggregate-address_origin.py

@@ -47,6 +47,8 @@ from lib.topogen import Topogen, TopoRouter, get_topogen
 from lib.topolog import logger
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bgpd]
+
 
 class TemplateTopo(Topo):
     def build(self, *_args, **_opts):

tests/topotests/bgp_aggregate-address_route-map/test_bgp_aggregate-address_route-map.py

@@ -50,6 +50,8 @@ from lib.topogen import Topogen, TopoRouter, get_topogen
 from lib.topolog import logger
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bgpd]
+
 
 class TemplateTopo(Topo):
     def build(self, *_args, **_opts):

tests/topotests/bgp_as_allow_in/test_bgp_as_allow_in.py

@@ -76,6 +76,9 @@ from lib.bgp import (
 )
 from lib.topojson import build_topo_from_json, build_config_from_json
 
+pytestmark = [pytest.mark.bgpd, pytest.mark.staticd]
+
+
 # Reading the data from JSON File for topology creation
 jsonFile = "{}/bgp_as_allow_in.json".format(CWD)
 try:

tests/topotests/bgp_as_wide_bgp_identifier/test_bgp_as_wide_bgp_identifier.py

@@ -45,6 +45,8 @@ from lib.topogen import Topogen, TopoRouter, get_topogen
 from lib.topolog import logger
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bgpd]
+
 
 class TemplateTopo(Topo):
     def build(self, *_args, **_opts):

tests/topotests/bgp_blackhole_community/test_bgp_blackhole_community.py

@@ -40,6 +40,8 @@ from lib.topolog import logger
 from mininet.topo import Topo
 from lib.common_config import step
 
+pytestmark = [pytest.mark.bgpd]
+
 
 class TemplateTopo(Topo):
     def build(self, *_args, **_opts):

tests/topotests/bgp_comm-list_delete/test_bgp_comm-list_delete.py

@@ -45,6 +45,8 @@ from lib.topogen import Topogen, TopoRouter, get_topogen
 from lib.topolog import logger
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bgpd]
+
 
 class TemplateTopo(Topo):
     def build(self, *_args, **_opts):

tests/topotests/bgp_communities_topo1/test_bgp_communities.py

@@ -66,6 +66,9 @@ from lib.bgp import (
 from lib.topojson import build_topo_from_json, build_config_from_json
 from copy import deepcopy
 
+pytestmark = [pytest.mark.bgpd, pytest.mark.staticd]
+
+
 # Reading the data from JSON File for topology creation
 jsonFile = "{}/bgp_communities.json".format(CWD)
 try:

tests/topotests/bgp_communities_topo1/test_bgp_communities_topo2.py

@@ -70,6 +70,9 @@ from lib.bgp import (
 from lib.topojson import build_topo_from_json, build_config_from_json
 from copy import deepcopy
 
+pytestmark = [pytest.mark.bgpd, pytest.mark.staticd]
+
+
 # Reading the data from JSON File for topology creation
 jsonFile = "{}/bgp_communities_topo2.json".format(CWD)
 try:

tests/topotests/bgp_community_change_update/test_bgp_community_change_update.py

@@ -59,6 +59,8 @@ from mininet.topo import Topo
 from lib.common_config import step
 from time import sleep
 
+pytestmark = [pytest.mark.bgpd, pytest.mark.bgpd]
+
 
 class TemplateTopo(Topo):
     def build(self, *_args, **_opts):

tests/topotests/bgp_features/peer1/exa_readpipe.py

@@ -8,7 +8,7 @@ if len(sys.argv) != 2:
 fifo = sys.argv[1]
 
 while True:
-    pipe = open(fifo, 'r')
+    pipe = open(fifo, "r")
     with pipe:
         line = pipe.readline().strip()
         if line != "":

tests/topotests/bgp_features/peer2/exa_readpipe.py

@@ -8,7 +8,7 @@ if len(sys.argv) != 2:
 fifo = sys.argv[1]
 
 while True:
-    pipe = open(fifo, 'r')
+    pipe = open(fifo, "r")
     with pipe:
         line = pipe.readline().strip()
         if line != "":

tests/topotests/bgp_features/peer3/exa_readpipe.py

@@ -8,7 +8,7 @@ if len(sys.argv) != 2:
 fifo = sys.argv[1]
 
 while True:
-    pipe = open(fifo, 'r')
+    pipe = open(fifo, "r")
     with pipe:
         line = pipe.readline().strip()
         if line != "":

tests/topotests/bgp_features/peer4/exa_readpipe.py

@@ -8,7 +8,7 @@ if len(sys.argv) != 2:
 fifo = sys.argv[1]
 
 while True:
-    pipe = open(fifo, 'r')
+    pipe = open(fifo, "r")
     with pipe:
         line = pipe.readline().strip()
         if line != "":

tests/topotests/bgp_l3vpn_to_bgp_direct/test_bgp_l3vpn_to_bgp_direct.py

@@ -31,6 +31,7 @@ from lib.ltemplate import *
 
 pytestmark = [pytest.mark.bgpd, pytest.mark.ospfd]
 
+
 def test_adjacencies():
     CliOnFail = None
     # For debugging, uncomment the next line

tests/topotests/bgp_l3vpn_to_bgp_vrf/test_bgp_l3vpn_to_bgp_vrf.py

@@ -31,6 +31,7 @@ from lib.ltemplate import *
 
 pytestmark = [pytest.mark.bgpd, pytest.mark.ospfd]
 
+
 def test_check_linux_vrf():
     CliOnFail = None
     # For debugging, uncomment the next line

tests/topotests/bgp_listen_on_multiple_addresses/test_bgp_listen_on_multiple_addresses.py

@@ -142,7 +142,7 @@ def _bgp_converge_initial(router_name, peer_address, timeout=180):
     """
     Waits for the BGP connection between a given router and a given peer
     (specified by its IP address) to be established. If the connection is
-    not established within a given timeout, then an exception is raised. 
+    not established within a given timeout, then an exception is raised.
     """
     tgen = get_topogen()
     router = tgen.routers()[router_name]

tests/topotests/bgp_lu_topo1/test_bgp_lu.py

@@ -45,17 +45,18 @@ from lib.topolog import logger
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
-#Basic scenario for BGP-LU. Nodes are directly connected.
-#Node 3 is advertising many routes to 2, which advertises them
-#as BGP-LU to 1; this way we get routes with actual labels, as
-#opposed to implicit-null routes in the 2-node case.
+# Basic scenario for BGP-LU. Nodes are directly connected.
+# Node 3 is advertising many routes to 2, which advertises them
+# as BGP-LU to 1; this way we get routes with actual labels, as
+# opposed to implicit-null routes in the 2-node case.
 #
 #  AS1      BGP-LU        AS2         iBGP        AS2
-#+-----+                +-----+                 +-----+
-#|     |.1            .2|     |.2             .3|     |
-#|  1  +----------------+  2  +-----------------+  3  |
-#|     |   10.0.0.0/24  |     |   10.0.1.0/24   |     |
-#+-----+                +-----+                 +-----+
+# +-----+                +-----+                 +-----+
+# |     |.1            .2|     |.2             .3|     |
+# |  1  +----------------+  2  +-----------------+  3  |
+# |     |   10.0.0.0/24  |     |   10.0.1.0/24   |     |
+# +-----+                +-----+                 +-----+
+
 
 class TemplateTopo(Topo):
     "Test topology builder"
@@ -84,7 +85,6 @@ class TemplateTopo(Topo):
         switch.add_link(tgen.gears["R3"])
 
 
-
 def setup_module(mod):
     "Sets up the pytest environment"
     # This function initiates the topology build with Topogen...
@@ -115,15 +115,19 @@ def teardown_module(mod):
     # This function tears down the whole topology.
     tgen.stop_topology()
 
+
 def check_labelpool(router):
     json_file = "{}/{}/labelpool.summ.json".format(CWD, router.name)
     expected = json.loads(open(json_file).read())
 
-    test_func = partial(topotest.router_json_cmp, router, "show bgp labelpool summary json", expected)
+    test_func = partial(
+        topotest.router_json_cmp, router, "show bgp labelpool summary json", expected
+    )
     _, result = topotest.run_and_expect(test_func, None, count=20, wait=1)
     assertmsg = '"{}" JSON output mismatches - Did not converge'.format(router.name)
     assert result is None, assertmsg
-    
+
+
 def test_converge_bgplu():
     "Wait for protocol convergence"
 
@@ -132,13 +136,14 @@ def test_converge_bgplu():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    #tgen.mininet_cli();
+    # tgen.mininet_cli();
     r1 = tgen.gears["R1"]
     r2 = tgen.gears["R2"]
 
     check_labelpool(r1)
     check_labelpool(r2)
 
+
 def test_clear_bgplu():
     "Wait for protocol convergence"
 
@@ -147,7 +152,7 @@ def test_clear_bgplu():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    #tgen.mininet_cli();
+    # tgen.mininet_cli();
     r1 = tgen.gears["R1"]
     r2 = tgen.gears["R2"]
 
@@ -164,6 +169,7 @@ def test_clear_bgplu():
     check_labelpool(r1)
     check_labelpool(r2)
 
+
 def test_memory_leak():
     "Run the memory leak test and report results."
     tgen = get_topogen()

tests/topotests/bgp_rfapi_basic_sanity/test_bgp_rfapi_basic_sanity.py

@@ -31,6 +31,7 @@ from lib.ltemplate import *
 
 pytestmark = [pytest.mark.bgpd, pytest.mark.ospfd]
 
+
 def test_add_routes():
     CliOnFail = None
     # For debugging, uncomment the next line

tests/topotests/example-test/test_template.py

@@ -44,7 +44,7 @@ from lib.topolog import logger
 from mininet.topo import Topo
 
 
-#TODO: select markers based on daemons used during test
+# TODO: select markers based on daemons used during test
 # pytest module level markers
 """
 pytestmark = pytest.mark.bfdd # single marker

tests/topotests/example-topojson-test/test_topo_json_multiple_links/test_example_topojson_multiple_links.py

@@ -54,7 +54,7 @@ from lib.bgp import verify_bgp_convergence
 from lib.topojson import build_topo_from_json, build_config_from_json
 
 
-#TODO: select markers based on daemons used during test
+# TODO: select markers based on daemons used during test
 # pytest module level markers
 """
 pytestmark = pytest.mark.bfdd # single marker

tests/topotests/example-topojson-test/test_topo_json_single_link/test_example_topojson.py

@@ -53,7 +53,7 @@ from lib.bgp import verify_bgp_convergence
 from lib.topojson import build_topo_from_json, build_config_from_json
 
 
-#TODO: select markers based on daemons used during test
+# TODO: select markers based on daemons used during test
 # pytest module level markers
 """
 pytestmark = pytest.mark.bfdd # single marker

tests/topotests/example-topojson-test/test_topo_json_single_link_loopback/test_example_topojson.py

@@ -55,7 +55,7 @@ from lib.bgp import verify_bgp_convergence
 from lib.topojson import build_topo_from_json, build_config_from_json
 
 
-#TODO: select markers based on daemons used during test
+# TODO: select markers based on daemons used during test
 # pytest module level markers
 """
 pytestmark = pytest.mark.bfdd # single marker

tests/topotests/isis-lfa-topo1/test_isis_lfa_topo1.py

@@ -165,6 +165,7 @@ class TemplateTopo(Topo):
                         f_in.close()
                         f_out.close()
 
+
 def setup_module(mod):
     "Sets up the pytest environment"
     tgen = Topogen(TemplateTopo, mod.__name__)

tests/topotests/isis-lsp-bits-topo1/test_isis_lsp_bits_topo1.py

@@ -73,7 +73,7 @@ from functools import partial
 
 # Save the Current Working Directory to find configuration files.
 CWD = os.path.dirname(os.path.realpath(__file__))
-sys.path.append(os.path.join(CWD, '../'))
+sys.path.append(os.path.join(CWD, "../"))
 
 # pylint: disable=C0413
 # Import topogen and topotest helpers
@@ -87,8 +87,10 @@ from mininet.topo import Topo
 # Global multi-dimensional dictionary containing all expected outputs
 outputs = {}
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
+
     def build(self, *_args, **_opts):
         "Build function"
         tgen = get_topogen(self)
@@ -96,36 +98,36 @@ class TemplateTopo(Topo):
         #
         # Define FRR Routers
         #
-        for router in ['rt1', 'rt2', 'rt3', 'rt4', 'rt5', 'rt6']:
+        for router in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
             tgen.add_router(router)
 
         #
         # Define connections
         #
-        switch = tgen.add_switch('s1')
-        switch.add_link(tgen.gears['rt1'], nodeif="eth-sw1")
-        switch.add_link(tgen.gears['rt2'], nodeif="eth-sw1")
-        switch.add_link(tgen.gears['rt3'], nodeif="eth-sw1")
+        switch = tgen.add_switch("s1")
+        switch.add_link(tgen.gears["rt1"], nodeif="eth-sw1")
+        switch.add_link(tgen.gears["rt2"], nodeif="eth-sw1")
+        switch.add_link(tgen.gears["rt3"], nodeif="eth-sw1")
 
-        switch = tgen.add_switch('s2')
-        switch.add_link(tgen.gears['rt2'], nodeif="eth-rt4")
-        switch.add_link(tgen.gears['rt4'], nodeif="eth-rt2")
+        switch = tgen.add_switch("s2")
+        switch.add_link(tgen.gears["rt2"], nodeif="eth-rt4")
+        switch.add_link(tgen.gears["rt4"], nodeif="eth-rt2")
 
-        switch = tgen.add_switch('s4')
-        switch.add_link(tgen.gears['rt3'], nodeif="eth-rt5")
-        switch.add_link(tgen.gears['rt5'], nodeif="eth-rt3")
+        switch = tgen.add_switch("s4")
+        switch.add_link(tgen.gears["rt3"], nodeif="eth-rt5")
+        switch.add_link(tgen.gears["rt5"], nodeif="eth-rt3")
 
-        switch = tgen.add_switch('s6')
-        switch.add_link(tgen.gears['rt4'], nodeif="eth-rt5")
-        switch.add_link(tgen.gears['rt5'], nodeif="eth-rt4")
+        switch = tgen.add_switch("s6")
+        switch.add_link(tgen.gears["rt4"], nodeif="eth-rt5")
+        switch.add_link(tgen.gears["rt5"], nodeif="eth-rt4")
 
-        switch = tgen.add_switch('s7')
-        switch.add_link(tgen.gears['rt4'], nodeif="eth-rt6")
-        switch.add_link(tgen.gears['rt6'], nodeif="eth-rt4")
+        switch = tgen.add_switch("s7")
+        switch.add_link(tgen.gears["rt4"], nodeif="eth-rt6")
+        switch.add_link(tgen.gears["rt6"], nodeif="eth-rt4")
 
-        switch = tgen.add_switch('s8')
-        switch.add_link(tgen.gears['rt5'], nodeif="eth-rt6")
-        switch.add_link(tgen.gears['rt6'], nodeif="eth-rt5")
+        switch = tgen.add_switch("s8")
+        switch.add_link(tgen.gears["rt5"], nodeif="eth-rt6")
+        switch.add_link(tgen.gears["rt6"], nodeif="eth-rt5")
 
 
 def setup_module(mod):
@@ -138,16 +140,15 @@ def setup_module(mod):
     # For all registered routers, load the zebra configuration file
     for rname, router in router_list.items():
         router.load_config(
-            TopoRouter.RD_ZEBRA,
-            os.path.join(CWD, '{}/zebra.conf'.format(rname))
+            TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
         )
         router.load_config(
-            TopoRouter.RD_ISIS,
-            os.path.join(CWD, '{}/isisd.conf'.format(rname))
+            TopoRouter.RD_ISIS, os.path.join(CWD, "{}/isisd.conf".format(rname))
         )
 
     tgen.start_router()
 
+
 def teardown_module(mod):
     "Teardown the pytest environment"
     tgen = get_topogen()
@@ -155,6 +156,7 @@ def teardown_module(mod):
     # This function tears down the whole topology.
     tgen.stop_topology()
 
+
 def router_compare_json_output(rname, command, reference):
     "Compare router JSON output"
 
@@ -170,6 +172,7 @@ def router_compare_json_output(rname, command, reference):
     assertmsg = '"{}" JSON output mismatches the expected result'.format(rname)
     assert diff is None, assertmsg
 
+
 #
 # Step 1
 #
@@ -184,13 +187,14 @@ def test_isis_adjacencies_step1():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    for rname in ['rt1', 'rt2', 'rt3', 'rt4', 'rt5', 'rt6']:
+    for rname in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
         router_compare_json_output(
-            rname, 
+            rname,
             "show yang operational-data /frr-interface:lib isisd",
             "step1/show_yang_interface_isis_adjacencies.ref",
         )
 
+
 def test_rib_ipv4_step1():
     logger.info("Test (step 1): verify IPv4 RIB")
     tgen = get_topogen()
@@ -199,11 +203,12 @@ def test_rib_ipv4_step1():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    for rname in ['rt1', 'rt2', 'rt3', 'rt4', 'rt5', 'rt6']:
+    for rname in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
         router_compare_json_output(
             rname, "show ip route isis json", "step1/show_ip_route.ref"
         )
 
+
 def test_rib_ipv6_step1():
     logger.info("Test (step 1): verify IPv6 RIB")
     tgen = get_topogen()
@@ -212,11 +217,12 @@ def test_rib_ipv6_step1():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    for rname in ['rt1', 'rt2', 'rt3', 'rt4', 'rt5', 'rt6']:
+    for rname in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
         router_compare_json_output(
             rname, "show ipv6 route isis json", "step1/show_ipv6_route.ref"
         )
 
+
 #
 # Step 2
 #
@@ -235,15 +241,20 @@ def test_rib_ipv4_step2():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    logger.info('Disabling setting the attached-bit on RT2 and RT4')
-    tgen.net['rt2'].cmd('vtysh -c "conf t" -c "router isis 1" -c "no attached-bit send"')
-    tgen.net['rt4'].cmd('vtysh -c "conf t" -c "router isis 1" -c "no attached-bit send"')
+    logger.info("Disabling setting the attached-bit on RT2 and RT4")
+    tgen.net["rt2"].cmd(
+        'vtysh -c "conf t" -c "router isis 1" -c "no attached-bit send"'
+    )
+    tgen.net["rt4"].cmd(
+        'vtysh -c "conf t" -c "router isis 1" -c "no attached-bit send"'
+    )
 
-    for rname in ['rt1', 'rt6']:
+    for rname in ["rt1", "rt6"]:
         router_compare_json_output(
             rname, "show ip route isis json", "step2/show_ip_route.ref"
         )
 
+
 def test_rib_ipv6_step2():
     logger.info("Test (step 2): verify IPv6 RIB")
     tgen = get_topogen()
@@ -252,11 +263,12 @@ def test_rib_ipv6_step2():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    for rname in ['rt1', 'rt6']:
+    for rname in ["rt1", "rt6"]:
         router_compare_json_output(
             rname, "show ipv6 route isis json", "step2/show_ipv6_route.ref"
         )
 
+
 #
 # Step 3
 #
@@ -265,7 +277,7 @@ def test_rib_ipv6_step2():
 # -disble processing a LSP with attach bit set
 #
 # Expected changes:
-# -RT1 and RT6 should not install a default route 
+# -RT1 and RT6 should not install a default route
 #
 def test_rib_ipv4_step3():
     logger.info("Test (step 3): verify IPv4 RIB")
@@ -275,19 +287,24 @@ def test_rib_ipv4_step3():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    logger.info('Enable setting the attached-bit on RT2 and RT4')
-    tgen.net['rt2'].cmd('vtysh -c "conf t" -c "router isis 1" -c "attached-bit send"')
-    tgen.net['rt4'].cmd('vtysh -c "conf t" -c "router isis 1" -c "attached-bit send"')
+    logger.info("Enable setting the attached-bit on RT2 and RT4")
+    tgen.net["rt2"].cmd('vtysh -c "conf t" -c "router isis 1" -c "attached-bit send"')
+    tgen.net["rt4"].cmd('vtysh -c "conf t" -c "router isis 1" -c "attached-bit send"')
 
-    logger.info('Disable processing received attached-bit in LSP on RT1 and RT6')
-    tgen.net['rt1'].cmd('vtysh -c "conf t" -c "router isis 1" -c "attached-bit receive ignore"')
-    tgen.net['rt6'].cmd('vtysh -c "conf t" -c "router isis 1" -c "attached-bit receive ignore"')
+    logger.info("Disable processing received attached-bit in LSP on RT1 and RT6")
+    tgen.net["rt1"].cmd(
+        'vtysh -c "conf t" -c "router isis 1" -c "attached-bit receive ignore"'
+    )
+    tgen.net["rt6"].cmd(
+        'vtysh -c "conf t" -c "router isis 1" -c "attached-bit receive ignore"'
+    )
 
-    for rname in ['rt1', 'rt6']:
+    for rname in ["rt1", "rt6"]:
         router_compare_json_output(
             rname, "show ip route isis json", "step3/show_ip_route.ref"
         )
 
+
 def test_rib_ipv6_step3():
     logger.info("Test (step 3): verify IPv6 RIB")
     tgen = get_topogen()
@@ -296,11 +313,12 @@ def test_rib_ipv6_step3():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    for rname in ['rt1', 'rt6']:
+    for rname in ["rt1", "rt6"]:
         router_compare_json_output(
             rname, "show ipv6 route isis json", "step3/show_ipv6_route.ref"
         )
 
+
 #
 # Step 4
 #
@@ -319,13 +337,21 @@ def test_rib_ipv4_step4():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    logger.info('restore default processing on received attached-bit in LSP on RT1 and RT6')
-    tgen.net['rt1'].cmd('vtysh -c "conf t" -c "router isis 1" -c "no attached-bit receive ignore"')
-    tgen.net['rt6'].cmd('vtysh -c "conf t" -c "router isis 1" -c "no attached-bit receive ignore"')
+    logger.info(
+        "restore default processing on received attached-bit in LSP on RT1 and RT6"
+    )
+    tgen.net["rt1"].cmd(
+        'vtysh -c "conf t" -c "router isis 1" -c "no attached-bit receive ignore"'
+    )
+    tgen.net["rt6"].cmd(
+        'vtysh -c "conf t" -c "router isis 1" -c "no attached-bit receive ignore"'
+    )
 
-    for rname in ['rt1', 'rt6']:
+    for rname in ["rt1", "rt6"]:
         router_compare_json_output(
-            rname, "show ip route isis json", "step4/show_ip_route.ref")
+            rname, "show ip route isis json", "step4/show_ip_route.ref"
+        )
+
 
 def test_rib_ipv6_step4():
     logger.info("Test (step 4): verify IPv6 RIB")
@@ -335,19 +361,22 @@ def test_rib_ipv6_step4():
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-    for rname in ['rt1', 'rt6']:
+    for rname in ["rt1", "rt6"]:
         router_compare_json_output(
-            rname, "show ipv6 route isis json", "step4/show_ipv6_route.ref")
+            rname, "show ipv6 route isis json", "step4/show_ipv6_route.ref"
+        )
+
 
 # Memory leak test template
 def test_memory_leak():
     "Run the memory leak test and report results."
     tgen = get_topogen()
     if not tgen.is_memleak_enabled():
-        pytest.skip('Memory leak test/report is disabled')
+        pytest.skip("Memory leak test/report is disabled")
 
     tgen.report_memory_leaks()
 
-if __name__ == '__main__':
+
+if __name__ == "__main__":
     args = ["-s"] + sys.argv[1:]
     sys.exit(pytest.main(args))

tests/topotests/isis-rlfa-topo1/test_isis_rlfa_topo1.py

@@ -167,6 +167,7 @@ class TemplateTopo(Topo):
                         f_in.close()
                         f_out.close()
 
+
 def setup_module(mod):
     "Sets up the pytest environment"
     tgen = Topogen(TemplateTopo, mod.__name__)

tests/topotests/isis-sr-te-topo1/test_isis_sr_te_topo1.py

@@ -85,7 +85,7 @@ from functools import partial
 
 # Save the Current Working Directory to find configuration files.
 CWD = os.path.dirname(os.path.realpath(__file__))
-sys.path.append(os.path.join(CWD, '../'))
+sys.path.append(os.path.join(CWD, "../"))
 
 # pylint: disable=C0413
 # Import topogen and topotest helpers
@@ -101,6 +101,7 @@ pytestmark = [pytest.mark.bgpd, pytest.mark.isisd, pytest.mark.pathd]
 
 class TemplateTopo(Topo):
     "Test topology builder"
+
     def build(self, *_args, **_opts):
         "Build function"
         tgen = get_topogen(self)
@@ -108,48 +109,49 @@ class TemplateTopo(Topo):
         #
         # Define FRR Routers
         #
-        for router in ['rt1', 'rt2', 'rt3', 'rt4', 'rt5', 'rt6', 'dst']:
+        for router in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6", "dst"]:
             tgen.add_router(router)
 
         #
         # Define connections
         #
-        switch = tgen.add_switch('s1')
-        switch.add_link(tgen.gears['rt1'], nodeif="eth-sw1")
-        switch.add_link(tgen.gears['rt2'], nodeif="eth-sw1")
-        switch.add_link(tgen.gears['rt3'], nodeif="eth-sw1")
+        switch = tgen.add_switch("s1")
+        switch.add_link(tgen.gears["rt1"], nodeif="eth-sw1")
+        switch.add_link(tgen.gears["rt2"], nodeif="eth-sw1")
+        switch.add_link(tgen.gears["rt3"], nodeif="eth-sw1")
 
-        switch = tgen.add_switch('s2')
-        switch.add_link(tgen.gears['rt2'], nodeif="eth-rt4-1")
-        switch.add_link(tgen.gears['rt4'], nodeif="eth-rt2-1")
+        switch = tgen.add_switch("s2")
+        switch.add_link(tgen.gears["rt2"], nodeif="eth-rt4-1")
+        switch.add_link(tgen.gears["rt4"], nodeif="eth-rt2-1")
 
-        switch = tgen.add_switch('s3')
-        switch.add_link(tgen.gears['rt2'], nodeif="eth-rt4-2")
-        switch.add_link(tgen.gears['rt4'], nodeif="eth-rt2-2")
+        switch = tgen.add_switch("s3")
+        switch.add_link(tgen.gears["rt2"], nodeif="eth-rt4-2")
+        switch.add_link(tgen.gears["rt4"], nodeif="eth-rt2-2")
 
-        switch = tgen.add_switch('s4')
-        switch.add_link(tgen.gears['rt3'], nodeif="eth-rt5-1")
-        switch.add_link(tgen.gears['rt5'], nodeif="eth-rt3-1")
+        switch = tgen.add_switch("s4")
+        switch.add_link(tgen.gears["rt3"], nodeif="eth-rt5-1")
+        switch.add_link(tgen.gears["rt5"], nodeif="eth-rt3-1")
 
-        switch = tgen.add_switch('s5')
-        switch.add_link(tgen.gears['rt3'], nodeif="eth-rt5-2")
-        switch.add_link(tgen.gears['rt5'], nodeif="eth-rt3-2")
+        switch = tgen.add_switch("s5")
+        switch.add_link(tgen.gears["rt3"], nodeif="eth-rt5-2")
+        switch.add_link(tgen.gears["rt5"], nodeif="eth-rt3-2")
 
-        switch = tgen.add_switch('s6')
-        switch.add_link(tgen.gears['rt4'], nodeif="eth-rt5")
-        switch.add_link(tgen.gears['rt5'], nodeif="eth-rt4")
+        switch = tgen.add_switch("s6")
+        switch.add_link(tgen.gears["rt4"], nodeif="eth-rt5")
+        switch.add_link(tgen.gears["rt5"], nodeif="eth-rt4")
 
-        switch = tgen.add_switch('s7')
-        switch.add_link(tgen.gears['rt4'], nodeif="eth-rt6")
-        switch.add_link(tgen.gears['rt6'], nodeif="eth-rt4")
+        switch = tgen.add_switch("s7")
+        switch.add_link(tgen.gears["rt4"], nodeif="eth-rt6")
+        switch.add_link(tgen.gears["rt6"], nodeif="eth-rt4")
 
-        switch = tgen.add_switch('s8')
-        switch.add_link(tgen.gears['rt5'], nodeif="eth-rt6")
-        switch.add_link(tgen.gears['rt6'], nodeif="eth-rt5")
+        switch = tgen.add_switch("s8")
+        switch.add_link(tgen.gears["rt5"], nodeif="eth-rt6")
+        switch.add_link(tgen.gears["rt6"], nodeif="eth-rt5")
+
+        switch = tgen.add_switch("s9")
+        switch.add_link(tgen.gears["rt6"], nodeif="eth-dst")
+        switch.add_link(tgen.gears["dst"], nodeif="eth-rt6")
 
-        switch = tgen.add_switch('s9')
-        switch.add_link(tgen.gears['rt6'], nodeif="eth-dst")
-        switch.add_link(tgen.gears['dst'], nodeif="eth-rt6")
 
 def setup_module(mod):
     "Sets up the pytest environment"
@@ -167,24 +169,21 @@ def setup_module(mod):
     # For all registered routers, load the zebra configuration file
     for rname, router in router_list.iteritems():
         router.load_config(
-            TopoRouter.RD_ZEBRA,
-            os.path.join(CWD, '{}/zebra.conf'.format(rname))
+            TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
         )
         router.load_config(
-            TopoRouter.RD_ISIS,
-            os.path.join(CWD, '{}/isisd.conf'.format(rname))
+            TopoRouter.RD_ISIS, os.path.join(CWD, "{}/isisd.conf".format(rname))
         )
         router.load_config(
-            TopoRouter.RD_PATH,
-            os.path.join(CWD, '{}/pathd.conf'.format(rname))
+            TopoRouter.RD_PATH, os.path.join(CWD, "{}/pathd.conf".format(rname))
         )
         router.load_config(
-            TopoRouter.RD_BGP,
-            os.path.join(CWD, '{}/bgpd.conf'.format(rname))
+            TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
         )
 
     tgen.start_router()
 
+
 def teardown_module(mod):
     "Teardown the pytest environment"
     tgen = get_topogen()
@@ -192,6 +191,7 @@ def teardown_module(mod):
     # This function tears down the whole topology.
     tgen.stop_topology()
 
+
 def setup_testcase(msg):
     logger.info(msg)
     tgen = get_topogen()
@@ -202,9 +202,11 @@ def setup_testcase(msg):
 
     return tgen
 
+
 def print_cmd_result(rname, command):
     print(get_topogen().gears[rname].vtysh_cmd(command, isjson=False))
 
+
 def compare_json_test(router, command, reference, exact):
     output = router.vtysh_cmd(command, isjson=True)
     result = topotest.json_cmp(output, reference)
@@ -212,9 +214,10 @@ def compare_json_test(router, command, reference, exact):
     # Note: topotest.json_cmp() just checks on inclusion of keys.
     # For exact matching also compare the other way around.
     if not result and exact:
-       return topotest.json_cmp(reference, output)
+        return topotest.json_cmp(reference, output)
     else:
-       return result
+        return result
+
 
 def cmp_json_output(rname, command, reference, exact=False):
     "Compare router JSON output"
@@ -222,78 +225,136 @@ def cmp_json_output(rname, command, reference, exact=False):
     logger.info('Comparing router "%s" "%s" output', rname, command)
 
     tgen = get_topogen()
-    filename = '{}/{}/{}'.format(CWD, rname, reference)
+    filename = "{}/{}/{}".format(CWD, rname, reference)
     expected = json.loads(open(filename).read())
 
     # Run test function until we get an result. Wait at most 60 seconds.
-    test_func = partial(compare_json_test,
-        tgen.gears[rname], command, expected, exact)
+    test_func = partial(compare_json_test, tgen.gears[rname], command, expected, exact)
     _, diff = topotest.run_and_expect(test_func, None, count=120, wait=0.5)
     assertmsg = '"{}" JSON output mismatches the expected result'.format(rname)
     assert diff is None, assertmsg
 
+
 def cmp_json_output_exact(rname, command, reference):
     return cmp_json_output(rname, command, reference, True)
 
-def add_candidate_path(rname, endpoint, pref, name, segment_list='default'):
-    get_topogen().net[rname].cmd(''' \
+
+def add_candidate_path(rname, endpoint, pref, name, segment_list="default"):
+    get_topogen().net[rname].cmd(
+        """ \
         vtysh -c "conf t" \
               -c "segment-routing" \
               -c "traffic-eng" \
-              -c "policy color 1 endpoint ''' + endpoint + '''" \
-              -c "candidate-path preference ''' + str(pref) + ''' name ''' + name + ''' explicit segment-list ''' + segment_list + '''"''')
+              -c "policy color 1 endpoint """
+        + endpoint
+        + """" \
+              -c "candidate-path preference """
+        + str(pref)
+        + """ name """
+        + name
+        + """ explicit segment-list """
+        + segment_list
+        + '''"'''
+    )
+
 
 def delete_candidate_path(rname, endpoint, pref):
-    get_topogen().net[rname].cmd(''' \
+    get_topogen().net[rname].cmd(
+        """ \
         vtysh -c "conf t" \
               -c "segment-routing" \
               -c "traffic-eng" \
-              -c "policy color 1 endpoint ''' + endpoint + '''" \
-              -c "no candidate-path preference ''' + str(pref) + '''"''')
+              -c "policy color 1 endpoint """
+        + endpoint
+        + """" \
+              -c "no candidate-path preference """
+        + str(pref)
+        + '''"'''
+    )
+
 
 def add_segment(rname, name, index, label):
-    get_topogen().net[rname].cmd(''' \
+    get_topogen().net[rname].cmd(
+        """ \
         vtysh -c "conf t" \
               -c "segment-routing" \
               -c "traffic-eng" \
-              -c "segment-list ''' + name + '''" \
-              -c "index ''' + str(index) + ''' mpls label ''' + str(label) + '''"''')
+              -c "segment-list """
+        + name
+        + """" \
+              -c "index """
+        + str(index)
+        + """ mpls label """
+        + str(label)
+        + '''"'''
+    )
+
 
 def delete_segment(rname, name, index):
-    get_topogen().net[rname].cmd(''' \
+    get_topogen().net[rname].cmd(
+        """ \
         vtysh -c "conf t" \
               -c "segment-routing" \
               -c "traffic-eng" \
-              -c "segment-list ''' + name + '''" \
-              -c "no index ''' + str(index) + '''"''')
+              -c "segment-list """
+        + name
+        + """" \
+              -c "no index """
+        + str(index)
+        + '''"'''
+    )
+
 
 def create_sr_policy(rname, endpoint, bsid):
-    get_topogen().net[rname].cmd(''' \
+    get_topogen().net[rname].cmd(
+        """ \
         vtysh -c "conf t" \
               -c "segment-routing" \
               -c "traffic-eng" \
-              -c "policy color 1 endpoint ''' + endpoint + '''" \
+              -c "policy color 1 endpoint """
+        + endpoint
+        + """" \
               -c "name default" \
-              -c "binding-sid ''' + str(bsid) + '''"''')
+              -c "binding-sid """
+        + str(bsid)
+        + '''"'''
+    )
+
 
 def delete_sr_policy(rname, endpoint):
-    get_topogen().net[rname].cmd(''' \
+    get_topogen().net[rname].cmd(
+        """ \
         vtysh -c "conf t" \
               -c "segment-routing" \
               -c "traffic-eng" \
-              -c "no policy color 1 endpoint ''' + endpoint + '''"''')
+              -c "no policy color 1 endpoint """
+        + endpoint
+        + '''"'''
+    )
+
 
 def create_prefix_sid(rname, prefix, sid):
-    get_topogen().net[rname].cmd(''' \
+    get_topogen().net[rname].cmd(
+        """ \
         vtysh -c "conf t" \
               -c "router isis 1" \
-              -c "segment-routing prefix ''' + prefix + " index " + str(sid) + '''"''')
+              -c "segment-routing prefix """
+        + prefix
+        + " index "
+        + str(sid)
+        + '''"'''
+    )
+
 
 def delete_prefix_sid(rname, prefix):
-    get_topogen().net[rname].cmd(''' \
+    get_topogen().net[rname].cmd(
+        ''' \
         vtysh -c "conf t" \
               -c "router isis 1" \
-              -c "no segment-routing prefix "''' + prefix)
+              -c "no segment-routing prefix "'''
+        + prefix
+    )
+
 
 #
 # Step 1
@@ -303,37 +364,42 @@ def delete_prefix_sid(rname, prefix):
 def test_srte_init_step1():
     setup_testcase("Test (step 1): wait for IS-IS convergence / label distribution")
 
-    for rname in ['rt1', 'rt6']:
-        cmp_json_output(rname,
-                        "show mpls table json",
-                        "step1/show_mpls_table_without_candidate.ref")
+    for rname in ["rt1", "rt6"]:
+        cmp_json_output(
+            rname, "show mpls table json", "step1/show_mpls_table_without_candidate.ref"
+        )
+
 
 def test_srte_add_candidate_check_mpls_table_step1():
     setup_testcase("Test (step 1): check MPLS table regarding the added Candidate Path")
 
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        add_candidate_path(rname, endpoint, 100, 'default')
-        cmp_json_output(rname,
-                        "show mpls table json",
-                        "step1/show_mpls_table_with_candidate.ref")
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        add_candidate_path(rname, endpoint, 100, "default")
+        cmp_json_output(
+            rname, "show mpls table json", "step1/show_mpls_table_with_candidate.ref"
+        )
         delete_candidate_path(rname, endpoint, 100)
 
+
 def test_srte_reinstall_sr_policy_check_mpls_table_step1():
-    setup_testcase("Test (step 1): check MPLS table after the SR Policy was removed and reinstalled")
+    setup_testcase(
+        "Test (step 1): check MPLS table after the SR Policy was removed and reinstalled"
+    )
 
-    for rname, endpoint, bsid in [('rt1', '6.6.6.6', 1111), ('rt6', '1.1.1.1', 6666)]:
-        add_candidate_path(rname, endpoint, 100, 'default')
+    for rname, endpoint, bsid in [("rt1", "6.6.6.6", 1111), ("rt6", "1.1.1.1", 6666)]:
+        add_candidate_path(rname, endpoint, 100, "default")
         delete_sr_policy(rname, endpoint)
-        cmp_json_output(rname,
-                        "show mpls table json",
-                        "step1/show_mpls_table_without_candidate.ref")
+        cmp_json_output(
+            rname, "show mpls table json", "step1/show_mpls_table_without_candidate.ref"
+        )
         create_sr_policy(rname, endpoint, bsid)
-        add_candidate_path(rname, endpoint, 100, 'default')
-        cmp_json_output(rname,
-                        "show mpls table json",
-                        "step1/show_mpls_table_with_candidate.ref")
+        add_candidate_path(rname, endpoint, 100, "default")
+        cmp_json_output(
+            rname, "show mpls table json", "step1/show_mpls_table_with_candidate.ref"
+        )
         delete_candidate_path(rname, endpoint, 100)
 
+
 #
 # Step 2
 #
@@ -342,28 +408,41 @@ def test_srte_reinstall_sr_policy_check_mpls_table_step1():
 def test_srte_bare_policy_step2():
     setup_testcase("Test (step 2): bare SR Policy should not be operational")
 
-    for rname in ['rt1', 'rt6']:
-        cmp_json_output_exact(rname,
-                              "show yang operational-data /frr-pathd:pathd pathd",
-                              "step2/show_operational_data.ref")
+    for rname in ["rt1", "rt6"]:
+        cmp_json_output_exact(
+            rname,
+            "show yang operational-data /frr-pathd:pathd pathd",
+            "step2/show_operational_data.ref",
+        )
+
 
 def test_srte_add_candidate_check_operational_data_step2():
-    setup_testcase("Test (step 2): add single Candidate Path, SR Policy should be operational")
+    setup_testcase(
+        "Test (step 2): add single Candidate Path, SR Policy should be operational"
+    )
+
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        add_candidate_path(rname, endpoint, 100, "default")
+        cmp_json_output(
+            rname,
+            "show yang operational-data /frr-pathd:pathd pathd",
+            "step2/show_operational_data_with_candidate.ref",
+        )
 
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        add_candidate_path(rname, endpoint, 100, 'default')
-        cmp_json_output(rname,
-                        "show yang operational-data /frr-pathd:pathd pathd",
-                        "step2/show_operational_data_with_candidate.ref")
 
 def test_srte_config_remove_candidate_check_operational_data_step2():
-    setup_testcase("Test (step 2): remove single Candidate Path, SR Policy should not be operational anymore")
+    setup_testcase(
+        "Test (step 2): remove single Candidate Path, SR Policy should not be operational anymore"
+    )
 
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
         delete_candidate_path(rname, endpoint, 100)
-        cmp_json_output_exact(rname,
-                              "show yang operational-data /frr-pathd:pathd pathd",
-                              "step2/show_operational_data.ref")
+        cmp_json_output_exact(
+            rname,
+            "show yang operational-data /frr-pathd:pathd pathd",
+            "step2/show_operational_data.ref",
+        )
+
 
 #
 # Step 3
@@ -373,53 +452,62 @@ def test_srte_config_remove_candidate_check_operational_data_step2():
 def test_srte_add_two_candidates_step3():
     setup_testcase("Test (step 3): second Candidate Path has higher Priority")
 
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        for pref, cand_name in [('100', 'first'), ('200', 'second')]:
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        for pref, cand_name in [("100", "first"), ("200", "second")]:
             add_candidate_path(rname, endpoint, pref, cand_name)
-        cmp_json_output(rname,
-                        "show yang operational-data /frr-pathd:pathd pathd",
-                        "step3/show_operational_data_with_two_candidates.ref")
+        cmp_json_output(
+            rname,
+            "show yang operational-data /frr-pathd:pathd pathd",
+            "step3/show_operational_data_with_two_candidates.ref",
+        )
 
     # cleanup
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        for pref in ['100', '200']:
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        for pref in ["100", "200"]:
             delete_candidate_path(rname, endpoint, pref)
 
+
 def test_srte_add_two_candidates_with_reverse_priority_step3():
     setup_testcase("Test (step 3): second Candidate Path has lower Priority")
 
     # Use reversed priorities here
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        for pref, cand_name in [('200', 'first'), ('100', 'second')]:
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        for pref, cand_name in [("200", "first"), ("100", "second")]:
             add_candidate_path(rname, endpoint, pref, cand_name)
-        cmp_json_output(rname,
-                        "show yang operational-data /frr-pathd:pathd pathd",
-                        "step3/show_operational_data_with_two_candidates.ref")
+        cmp_json_output(
+            rname,
+            "show yang operational-data /frr-pathd:pathd pathd",
+            "step3/show_operational_data_with_two_candidates.ref",
+        )
 
     # cleanup
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        for pref in ['100', '200']:
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        for pref in ["100", "200"]:
             delete_candidate_path(rname, endpoint, pref)
 
+
 def test_srte_remove_best_candidate_step3():
     setup_testcase("Test (step 3): delete the Candidate Path with higher priority")
 
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        for pref, cand_name in [('100', 'first'), ('200', 'second')]:
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        for pref, cand_name in [("100", "first"), ("200", "second")]:
             add_candidate_path(rname, endpoint, pref, cand_name)
 
     # Delete candidate with higher priority
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
         delete_candidate_path(rname, endpoint, 200)
 
     # Candidate with lower priority should get active now
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        cmp_json_output(rname,
-                        "show yang operational-data /frr-pathd:pathd pathd",
-                        "step3/show_operational_data_with_single_candidate.ref")
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        cmp_json_output(
+            rname,
+            "show yang operational-data /frr-pathd:pathd pathd",
+            "step3/show_operational_data_with_single_candidate.ref",
+        )
         # cleanup
         delete_candidate_path(rname, endpoint, 100)
 
+
 #
 # Step 4
 #
@@ -428,38 +516,38 @@ def test_srte_remove_best_candidate_step3():
 def test_srte_change_segment_list_check_mpls_table_step4():
     setup_testcase("Test (step 4): check MPLS table for changed Segment List")
 
-    for rname, endpoint in [('rt1', '6.6.6.6'), ('rt6', '1.1.1.1')]:
-        add_candidate_path(rname, endpoint, 100, 'default')
-	# now change the segment list name
-        add_candidate_path(rname, endpoint, 100, 'default', 'test')
-        cmp_json_output(rname,
-                        "show mpls table json",
-                        "step4/show_mpls_table.ref")
+    for rname, endpoint in [("rt1", "6.6.6.6"), ("rt6", "1.1.1.1")]:
+        add_candidate_path(rname, endpoint, 100, "default")
+        # now change the segment list name
+        add_candidate_path(rname, endpoint, 100, "default", "test")
+        cmp_json_output(rname, "show mpls table json", "step4/show_mpls_table.ref")
         delete_candidate_path(rname, endpoint, 100)
 
-def test_srte_segment_list_add_segment_check_mpls_table_step4():
-    setup_testcase("Test (step 4): check MPLS table for added (then changed and finally deleted) segment")
 
-    add_candidate_path('rt1', '6.6.6.6', 100, 'default', 'test')
+def test_srte_segment_list_add_segment_check_mpls_table_step4():
+    setup_testcase(
+        "Test (step 4): check MPLS table for added (then changed and finally deleted) segment"
+    )
+
+    add_candidate_path("rt1", "6.6.6.6", 100, "default", "test")
 
     # first add a new segment
-    add_segment('rt1', 'test', 25, 16050)
-    cmp_json_output('rt1',
-                    "show mpls table json",
-                    "step4/show_mpls_table_add_segment.ref")
+    add_segment("rt1", "test", 25, 16050)
+    cmp_json_output(
+        "rt1", "show mpls table json", "step4/show_mpls_table_add_segment.ref"
+    )
 
     # ... then change it ...
-    add_segment('rt1', 'test', 25, 16030)
-    cmp_json_output('rt1',
-                    "show mpls table json",
-                    "step4/show_mpls_table_change_segment.ref")
+    add_segment("rt1", "test", 25, 16030)
+    cmp_json_output(
+        "rt1", "show mpls table json", "step4/show_mpls_table_change_segment.ref"
+    )
 
     # ... and finally delete it
-    delete_segment('rt1', 'test', 25)
-    cmp_json_output('rt1',
-                    "show mpls table json",
-                    "step4/show_mpls_table.ref")
-    delete_candidate_path('rt1', '6.6.6.6', 100)
+    delete_segment("rt1", "test", 25)
+    cmp_json_output("rt1", "show mpls table json", "step4/show_mpls_table.ref")
+    delete_candidate_path("rt1", "6.6.6.6", 100)
+
 
 #
 # Step 5
@@ -467,68 +555,81 @@ def test_srte_segment_list_add_segment_check_mpls_table_step4():
 # Checking the nexthop using a single SR Policy and a Candidate Path with configured route-map
 #
 def test_srte_route_map_with_sr_policy_check_nextop_step5():
-    setup_testcase("Test (step 5): recursive nexthop learned through BGP neighbour should be aligned with SR Policy from route-map")
+    setup_testcase(
+        "Test (step 5): recursive nexthop learned through BGP neighbour should be aligned with SR Policy from route-map"
+    )
 
     # (re-)build the SR Policy two times to ensure that reinstalling still works
-    for i in [1,2]:
-        cmp_json_output('rt1',
-                        "show ip route bgp json",
-                        "step5/show_ip_route_bgp_inactive_srte.ref")
+    for i in [1, 2]:
+        cmp_json_output(
+            "rt1", "show ip route bgp json", "step5/show_ip_route_bgp_inactive_srte.ref"
+        )
 
-        delete_sr_policy('rt1', '6.6.6.6')
-        cmp_json_output('rt1',
-                        "show ip route bgp json",
-                        "step5/show_ip_route_bgp_inactive_srte.ref")
+        delete_sr_policy("rt1", "6.6.6.6")
+        cmp_json_output(
+            "rt1", "show ip route bgp json", "step5/show_ip_route_bgp_inactive_srte.ref"
+        )
 
-        create_sr_policy('rt1', '6.6.6.6', 1111)
-        cmp_json_output('rt1',
-                        "show ip route bgp json",
-                        "step5/show_ip_route_bgp_inactive_srte.ref")
+        create_sr_policy("rt1", "6.6.6.6", 1111)
+        cmp_json_output(
+            "rt1", "show ip route bgp json", "step5/show_ip_route_bgp_inactive_srte.ref"
+        )
 
-        add_candidate_path('rt1', '6.6.6.6', 100, 'default')
-        cmp_json_output('rt1',
-                        "show ip route bgp json",
-                        "step5/show_ip_route_bgp_active_srte.ref")
+        add_candidate_path("rt1", "6.6.6.6", 100, "default")
+        cmp_json_output(
+            "rt1", "show ip route bgp json", "step5/show_ip_route_bgp_active_srte.ref"
+        )
+
+        delete_candidate_path("rt1", "6.6.6.6", 100)
 
-        delete_candidate_path('rt1', '6.6.6.6', 100)
 
 def test_srte_route_map_with_sr_policy_reinstall_prefix_sid_check_nextop_step5():
-    setup_testcase("Test (step 5): remove and re-install prefix SID on fist path element and check SR Policy activity")
+    setup_testcase(
+        "Test (step 5): remove and re-install prefix SID on fist path element and check SR Policy activity"
+    )
 
     # first add a candidate path so the SR Policy is active
-    add_candidate_path('rt1', '6.6.6.6', 100, 'default')
-    cmp_json_output('rt1',
-                    "show yang operational-data /frr-pathd:pathd pathd",
-                    "step5/show_operational_data_active.ref")
+    add_candidate_path("rt1", "6.6.6.6", 100, "default")
+    cmp_json_output(
+        "rt1",
+        "show yang operational-data /frr-pathd:pathd pathd",
+        "step5/show_operational_data_active.ref",
+    )
 
     # delete prefix SID from first element of the configured path and check
     # if the SR Policy is inactive since the label can't be resolved anymore
-    delete_prefix_sid('rt5', "5.5.5.5/32")
-    cmp_json_output('rt1',
-                    "show yang operational-data /frr-pathd:pathd pathd",
-                    "step5/show_operational_data_inactive.ref")
-    cmp_json_output('rt1',
-                    "show ip route bgp json",
-                    "step5/show_ip_route_bgp_inactive_srte.ref")
+    delete_prefix_sid("rt5", "5.5.5.5/32")
+    cmp_json_output(
+        "rt1",
+        "show yang operational-data /frr-pathd:pathd pathd",
+        "step5/show_operational_data_inactive.ref",
+    )
+    cmp_json_output(
+        "rt1", "show ip route bgp json", "step5/show_ip_route_bgp_inactive_srte.ref"
+    )
 
     # re-create the prefix SID and check if the SR Policy is active
-    create_prefix_sid('rt5', "5.5.5.5/32", 50)
-    cmp_json_output('rt1',
-                    "show yang operational-data /frr-pathd:pathd pathd",
-                    "step5/show_operational_data_active.ref")
-    cmp_json_output('rt1',
-                    "show ip route bgp json",
-                    "step5/show_ip_route_bgp_active_srte.ref")
+    create_prefix_sid("rt5", "5.5.5.5/32", 50)
+    cmp_json_output(
+        "rt1",
+        "show yang operational-data /frr-pathd:pathd pathd",
+        "step5/show_operational_data_active.ref",
+    )
+    cmp_json_output(
+        "rt1", "show ip route bgp json", "step5/show_ip_route_bgp_active_srte.ref"
+    )
+
 
 # Memory leak test template
 def test_memory_leak():
     "Run the memory leak test and report results."
     tgen = get_topogen()
     if not tgen.is_memleak_enabled():
-        pytest.skip('Memory leak test/report is disabled')
+        pytest.skip("Memory leak test/report is disabled")
 
     tgen.report_memory_leaks()
 
-if __name__ == '__main__':
+
+if __name__ == "__main__":
     args = ["-s"] + sys.argv[1:]
     sys.exit(pytest.main(args))

tests/topotests/isis-sr-topo1/test_isis_sr_topo1.py

@@ -86,6 +86,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.isisd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/isis-tilfa-topo1/test_isis_tilfa_topo1.py

@@ -179,6 +179,7 @@ class TemplateTopo(Topo):
                         f_in.close()
                         f_out.close()
 
+
 def setup_module(mod):
     "Sets up the pytest environment"
     tgen = Topogen(TemplateTopo, mod.__name__)

tests/topotests/isis-topo1-vrf/test_isis_topo1_vrf.py

@@ -45,6 +45,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.isisd]
 
+
 class ISISTopo1(Topo):
     "Simple two layer ISIS vrf topology"
 

tests/topotests/isis-topo1/test_isis_topo1.py

@@ -47,6 +47,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.isisd]
 
+
 class ISISTopo1(Topo):
     "Simple two layer ISIS topology"
 

tests/topotests/ldp-oc-acl-topo1/test_ldp_oc_acl_topo1.py

@@ -80,6 +80,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.ldpd, pytest.mark.ospfd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/ldp-oc-topo1/test_ldp_oc_topo1.py

@@ -80,6 +80,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.ldpd, pytest.mark.ospfd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/ldp-sync-ospf-topo1/test_ldp_sync_ospf_topo1.py

@@ -81,6 +81,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.ldpd, pytest.mark.ospfd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/ldp-vpls-topo1/test_ldp_vpls_topo1.py

@@ -82,6 +82,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.ldpd, pytest.mark.ospfd]
 
+
 class TemplateTopo(Topo):
     "Test topology builder"
 

tests/topotests/lib/bgp.py

@@ -2516,8 +2516,9 @@ def verify_best_path_as_per_admin_distance(
 
 
 @retry(attempts=5, wait=2, return_is_str=True, initial_wait=2)
-def verify_bgp_rib(tgen, addr_type, dut, input_dict, next_hop=None,
-aspath=None, multi_nh=None):
+def verify_bgp_rib(
+    tgen, addr_type, dut, input_dict, next_hop=None, aspath=None, multi_nh=None
+):
     """
     This API is to verify whether bgp rib has any
     matching route for a nexthop.
@@ -2663,25 +2664,35 @@ aspath=None, multi_nh=None):
                                 if not isinstance(next_hop, list):
                                     next_hop = [next_hop]
                                     list1 = next_hop
-                                found_hops = [rib_r["ip"] for rib_r in
-                                              rib_routes_json["routes"][
-                                                  st_rt][0]["nexthops"]]
+                                found_hops = [
+                                    rib_r["ip"]
+                                    for rib_r in rib_routes_json["routes"][st_rt][0][
+                                        "nexthops"
+                                    ]
+                                ]
                                 list2 = found_hops
-                                missing_list_of_nexthops = \
-                                    set(list2).difference(list1)
-                                additional_nexthops_in_required_nhs = \
-                                    set(list1).difference(list2)
+                                missing_list_of_nexthops = set(list2).difference(list1)
+                                additional_nexthops_in_required_nhs = set(
+                                    list1
+                                ).difference(list2)
 
                                 if list2:
                                     if additional_nexthops_in_required_nhs:
-                                        logger.info("Missing nexthop %s for route"\
-                                        " %s in RIB of router %s\n", \
-                                        additional_nexthops_in_required_nhs,  \
-                                        st_rt, dut)
-                                        errormsg=("Nexthop {} is Missing for "\
-                                        "route {} in RIB of router {}\n".format(
+                                        logger.info(
+                                            "Missing nexthop %s for route"
+                                            " %s in RIB of router %s\n",
                                             additional_nexthops_in_required_nhs,
-                                            st_rt, dut))
+                                            st_rt,
+                                            dut,
+                                        )
+                                        errormsg = (
+                                            "Nexthop {} is Missing for "
+                                            "route {} in RIB of router {}\n".format(
+                                                additional_nexthops_in_required_nhs,
+                                                st_rt,
+                                                dut,
+                                            )
+                                        )
                                         return errormsg
                                     else:
                                         nh_found = True

tests/topotests/lib/ospf.py

@@ -94,7 +94,9 @@ def create_router_ospf(tgen, topo, input_dict=None, build=False, load_config=Tru
     return result
 
 
-def __create_ospf_global(tgen, input_dict, router, build=False, load_config=True, ospf="ospf"):
+def __create_ospf_global(
+    tgen, input_dict, router, build=False, load_config=True, ospf="ospf"
+):
     """
     Helper API to create ospf global configuration.
 

tests/topotests/lib/pim.py

@@ -1564,26 +1564,30 @@ def verify_pim_interface(tgen, topo, dut, interface=None, interface_ip=None):
         logger.info("[DUT: %s]: Verifying PIM interface status:", dut)
 
         rnode = tgen.routers()[dut]
-        show_ip_pim_interface_json = rnode.\
-            vtysh_cmd("show ip pim interface json", isjson=True)
+        show_ip_pim_interface_json = rnode.vtysh_cmd(
+            "show ip pim interface json", isjson=True
+        )
 
-        logger.info("show_ip_pim_interface_json: \n %s",
-                    show_ip_pim_interface_json)
+        logger.info("show_ip_pim_interface_json: \n %s", show_ip_pim_interface_json)
 
         if interface_ip:
             if interface in show_ip_pim_interface_json:
                 pim_intf_json = show_ip_pim_interface_json[interface]
                 if pim_intf_json["address"] != interface_ip:
-                    errormsg = ("[DUT %s]: PIM interface "
-                            "ip is not correct "
-                            "[FAILED]!! Expected : %s, Found : %s"
-                            %(dut, pim_intf_json["address"],interface_ip))
+                    errormsg = (
+                        "[DUT %s]: PIM interface "
+                        "ip is not correct "
+                        "[FAILED]!! Expected : %s, Found : %s"
+                        % (dut, pim_intf_json["address"], interface_ip)
+                    )
                     return errormsg
                 else:
-                    logger.info("[DUT %s]: PIM interface "
-                            "ip is correct "
-                            "[Passed]!! Expected : %s, Found : %s"
-                            %(dut, pim_intf_json["address"],interface_ip))
+                    logger.info(
+                        "[DUT %s]: PIM interface "
+                        "ip is correct "
+                        "[Passed]!! Expected : %s, Found : %s"
+                        % (dut, pim_intf_json["address"], interface_ip)
+                    )
                     return True
         else:
             for destLink, data in topo["routers"][dut]["links"].items():
@@ -1595,24 +1599,36 @@ def verify_pim_interface(tgen, topo, dut, interface=None, interface_ip=None):
                     pim_intf_ip = data["ipv4"].split("/")[0]
 
                     if pim_interface in show_ip_pim_interface_json:
-                        pim_intf_json = show_ip_pim_interface_json\
-                            [pim_interface]
+                        pim_intf_json = show_ip_pim_interface_json[pim_interface]
 
                     # Verifying PIM interface
-                    if pim_intf_json["address"] != pim_intf_ip and \
-                        pim_intf_json["state"] != "up":
-                        errormsg = ("[DUT %s]: PIM interface: %s "
-                                    "PIM interface ip: %s, status check "
-                                    "[FAILED]!! Expected : %s, Found : %s"
-                                    %(dut, pim_interface, pim_intf_ip,
-                                    pim_interface, pim_intf_json["state"]))
+                    if (
+                        pim_intf_json["address"] != pim_intf_ip
+                        and pim_intf_json["state"] != "up"
+                    ):
+                        errormsg = (
+                            "[DUT %s]: PIM interface: %s "
+                            "PIM interface ip: %s, status check "
+                            "[FAILED]!! Expected : %s, Found : %s"
+                            % (
+                                dut,
+                                pim_interface,
+                                pim_intf_ip,
+                                pim_interface,
+                                pim_intf_json["state"],
+                            )
+                        )
                         return errormsg
 
-                    logger.info("[DUT %s]: PIM interface: %s, "
-                                "interface ip: %s, status: %s"
-                                " [PASSED]!!",
-                                dut, pim_interface, pim_intf_ip,
-                                pim_intf_json["state"])
+                    logger.info(
+                        "[DUT %s]: PIM interface: %s, "
+                        "interface ip: %s, status: %s"
+                        " [PASSED]!!",
+                        dut,
+                        pim_interface,
+                        pim_intf_ip,
+                        pim_intf_json["state"],
+                    )
 
     logger.debug("Exiting lib API: {}".format(sys._getframe().f_code.co_name))
     return True
@@ -3420,30 +3436,36 @@ def verify_igmp_interface(tgen, topo, dut, igmp_iface, interface_ip):
         if router != dut:
             continue
 
-        logger.info("[DUT: %s]: Verifying PIM interface status:",
-                    dut)
+        logger.info("[DUT: %s]: Verifying PIM interface status:", dut)
 
         rnode = tgen.routers()[dut]
-        show_ip_igmp_interface_json = \
-            run_frr_cmd(rnode, "show ip igmp interface json", isjson=True)
+        show_ip_igmp_interface_json = run_frr_cmd(
+            rnode, "show ip igmp interface json", isjson=True
+        )
 
-        if  igmp_iface in show_ip_igmp_interface_json:
+        if igmp_iface in show_ip_igmp_interface_json:
             igmp_intf_json = show_ip_igmp_interface_json[igmp_iface]
             # Verifying igmp interface
-            if  igmp_intf_json["address"] != interface_ip:
-                errormsg = ("[DUT %s]: igmp interface ip is not correct "
-                            "[FAILED]!! Expected : %s, Found : %s"
-                            %(dut, igmp_intf_json["address"], interface_ip))
+            if igmp_intf_json["address"] != interface_ip:
+                errormsg = (
+                    "[DUT %s]: igmp interface ip is not correct "
+                    "[FAILED]!! Expected : %s, Found : %s"
+                    % (dut, igmp_intf_json["address"], interface_ip)
+                )
                 return errormsg
 
-            logger.info("[DUT %s]: igmp interface: %s, "
-                        "interface ip: %s"
-                        " [PASSED]!!",
-                        dut, igmp_iface, interface_ip)
+            logger.info(
+                "[DUT %s]: igmp interface: %s, " "interface ip: %s" " [PASSED]!!",
+                dut,
+                igmp_iface,
+                interface_ip,
+            )
         else:
-            errormsg = ("[DUT %s]: igmp interface: %s "
-                        "igmp interface ip: %s, is not present "
-                        %(dut, igmp_iface, interface_ip))
+            errormsg = (
+                "[DUT %s]: igmp interface: %s "
+                "igmp interface ip: %s, is not present "
+                % (dut, igmp_iface, interface_ip)
+            )
             return errormsg
 
     logger.debug("Exiting lib API: {}".format(sys._getframe().f_code.co_name))

tests/topotests/lib/snmptest.py

@@ -86,12 +86,11 @@ class SnmpTester(object):
     def _get_snmp_oid(snmp_output):
         tokens = snmp_output.strip().split()
 
-#        if len(tokens) > 5:
-#            return None
-
+        #        if len(tokens) > 5:
+        #            return None
 
         # third token is the value of the object
-        return tokens[0].split('.',1)[1] 
+        return tokens[0].split(".", 1)[1]
 
     def _parse_multiline(self, snmp_output):
         results = snmp_output.strip().split("\r\n")
@@ -142,7 +141,11 @@ class SnmpTester(object):
                     print("FAIL: missing oid key {}".format(oid))
                     return False
                 if results_dict[oid] != values[index]:
-                    print("FAIL{} {} |{}| == |{}|".format(oid, index, results_dict[oid], values[index]))
+                    print(
+                        "FAIL{} {} |{}| == |{}|".format(
+                            oid, index, results_dict[oid], values[index]
+                        )
+                    )
                     return False
                 index += 1
             return True

tests/topotests/multicast-pim-bsm-topo1/test_mcast_pim_bsmp_01.py

@@ -706,7 +706,7 @@ def test_BSR_CRP_with_blackhole_address_p1(request):
         "f1": {
             "static_routes": [
                 {"network": [BSR1_ADDR, CRP], "next_hop": "blackhole", "delete": True},
-                {"network": BSR1_ADDR, "next_hop": NEXT_HOP1}
+                {"network": BSR1_ADDR, "next_hop": NEXT_HOP1},
             ]
         }
     }
@@ -1118,7 +1118,10 @@ def test_static_rp_override_p1(request):
         "l1": {
             "pim": {
                 "rp": [
-                    {"rp_addr": "33.33.33.33", "group_addr_range": ["225.1.1.1/32"],}
+                    {
+                        "rp_addr": "33.33.33.33",
+                        "group_addr_range": ["225.1.1.1/32"],
+                    }
                 ]
             }
         }
@@ -1294,7 +1297,8 @@ def test_bsmp_stress_add_del_restart_p2(request):
         assert (
             rp_add1 == rp2[group]
         ), "Testcase {} :Failed \n Error : rp expected {} rp received {}".format(
-            tc_name, rp_add1,
+            tc_name,
+            rp_add1,
         )
 
         # Verify if that rp is installed
@@ -1632,7 +1636,14 @@ def test_iif_join_state_p0(request):
     # Add back route for RP to make it reachable
     step("Add back route for RP to make it reachable")
     input_dict = {
-        "l1": {"static_routes": [{"network": rp_ip, "next_hop": next_hop_lhr,}]}
+        "l1": {
+            "static_routes": [
+                {
+                    "network": rp_ip,
+                    "next_hop": next_hop_lhr,
+                }
+            ]
+        }
     }
     result = create_static_routes(tgen, input_dict)
     assert result is True, "Testcase {} :Failed \n Error {}".format(tc_name, result)

tests/topotests/multicast-pim-bsm-topo2/test_mcast_pim_bsmp_02.py

@@ -695,7 +695,8 @@ def test_RP_priority_p0(request):
     assert (
         rp_add1 == rp2[group]
     ), "Testcase {} :Failed \n Error : rp expected {} rp received {}".format(
-        tc_name, rp_add1,
+        tc_name,
+        rp_add1,
     )
 
     # Verify if that rp is installed

tests/topotests/multicast-pim-sm-topo1/test_multicast_pim_sm_topo1.py

@@ -102,7 +102,7 @@ from lib.pim import (
     clear_ip_mroute,
     clear_ip_pim_interface_traffic,
     verify_igmp_config,
-    clear_ip_mroute_verify
+    clear_ip_mroute_verify,
 )
 from lib.topolog import logger
 from lib.topojson import build_topo_from_json, build_config_from_json

tests/topotests/multicast-pim-sm-topo2/test_multicast_pim_sm_topo2.py

@@ -877,7 +877,7 @@ def test_verify_SPT_switchover_when_RPT_and_SPT_path_is_different_p0(request):
             data["src_address"],
             _IGMP_JOIN_RANGE,
             data["iif"],
-            data["oil"]
+            data["oil"],
         )
         assert result is True, "Testcase {} : Failed Error: {}".format(tc_name, result)
 
@@ -1122,8 +1122,9 @@ def test_verify_mroute_after_shut_noshut_of_upstream_interface_p1(request):
 
     done_flag = False
     for retry in range(1, 11):
-        result = verify_upstream_iif(tgen, "l1", "Unknown", source, IGMP_JOIN_RANGE_2,
-            expected=False)
+        result = verify_upstream_iif(
+            tgen, "l1", "Unknown", source, IGMP_JOIN_RANGE_2, expected=False
+        )
         if result is not True:
             done_flag = True
         else:
@@ -1515,7 +1516,7 @@ def test_verify_mroute_when_FRR_is_FHR_and_LHR_p0(request):
                 _IGMP_JOIN_RANGE,
                 data["iif"],
                 data["oil"],
-                expected=False
+                expected=False,
             )
             if result is not True:
                 done_flag = True
@@ -1928,9 +1929,10 @@ def test_verify_oil_iif_for_mroute_after_shut_noshut_source_interface_p1(request
         "f1-i8-eth2",
         expected=False,
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n mroutes are"
-        " still present \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n mroutes are" " still present \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behavior: {}".format(result))
 

tests/topotests/multicast-pim-sm-topo3/test_multicast_pim_sm_topo3.py

@@ -597,9 +597,10 @@ def test_verify_oil_when_join_prune_sent_scenario_1_p1(request):
 
     input_traffic = {"l1": {"traffic_sent": [intf_l1_i1]}}
     result = verify_multicast_traffic(tgen, input_traffic, expected=False)
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        " Traffic is not stopped yet \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " " Traffic is not stopped yet \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -612,9 +613,10 @@ def test_verify_oil_when_join_prune_sent_scenario_1_p1(request):
     result = verify_igmp_groups(
         tgen, dut, intf_l1_i1, IGMP_JOIN_RANGE_1, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        "IGMP groups are not deleted \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " "IGMP groups are not deleted \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -655,9 +657,10 @@ def test_verify_oil_when_join_prune_sent_scenario_1_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n "
-            "mroutes are still present \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -722,9 +725,10 @@ def test_verify_oil_when_join_prune_sent_scenario_1_p1(request):
 
     input_traffic = {"f1": {"traffic_sent": [intf_f1_i8]}}
     result = verify_multicast_traffic(tgen, input_traffic, expected=False)
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        " Traffic is not stopped yet \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " " Traffic is not stopped yet \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -737,9 +741,10 @@ def test_verify_oil_when_join_prune_sent_scenario_1_p1(request):
     result = verify_igmp_groups(
         tgen, dut, intf_f1_i8, IGMP_JOIN_RANGE_1, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        "IGMP groups are not deleted \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " "IGMP groups are not deleted \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -775,9 +780,10 @@ def test_verify_oil_when_join_prune_sent_scenario_1_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n "
-            "mroutes are still present \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -959,9 +965,10 @@ def test_verify_oil_when_join_prune_sent_scenario_2_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n "
-            "mroutes are still present \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -1022,9 +1029,10 @@ def test_verify_oil_when_join_prune_sent_scenario_2_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n "
-            "mroutes are still present \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n " "mroutes are still present \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -1190,9 +1198,10 @@ def test_shut_noshut_source_interface_when_upstream_cleared_from_LHR_p1(request)
     result = verify_ip_mroutes(
         tgen, "f1", source_i2, IGMP_JOIN_RANGE_1, intf_f1_i2, intf_f1_r2, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n mroutes are"
-        " still present \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n mroutes are" " still present \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behavior: {}".format(result))
 
@@ -1630,7 +1639,14 @@ def test_verify_remove_add_igmp_config_to_receiver_interface_p0(request):
     input_dict_2 = {
         "l1": {
             "igmp": {
-                "interfaces": {intf_l1_i1: {"igmp": {"version": "2", "delete": True,}}}
+                "interfaces": {
+                    intf_l1_i1: {
+                        "igmp": {
+                            "version": "2",
+                            "delete": True,
+                        }
+                    }
+                }
             }
         }
     }
@@ -1642,9 +1658,10 @@ def test_verify_remove_add_igmp_config_to_receiver_interface_p0(request):
     dut = "l1"
     interface = topo["routers"]["l1"]["links"]["i1"]["interface"]
     result = verify_igmp_groups(tgen, dut, interface, IGMP_JOIN_RANGE_1, expected=False)
-    assert result is not True, (
-        "Testcase {} : Failed \n Groups are not"
-        " present \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n Groups are not" " present \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -1712,7 +1729,14 @@ def test_verify_remove_add_igmp_config_to_receiver_interface_p0(request):
     input_dict_2 = {
         "l1": {
             "igmp": {
-                "interfaces": {intf_l1_i1: {"igmp": {"version": "2", "delete": True,}}}
+                "interfaces": {
+                    intf_l1_i1: {
+                        "igmp": {
+                            "version": "2",
+                            "delete": True,
+                        }
+                    }
+                }
             }
         }
     }
@@ -1725,9 +1749,10 @@ def test_verify_remove_add_igmp_config_to_receiver_interface_p0(request):
     dut = "l1"
     interface = topo["routers"]["l1"]["links"]["i1"]["interface"]
     result = verify_igmp_groups(tgen, dut, interface, IGMP_JOIN_RANGE_1, expected=False)
-    assert result is not True, (
-        "Testcase {} : Failed \n Groups are not"
-        " present \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n Groups are not" " present \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -1811,7 +1836,14 @@ def test_verify_remove_add_igmp_config_to_receiver_interface_p0(request):
     input_dict_2 = {
         "l1": {
             "igmp": {
-                "interfaces": {intf_l1_i1: {"igmp": {"version": "2", "delete": True,}}}
+                "interfaces": {
+                    intf_l1_i1: {
+                        "igmp": {
+                            "version": "2",
+                            "delete": True,
+                        }
+                    }
+                }
             }
         }
     }
@@ -1831,9 +1863,10 @@ def test_verify_remove_add_igmp_config_to_receiver_interface_p0(request):
     result = verify_ip_mroutes(
         tgen, dut, source, IGMP_JOIN_RANGE_1, iif, oil, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n routes are still"
-        " present \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n routes are still" " present \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -1995,7 +2028,14 @@ def test_verify_remove_add_igmp_commands_when_pim_configured_p0(request):
     input_dict_2 = {
         "l1": {
             "igmp": {
-                "interfaces": {intf_l1_i1: {"igmp": {"version": "2", "delete": True,}}}
+                "interfaces": {
+                    intf_l1_i1: {
+                        "igmp": {
+                            "version": "2",
+                            "delete": True,
+                        }
+                    }
+                }
             }
         }
     }
@@ -2009,9 +2049,10 @@ def test_verify_remove_add_igmp_commands_when_pim_configured_p0(request):
     )
 
     result = verify_igmp_config(tgen, input_dict_1, expected=False)
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        "IGMP interface is not removed \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " "IGMP interface is not removed \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -2914,9 +2955,10 @@ def test_mroute_after_removing_RP_sending_IGMP_prune_p2(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n "
-            "mroute still present \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n " "mroute still present \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -3259,9 +3301,10 @@ def test_prune_sent_to_LHR_and_FHR_when_PIMnbr_down_p2(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n "
-            "mroute still present \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n " "mroute still present \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -3287,9 +3330,10 @@ def test_prune_sent_to_LHR_and_FHR_when_PIMnbr_down_p2(request):
             IGMP_JOIN_RANGE_1,
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n "
-            "upstream still present \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n " "upstream still present \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -3311,9 +3355,10 @@ def test_prune_sent_to_LHR_and_FHR_when_PIMnbr_down_p2(request):
     result = verify_pim_rp_info(
         tgen, topo, dut, GROUP_RANGE_1, "Unknown", rp_address, SOURCE, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        "RP iif is not updated \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " "RP iif is not updated \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -3459,9 +3504,10 @@ def test_prune_sent_to_LHR_and_FHR_when_PIMnbr_down_p2(request):
     result = verify_pim_rp_info(
         tgen, topo, dut, GROUP_RANGE_1, "Unknown", rp_address, SOURCE, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        "RP iif is not updated \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " "RP iif is not updated \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -3606,9 +3652,10 @@ def test_prune_sent_to_LHR_and_FHR_when_PIMnbr_down_p2(request):
     result = verify_pim_rp_info(
         tgen, topo, dut, GROUP_RANGE_1, "Unknown", rp_address, SOURCE, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n "
-        "RP iif is not updated \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n " "RP iif is not updated \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -3873,7 +3920,12 @@ def test_verify_multicast_traffic_when_LHR_connected_to_RP_p1(request):
         "l1": {
             "igmp": {
                 "interfaces": {
-                    "l1-i1-eth1": {"igmp": {"version": "2", "delete": True,}}
+                    "l1-i1-eth1": {
+                        "igmp": {
+                            "version": "2",
+                            "delete": True,
+                        }
+                    }
                 }
             }
         }
@@ -4107,9 +4159,10 @@ def test_verify_multicast_traffic_when_LHR_connected_to_RP_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n"
-            "mroutes are cleared \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n" "mroutes are cleared \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -4181,9 +4234,10 @@ def test_verify_multicast_traffic_when_LHR_connected_to_RP_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n"
-            " mroutes are cleared \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n" " mroutes are cleared \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -4248,9 +4302,10 @@ def test_verify_multicast_traffic_when_LHR_connected_to_RP_p1(request):
     result = verify_ip_mroutes(
         tgen, dut, src_address, _IGMP_JOIN_RANGE, iif, oil, expected=False
     )
-    assert result is not True, (
-        "Testcase {} : Failed \n"
-        " mroutes are cleared \n Error: {}".format(tc_name, result)
+    assert (
+        result is not True
+    ), "Testcase {} : Failed \n" " mroutes are cleared \n Error: {}".format(
+        tc_name, result
     )
     logger.info("Expected Behaviour: {}".format(result))
 
@@ -4459,9 +4514,10 @@ def test_verify_multicast_traffic_when_FHR_connected_to_RP_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n"
-            " mroutes are cleared \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n" " mroutes are cleared \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -4524,9 +4580,10 @@ def test_verify_multicast_traffic_when_FHR_connected_to_RP_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n"
-            " mroutes are cleared \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n" " mroutes are cleared \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 
@@ -4595,9 +4652,10 @@ def test_verify_multicast_traffic_when_FHR_connected_to_RP_p1(request):
             data["oil"],
             expected=False,
         )
-        assert result is not True, (
-            "Testcase {} : Failed \n"
-            " mroutes are cleared \n Error: {}".format(tc_name, result)
+        assert (
+            result is not True
+        ), "Testcase {} : Failed \n" " mroutes are cleared \n Error: {}".format(
+            tc_name, result
         )
         logger.info("Expected Behaviour: {}".format(result))
 

tests/topotests/multicast-pim-sm-topo3/test_multicast_pim_sm_topo4.py

@@ -1009,7 +1009,11 @@ def test_PIM_hello_tx_rx_p1(request):
     intf_c1_l1 = topo["routers"]["c1"]["links"]["l1"]["interface"]
 
     step("verify before stats on C1")
-    state_dict = {"c1": {intf_c1_l1: ["helloTx", "helloRx"],}}
+    state_dict = {
+        "c1": {
+            intf_c1_l1: ["helloTx", "helloRx"],
+        }
+    }
 
     c1_state_before = verify_pim_interface_traffic(tgen, state_dict)
     assert isinstance(
@@ -1040,7 +1044,11 @@ def test_PIM_hello_tx_rx_p1(request):
     ), "Testcase{} : Failed Error: {}" "stats incremented".format(tc_name, result)
 
     step("verify before stats on l1")
-    l1_state_dict = {"l1": {intf_l1_c1: ["helloTx", "helloRx"],}}
+    l1_state_dict = {
+        "l1": {
+            intf_l1_c1: ["helloTx", "helloRx"],
+        }
+    }
 
     l1_state_before = verify_pim_interface_traffic(tgen, l1_state_dict)
     assert isinstance(
@@ -1077,7 +1085,11 @@ def test_PIM_hello_tx_rx_p1(request):
     l1_state_after = {}
 
     step("verify before stats on C1")
-    state_dict = {"c1": {intf_c1_l1: ["helloTx", "helloRx"],}}
+    state_dict = {
+        "c1": {
+            intf_c1_l1: ["helloTx", "helloRx"],
+        }
+    }
 
     c1_state_before = verify_pim_interface_traffic(tgen, state_dict)
     assert isinstance(

tests/topotests/multicast-pim-static-rp-topo1/test_multicast_pim_static_rp.py

@@ -281,6 +281,7 @@ def teardown_module():
 #
 #####################################################
 
+
 def config_to_send_igmp_join_and_traffic(tgen, tc_name):
     """
     API to do pre-configuration to send IGMP join and multicast
@@ -961,7 +962,12 @@ def test_add_RP_after_join_received_p1(request):
     input_dict = {
         "r1": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.2.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.2.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         }
     }
@@ -1147,32 +1153,32 @@ def test_reachable_static_RP_after_join_p0(request):
 
 def test_send_join_on_higher_preffered_rp_p1(request):
     """
-    TC_11_P1 : Verify PIM join send towards the higher preferred RP
-    TC_12_P1 : Verify PIM prune send towards the lower preferred RP
-    TC_13_P1 : Verify RPF interface is updated in mroute (kernel) when higher
-               preferred overlapping RP configured
-    TC_14_P1 : Verify IIF and OIL in "show ip pim state" updated properly when
-               higher preferred overlapping RP configured
-    TC_15_P1 : Verify upstream interfaces(IIF) and join state are updated when
-               higher preferred overlapping RP is configured
-    TC_16_P1 : Verify join is send to lower preferred RP, when higher
-               preferred RP gets deleted
-    TC_17_P1 : Verify prune is send to higher preferred RP when higher
-               preferred RP gets deleted
-    TC_18_P1 : Verify RPF interface updated in mroute when higher preferred RP
-               gets deleted
-    TC_19_P1 : Verify IIF and OIL in "show ip pim state" updated when higher
-               preferred overlapping RP is deleted
-    TC_20_P1 : Verfiy PIM upstream IIF updated when higher preferred
-               overlapping RP deleted
+     TC_11_P1 : Verify PIM join send towards the higher preferred RP
+     TC_12_P1 : Verify PIM prune send towards the lower preferred RP
+     TC_13_P1 : Verify RPF interface is updated in mroute (kernel) when higher
+                preferred overlapping RP configured
+     TC_14_P1 : Verify IIF and OIL in "show ip pim state" updated properly when
+                higher preferred overlapping RP configured
+     TC_15_P1 : Verify upstream interfaces(IIF) and join state are updated when
+                higher preferred overlapping RP is configured
+     TC_16_P1 : Verify join is send to lower preferred RP, when higher
+                preferred RP gets deleted
+     TC_17_P1 : Verify prune is send to higher preferred RP when higher
+                preferred RP gets deleted
+     TC_18_P1 : Verify RPF interface updated in mroute when higher preferred RP
+                gets deleted
+     TC_19_P1 : Verify IIF and OIL in "show ip pim state" updated when higher
+                preferred overlapping RP is deleted
+     TC_20_P1 : Verfiy PIM upstream IIF updated when higher preferred
+                overlapping RP deleted
 
-   Topology used:
-                 _______r2
-                |
-      iperf     |
-        r0-----r1
-                |
-                |_______r4
+    Topology used:
+                  _______r2
+                 |
+       iperf     |
+         r0-----r1
+                 |
+                 |_______r4
     """
 
     tgen = get_topogen()
@@ -1241,7 +1247,12 @@ def test_send_join_on_higher_preffered_rp_p1(request):
     input_dict = {
         "r4": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.4.17", "group_addr_range": ["225.1.1.1/32"],}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.4.17",
+                        "group_addr_range": ["225.1.1.1/32"],
+                    }
+                ]
             }
         }
     }
@@ -1483,22 +1494,42 @@ def test_RP_configured_as_LHR_1_p1(request):
     input_dict = {
         "r1": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r2": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r3": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r4": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
     }
@@ -1677,22 +1708,42 @@ def test_RP_configured_as_LHR_2_p1(request):
     input_dict = {
         "r1": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r2": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r3": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r4": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.1.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.1.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
     }
@@ -1863,22 +1914,42 @@ def test_RP_configured_as_FHR_1_p1(request):
     input_dict = {
         "r1": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r2": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r3": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r4": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
     }
@@ -2050,22 +2121,42 @@ def test_RP_configured_as_FHR_2_p2(request):
     input_dict = {
         "r1": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r2": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r3": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
         "r4": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.3.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.3.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         },
     }
@@ -2733,7 +2824,12 @@ def test_multiple_groups_same_RP_address_p2(request):
     input_dict = {
         "r1": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.2.17", "group_addr_range": GROUP_RANGE_ALL,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.2.17",
+                        "group_addr_range": GROUP_RANGE_ALL,
+                    }
+                ]
             }
         }
     }
@@ -2893,12 +2989,22 @@ def test_multiple_groups_different_RP_address_p2(request):
     input_dict = {
         "r2": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.2.17", "group_addr_range": GROUP_RANGE_LIST_1,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.2.17",
+                        "group_addr_range": GROUP_RANGE_LIST_1,
+                    }
+                ]
             }
         },
         "r4": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.4.17", "group_addr_range": GROUP_RANGE_LIST_2,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.4.17",
+                        "group_addr_range": GROUP_RANGE_LIST_2,
+                    }
+                ]
             }
         },
     }
@@ -3148,12 +3254,22 @@ def test_multiple_groups_different_RP_address_p2(request):
     input_dict = {
         "r2": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.2.17", "group_addr_range": GROUP_RANGE_LIST_1,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.2.17",
+                        "group_addr_range": GROUP_RANGE_LIST_1,
+                    }
+                ]
             }
         },
         "r4": {
             "pim": {
-                "rp": [{"rp_addr": "1.0.4.17", "group_addr_range": GROUP_RANGE_LIST_2,}]
+                "rp": [
+                    {
+                        "rp_addr": "1.0.4.17",
+                        "group_addr_range": GROUP_RANGE_LIST_2,
+                    }
+                ]
             }
         },
     }

tests/topotests/ospf-sr-topo1/test_ospf_sr_topo1.py

@@ -50,6 +50,7 @@ import pytest
 
 pytestmark = [pytest.mark.ospfd]
 
+
 class OspfSrTopo(Topo):
     "Test topology builder"
 

tests/topotests/ospf-tilfa-topo1/test_ospf_tilfa_topo1.py

@@ -166,6 +166,7 @@ def test_ospf_initial_convergence_step1():
         "step1/show_ip_route_initial.ref",
     )
 
+
 def test_ospf_link_protection_step2():
     logger.info("Test (step 2): check OSPF link protection")
     tgen = get_topogen()
@@ -175,9 +176,7 @@ def test_ospf_link_protection_step2():
         pytest.skip(tgen.errors)
 
     # enable TI-LFA link protection on all interfaces
-    tgen.net["rt1"].cmd(
-        'vtysh -c "conf t" -c "router ospf" -c "fast-reroute ti-lfa"'
-    )
+    tgen.net["rt1"].cmd('vtysh -c "conf t" -c "router ospf" -c "fast-reroute ti-lfa"')
 
     router_compare_json_output(
         "rt1",
@@ -197,6 +196,7 @@ def test_ospf_link_protection_step2():
         "step2/show_ip_route_initial.ref",
     )
 
+
 def test_ospf_node_protection_step3():
     logger.info("Test (step 3): check OSPF node protection")
     tgen = get_topogen()
@@ -228,6 +228,7 @@ def test_ospf_node_protection_step3():
         "step3/show_ip_route_initial.ref",
     )
 
+
 # Memory leak test template
 def test_memory_leak():
     "Run the memory leak test and report results."
@@ -237,6 +238,7 @@ def test_memory_leak():
 
     tgen.report_memory_leaks()
 
+
 if __name__ == "__main__":
     args = ["-s"] + sys.argv[1:]
     sys.exit(pytest.main(args))

tests/topotests/ospf-topo1-vrf/test_ospf_topo1_vrf.py

@@ -47,6 +47,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.ospfd]
 
+
 class OSPFTopo(Topo):
     "Test topology builder"
 

tests/topotests/ospf-topo1/test_ospf_topo1.py

@@ -47,6 +47,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.ospfd]
 
+
 class OSPFTopo(Topo):
     "Test topology builder"
 

tests/topotests/ospf6-topo1/test_ospf6_topo1.py

@@ -384,15 +384,14 @@ def test_linux_ipv6_kernel_routingTable():
                 % (i, diff)
             )
         else:
-            logger.error(
-                "r{} failed - no nhid ref file: {}".format(i, refTableFile)
-            )
+            logger.error("r{} failed - no nhid ref file: {}".format(i, refTableFile))
 
             assert False, (
                 "Linux Kernel IPv6 Routing Table verification failed for router r%s\n"
                 % (i)
             )
 
+
 def test_shutdown_check_stderr():
 
     tgen = get_topogen()

tests/topotests/ospf_basic_functionality/test_ospf_chaos.py

@@ -49,15 +49,14 @@ from lib.common_config import (
     shutdown_bringup_interface,
     topo_daemons,
     verify_rib,
-    stop_router, start_router,
+    stop_router,
+    start_router,
     create_static_routes,
     start_router_daemons,
-    kill_router_daemons
+    kill_router_daemons,
 )
 
-from lib.ospf import (
-    verify_ospf_neighbor, verify_ospf_rib,
-    create_router_ospf)
+from lib.ospf import verify_ospf_neighbor, verify_ospf_rib, create_router_ospf
 
 from lib.topolog import logger
 from lib.topojson import build_topo_from_json, build_config_from_json
@@ -69,8 +68,13 @@ pytestmark = [pytest.mark.ospfd, pytest.mark.staticd]
 topo = None
 
 NETWORK = {
-    "ipv4": ["11.0.20.1/32", "11.0.20.2/32", "11.0.20.3/32", "11.0.20.4/32",
-             "11.0.20.5/32"]
+    "ipv4": [
+        "11.0.20.1/32",
+        "11.0.20.2/32",
+        "11.0.20.3/32",
+        "11.0.20.4/32",
+        "11.0.20.5/32",
+    ]
 }
 """
 Topology:
@@ -102,6 +106,7 @@ try:
 except IOError:
     assert False, "Could not read file {}".format(jsonFile)
 
+
 class CreateTopo(Topo):
     """
     Test topology builder.
@@ -190,78 +195,70 @@ def test_ospf_chaos_tc31_p1(request):
 
     step(
         "Create static routes(10.0.20.1/32) in R1 and redistribute "
-        "to OSPF using route map.")
+        "to OSPF using route map."
+    )
 
     # Create Static routes
     input_dict = {
         "r0": {
             "static_routes": [
                 {
-                    "network": NETWORK['ipv4'][0],
+                    "network": NETWORK["ipv4"][0],
                     "no_of_ip": 5,
-                    "next_hop": 'Null0',
+                    "next_hop": "Null0",
                 }
             ]
         }
     }
     result = create_static_routes(tgen, input_dict)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    ospf_red_r0 = {
-        "r0": {
-            "ospf": {
-                "redistribute": [{
-                    "redist_type": "static"
-                    }]
-            }
-        }
-    }
+    ospf_red_r0 = {"r0": {"ospf": {"redistribute": [{"redist_type": "static"}]}}}
     result = create_router_ospf(tgen, topo, ospf_red_r0)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Verify OSPF neighbors after base config is done.")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                      " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step("Verify that route is advertised to R1.")
-    dut = 'r1'
-    protocol = 'ospf'
-    nh = topo['routers']['r0']['links']['r1']['ipv4'].split('/')[0]
+    dut = "r1"
+    protocol = "ospf"
+    nh = topo["routers"]["r0"]["links"]["r1"]["ipv4"].split("/")[0]
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(
-        tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Kill OSPFd daemon on R0.")
     kill_router_daemons(tgen, "r0", ["ospfd"])
 
     step("Verify OSPF neighbors are down after killing ospfd in R0")
-    dut = 'r0'
+    dut = "r0"
     # Api call verify whether OSPF is converged
-    ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut,
-        expected=False)
-    assert ospf_covergence is not True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut, expected=False)
+    assert ospf_covergence is not True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step("Verify that route advertised to R1 are deleted from RIB and FIB.")
-    dut = 'r1'
-    protocol = 'ospf'
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, expected=False)
     assert result is not True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+        tc_name, result
+    )
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-        expected=False)
+    result = verify_rib(
+        tgen, "ipv4", dut, input_dict, protocol=protocol, expected=False
+    )
     assert result is not True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+        tc_name, result
+    )
 
     step("Bring up OSPFd daemon on R0.")
     start_router_daemons(tgen, "r0", ["ospfd"])
@@ -269,33 +266,32 @@ def test_ospf_chaos_tc31_p1(request):
     step("Verify OSPF neighbors are up after bringing back ospfd in R0")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step(
         "All the neighbours are up and routes are installed before the"
-        " restart. Verify OSPF route table and ip route table.")
-    dut = 'r1'
-    protocol = 'ospf'
+        " restart. Verify OSPF route table and ip route table."
+    )
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Kill OSPFd daemon on R1.")
     kill_router_daemons(tgen, "r1", ["ospfd"])
 
     step("Verify OSPF neighbors are down after killing ospfd in R1")
-    dut = 'r1'
+    dut = "r1"
     # Api call verify whether OSPF is converged
-    ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut,
-        expected=False)
-    assert ospf_covergence is not True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    ospf_covergence = verify_ospf_neighbor(tgen, topo, dut=dut, expected=False)
+    assert ospf_covergence is not True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step("Bring up OSPFd daemon on R1.")
     start_router_daemons(tgen, "r1", ["ospfd"])
@@ -303,23 +299,22 @@ def test_ospf_chaos_tc31_p1(request):
     step("Verify OSPF neighbors are up after bringing back ospfd in R1")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                      " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step(
         "All the neighbours are up and routes are installed before the"
-        " restart. Verify OSPF route table and ip route table.")
+        " restart. Verify OSPF route table and ip route table."
+    )
 
-    dut = 'r1'
-    protocol = 'ospf'
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     write_test_footer(tc_name)
 
@@ -335,104 +330,91 @@ def test_ospf_chaos_tc32_p1(request):
 
     step(
         "Create static routes(10.0.20.1/32) in R1 and redistribute "
-        "to OSPF using route map.")
+        "to OSPF using route map."
+    )
 
     # Create Static routes
     input_dict = {
         "r0": {
             "static_routes": [
                 {
-                    "network": NETWORK['ipv4'][0],
+                    "network": NETWORK["ipv4"][0],
                     "no_of_ip": 5,
-                    "next_hop": 'Null0',
+                    "next_hop": "Null0",
                 }
             ]
         }
     }
     result = create_static_routes(tgen, input_dict)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    ospf_red_r0 = {
-        "r0": {
-            "ospf": {
-                "redistribute": [{
-                    "redist_type": "static"
-                    }]
-            }
-        }
-    }
+    ospf_red_r0 = {"r0": {"ospf": {"redistribute": [{"redist_type": "static"}]}}}
     result = create_router_ospf(tgen, topo, ospf_red_r0)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Verify OSPF neighbors after base config is done.")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step("Verify that route is advertised to R1.")
-    dut = 'r1'
-    protocol = 'ospf'
+    dut = "r1"
+    protocol = "ospf"
 
-    nh = topo['routers']['r0']['links']['r1']['ipv4'].split('/')[0]
+    nh = topo["routers"]["r0"]["links"]["r1"]["ipv4"].split("/")[0]
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Restart frr on R0")
-    stop_router(tgen, 'r0')
-    start_router(tgen, 'r0')
+    stop_router(tgen, "r0")
+    start_router(tgen, "r0")
 
     step("Verify OSPF neighbors are up after restarting R0")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step(
         "All the neighbours are up and routes are installed before the"
-        " restart. Verify OSPF route table and ip route table.")
-    dut = 'r1'
-    protocol = 'ospf'
+        " restart. Verify OSPF route table and ip route table."
+    )
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Restart frr on R1")
-    stop_router(tgen, 'r1')
-    start_router(tgen, 'r1')
+    stop_router(tgen, "r1")
+    start_router(tgen, "r1")
 
     step("Verify OSPF neighbors are up after restarting R1")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step(
         "All the neighbours are up and routes are installed before the"
-        " restart. Verify OSPF route table and ip route table.")
-    dut = 'r1'
-    protocol = 'ospf'
+        " restart. Verify OSPF route table and ip route table."
+    )
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     write_test_footer(tc_name)
 
@@ -453,70 +435,62 @@ def test_ospf_chaos_tc34_p1(request):
 
     step(
         "Create static routes(10.0.20.1/32) in R1 and redistribute "
-        "to OSPF using route map.")
+        "to OSPF using route map."
+    )
 
     # Create Static routes
     input_dict = {
         "r0": {
             "static_routes": [
                 {
-                    "network": NETWORK['ipv4'][0],
+                    "network": NETWORK["ipv4"][0],
                     "no_of_ip": 5,
-                    "next_hop": 'Null0',
+                    "next_hop": "Null0",
                 }
             ]
         }
     }
     result = create_static_routes(tgen, input_dict)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    ospf_red_r0 = {
-        "r0": {
-            "ospf": {
-                "redistribute": [{
-                    "redist_type": "static"
-                    }]
-            }
-        }
-    }
+    ospf_red_r0 = {"r0": {"ospf": {"redistribute": [{"redist_type": "static"}]}}}
     result = create_router_ospf(tgen, topo, ospf_red_r0)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Verify OSPF neighbors after base config is done.")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step("Verify that route is advertised to R1.")
-    dut = 'r1'
-    protocol = 'ospf'
-    nh = topo['routers']['r0']['links']['r1']['ipv4'].split('/')[0]
+    dut = "r1"
+    protocol = "ospf"
+    nh = topo["routers"]["r0"]["links"]["r1"]["ipv4"].split("/")[0]
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Kill staticd daemon on R0.")
     kill_router_daemons(tgen, "r0", ["staticd"])
 
     step("Verify that route advertised to R1 are deleted from RIB and FIB.")
-    dut = 'r1'
-    protocol = 'ospf'
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, expected=False)
     assert result is not True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+        tc_name, result
+    )
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-            expected=False)
+    result = verify_rib(
+        tgen, "ipv4", dut, input_dict, protocol=protocol, expected=False
+    )
     assert result is not True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+        tc_name, result
+    )
 
     step("Bring up staticd daemon on R0.")
     start_router_daemons(tgen, "r0", ["staticd"])
@@ -524,22 +498,21 @@ def test_ospf_chaos_tc34_p1(request):
     step("Verify OSPF neighbors are up after bringing back ospfd in R0")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step(
         "All the neighbours are up and routes are installed before the"
-        " restart. Verify OSPF route table and ip route table.")
-    dut = 'r1'
-    protocol = 'ospf'
+        " restart. Verify OSPF route table and ip route table."
+    )
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     step("Kill staticd daemon on R1.")
     kill_router_daemons(tgen, "r1", ["staticd"])
@@ -550,23 +523,22 @@ def test_ospf_chaos_tc34_p1(request):
     step("Verify OSPF neighbors are up after bringing back ospfd in R1")
     # Api call verify whether OSPF is converged
     ospf_covergence = verify_ospf_neighbor(tgen, topo)
-    assert ospf_covergence is True, ("setup_module :Failed \n Error:"
-                                          " {}".format(ospf_covergence))
+    assert ospf_covergence is True, "setup_module :Failed \n Error:" " {}".format(
+        ospf_covergence
+    )
 
     step(
         "All the neighbours are up and routes are installed before the"
-        " restart. Verify OSPF route table and ip route table.")
+        " restart. Verify OSPF route table and ip route table."
+    )
 
-    dut = 'r1'
-    protocol = 'ospf'
+    dut = "r1"
+    protocol = "ospf"
     result = verify_ospf_rib(tgen, dut, input_dict, next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
-    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol,
-    next_hop=nh)
-    assert result is True, "Testcase {} : Failed \n Error: {}".format(
-        tc_name, result)
+    result = verify_rib(tgen, "ipv4", dut, input_dict, protocol=protocol, next_hop=nh)
+    assert result is True, "Testcase {} : Failed \n Error: {}".format(tc_name, result)
 
     write_test_footer(tc_name)
 

tests/topotests/ospf_basic_functionality/test_ospf_p2mp.py

@@ -146,7 +146,6 @@ def setup_module(mod):
     if tgen.routers_have_failure():
         pytest.skip(tgen.errors)
 
-
     logger.info("Running setup_module() done")
 
 
@@ -397,10 +396,7 @@ def test_ospf_p2mp_tc1_p0(request):
             "links": {
                 "r3": {
                     "interface": topo["routers"]["r0"]["links"]["r3"]["interface"],
-                    "ospf": {
-                        "area": "0.0.0.0",
-                        "networkType":"POINTOMULTIPOINT"
-                    },
+                    "ospf": {"area": "0.0.0.0", "networkType": "POINTOMULTIPOINT"},
                 }
             }
         }

tests/topotests/pbr-topo1/test_pbr_topo1.py

@@ -82,6 +82,7 @@ class NetworkTopo(Topo):
 ##
 #####################################################
 
+
 def setup_module(module):
     "Setup topology"
     tgen = Topogen(NetworkTopo, module.__name__)

tests/topotests/pim-basic/test_pim.py

@@ -45,6 +45,7 @@ from mininet.topo import Topo
 
 pytestmark = [pytest.mark.pimd]
 
+
 class PIMTopo(Topo):
     def build(self, *_args, **_opts):
         "Build function"

tests/topotests/pytest.ini

@@ -24,6 +24,7 @@ markers =
 	sharpd: Tests that run against SHARPD
 	staticd: Tests that run against STATICD
 	vrrpd: Tests that run against VRRPD
+	snmp: Tests that run against snmp changes
 
 [topogen]
 # Default configuration values

tests/topotests/simple-snmp-test/test_simple_snmp.py

@@ -46,6 +46,8 @@ from lib.snmptest import SnmpTester
 # Required to instantiate the topology builder class.
 from mininet.topo import Topo
 
+pytestmark = [pytest.mark.bgpd, pytest.mark.isisd, pytest.mark.snmp]
+
 
 class TemplateTopo(Topo):
     "Test topology builder"

tests/topotests/static_routing_with_ebgp/test_static_routes_topo1_ebgp.py

@@ -35,6 +35,7 @@ import time
 import os
 import pytest
 import platform
+
 # Save the Current Working Directory to find configuration files.
 CWD = os.path.dirname(os.path.realpath(__file__))
 sys.path.append(os.path.join(CWD, "../"))
@@ -44,6 +45,7 @@ sys.path.append(os.path.join(CWD, "../lib/"))
 from mininet.topo import Topo
 from lib.topogen import Topogen, get_topogen
 from lib.topotest import version_cmp
+
 # Import topoJson from lib, to create topology and initial configuration
 from lib.common_config import (
     start_topology,
@@ -121,9 +123,11 @@ def setup_module(mod):
     # Creating configuration from JSON
     build_config_from_json(tgen, topo)
 
-    if version_cmp(platform.release(), '4.19') < 0:
-        error_msg = ('These tests will not run. (have kernel "{}", '
-            'requires kernel >= 4.19)'.format(platform.release()))
+    if version_cmp(platform.release(), "4.19") < 0:
+        error_msg = (
+            'These tests will not run. (have kernel "{}", '
+            "requires kernel >= 4.19)".format(platform.release())
+        )
         pytest.skip(error_msg)
 
     # Checking BGP convergence

tests/topotests/static_routing_with_ebgp/test_static_routes_topo2_ebgp.py

@@ -163,9 +163,11 @@ def setup_module(mod):
     # Creating configuration from JSON
     build_config_from_json(tgen, topo)
 
-    if version_cmp(platform.release(), '4.19') < 0:
-        error_msg = ('These tests will not run. (have kernel "{}", '
-            'requires kernel >= 4.19)'.format(platform.release()))
+    if version_cmp(platform.release(), "4.19") < 0:
+        error_msg = (
+            'These tests will not run. (have kernel "{}", '
+            "requires kernel >= 4.19)".format(platform.release())
+        )
         pytest.skip(error_msg)
 
     # Checking BGP convergence
@@ -854,12 +856,12 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc6_ebgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
-
     write_test_footer(tc_name)
 
 
@@ -1129,9 +1131,10 @@ def test_static_route_8nh_diff_AD_ebgp_ecmp_p1_tc8_ebgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
     write_test_footer(tc_name)
@@ -1339,7 +1342,15 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc10_ebgp(request):
         " value and all the nexthop populated in RIB and FIB again"
     )
     for addr_type in ADDR_TYPES:
-        input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type],}]}}
+        input_dict_4 = {
+            "r2": {
+                "static_routes": [
+                    {
+                        "network": PREFIX1[addr_type],
+                    }
+                ]
+            }
+        }
         nh = NEXT_HOP_IP["nh1"][addr_type]
         result = verify_rib(
             tgen, addr_type, dut, input_dict_4, next_hop=nh, protocol=protocol, fib=True
@@ -1468,9 +1479,10 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc10_ebgp(request):
                 protocol=protocol,
                 fib=True,
             )
-            assert result is True, (
-                "Testcase {} : Failed \nError: Route "
-                " is missing in RIB".format(tc_name)
+            assert (
+                result is True
+            ), "Testcase {} : Failed \nError: Route " " is missing in RIB".format(
+                tc_name
             )
 
     write_test_footer(tc_name)

tests/topotests/static_routing_with_ebgp/test_static_routes_topo4_ebgp.py

@@ -88,6 +88,7 @@ NEXT_HOP_IP = {}
 
 pytestmark = [pytest.mark.bgpd, pytest.mark.staticd]
 
+
 class CreateTopo(Topo):
     """
     Test CreateTopo - topology 1.
@@ -126,9 +127,11 @@ def setup_module(mod):
     # Creating configuration from JSON
     build_config_from_json(tgen, topo)
 
-    if version_cmp(platform.release(), '4.19') < 0:
-        error_msg = ('These tests will not run. (have kernel "{}", '
-            'requires kernel >= 4.19)'.format(platform.release()))
+    if version_cmp(platform.release(), "4.19") < 0:
+        error_msg = (
+            'These tests will not run. (have kernel "{}", '
+            "requires kernel >= 4.19)".format(platform.release())
+        )
         pytest.skip(error_msg)
 
     # Checking BGP convergence

tests/topotests/static_routing_with_ibgp/test_static_routes_topo1_ibgp.py

@@ -125,9 +125,11 @@ def setup_module(mod):
     # Creating configuration from JSON
     build_config_from_json(tgen, topo)
 
-    if version_cmp(platform.release(), '4.19') < 0:
-        error_msg = ('These tests will not run. (have kernel "{}", '
-            'requires kernel >= 4.19)'.format(platform.release()))
+    if version_cmp(platform.release(), "4.19") < 0:
+        error_msg = (
+            'These tests will not run. (have kernel "{}", '
+            "requires kernel >= 4.19)".format(platform.release())
+        )
         pytest.skip(error_msg)
 
     # Checking BGP convergence

tests/topotests/static_routing_with_ibgp/test_static_routes_topo2_ibgp.py

@@ -165,9 +165,11 @@ def setup_module(mod):
     # Creating configuration from JSON
     build_config_from_json(tgen, topo)
 
-    if version_cmp(platform.release(), '4.19') < 0:
-        error_msg = ('These tests will not run. (have kernel "{}", '
-            'requires kernel >= 4.19)'.format(platform.release()))
+    if version_cmp(platform.release(), "4.19") < 0:
+        error_msg = (
+            'These tests will not run. (have kernel "{}", '
+            "requires kernel >= 4.19)".format(platform.release())
+        )
         pytest.skip(error_msg)
 
     # Checking BGP convergence
@@ -884,9 +886,10 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc6_ibgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
     step("BGP neighbor remove and add")
@@ -907,9 +910,10 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc6_ibgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
     dut = "r3"
@@ -917,9 +921,10 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc6_ibgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
     step("Remove the redistribute static knob")
@@ -1274,9 +1279,10 @@ def test_static_route_8nh_diff_AD_ibgp_ecmp_p1_tc7_ibgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
     step("BGP neighbor remove and add")
@@ -1297,9 +1303,10 @@ def test_static_route_8nh_diff_AD_ibgp_ecmp_p1_tc7_ibgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
     dut = "r3"
@@ -1307,9 +1314,10 @@ def test_static_route_8nh_diff_AD_ibgp_ecmp_p1_tc7_ibgp(request):
     for addr_type in ADDR_TYPES:
         input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type]}]}}
         result = verify_rib(tgen, addr_type, dut, input_dict_4, protocol=protocol)
-        assert result is True, (
-            "Testcase {} : Failed \n"
-            "Error: Routes are still present in RIB".format(tc_name)
+        assert (
+            result is True
+        ), "Testcase {} : Failed \n" "Error: Routes are still present in RIB".format(
+            tc_name
         )
 
     step("Remove the redistribute static knob")
@@ -1557,7 +1565,15 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc10_ibgp(request):
         " value and all the nexthop populated in RIB and FIB again"
     )
     for addr_type in ADDR_TYPES:
-        input_dict_4 = {"r2": {"static_routes": [{"network": PREFIX1[addr_type],}]}}
+        input_dict_4 = {
+            "r2": {
+                "static_routes": [
+                    {
+                        "network": PREFIX1[addr_type],
+                    }
+                ]
+            }
+        }
         nh = NEXT_HOP_IP["nh1"][addr_type]
         result = verify_rib(
             tgen, addr_type, dut, input_dict_4, next_hop=nh, protocol=protocol, fib=True
@@ -1686,9 +1702,10 @@ def test_static_route_8nh_diff_AD_bgp_ecmp_p1_tc10_ibgp(request):
                 protocol=protocol,
                 fib=True,
             )
-            assert result is True, (
-                "Testcase {} : Failed \nError: Route "
-                " is missing in RIB".format(tc_name)
+            assert (
+                result is True
+            ), "Testcase {} : Failed \nError: Route " " is missing in RIB".format(
+                tc_name
             )
 
     step("Remove the redistribute static knob")

tests/topotests/static_routing_with_ibgp/test_static_routes_topo3_ibgp.py

@@ -149,9 +149,11 @@ def setup_module(mod):
     # Creating configuration from JSON
     build_config_from_json(tgen, topo)
 
-    if version_cmp(platform.release(), '4.19') < 0:
-        error_msg = ('These tests will not run. (have kernel "{}", '
-            'requires kernel >= 4.19)'.format(platform.release()))
+    if version_cmp(platform.release(), "4.19") < 0:
+        error_msg = (
+            'These tests will not run. (have kernel "{}", '
+            "requires kernel >= 4.19)".format(platform.release())
+        )
         pytest.skip(error_msg)
 
     # Checking BGP convergence

tests/topotests/static_routing_with_ibgp/test_static_routes_topo4_ibgp.py

@@ -69,6 +69,7 @@ from lib.bgp import (
 )
 from lib.topojson import build_topo_from_json, build_config_from_json
 from lib.topotest import version_cmp
+
 # Reading the data from JSON File for topology creation
 jsonFile = "{}/static_routes_topo4_ibgp.json".format(CWD)
 try:
@@ -85,6 +86,7 @@ NEXT_HOP_IP = {}
 
 pytestmark = [pytest.mark.bgpd, pytest.mark.staticd]
 
+
 class CreateTopo(Topo):
     """
     Test CreateTopo - topology 1.
@@ -123,9 +125,11 @@ def setup_module(mod):
     # Creating configuration from JSON
     build_config_from_json(tgen, topo)
 
-    if version_cmp(platform.release(), '4.19') < 0:
-        error_msg = ('These tests will not run. (have kernel "{}", '
-            'requires kernel >= 4.19)'.format(platform.release()))
+    if version_cmp(platform.release(), "4.19") < 0:
+        error_msg = (
+            'These tests will not run. (have kernel "{}", '
+            "requires kernel >= 4.19)".format(platform.release())
+        )
         pytest.skip(error_msg)
 
     # Checking BGP convergence

tests/topotests/zebra_rib/test_zebra_rib.py

@@ -76,9 +76,11 @@ def setup_module(mod):
     router_list = tgen.routers()
     for rname, router in router_list.items():
         router.load_config(
-            TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname)))
+            TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
+        )
         router.load_config(
-            TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname)))
+            TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname))
+        )
 
     # Initialize all routers.
     tgen.start_router()
@@ -159,6 +161,7 @@ def test_zebra_kernel_override():
     _, result = topotest.run_and_expect(test_func, None, count=2, wait=0.5)
     assert result is None, '"r1" JSON output mismatches'
 
+
 def test_route_map_usage():
     "Test that FRR only reruns over routes associated with the routemap"
     logger.info("Test that FRR runs on selected re's on route-map changes")
@@ -174,7 +177,9 @@ def test_route_map_usage():
     r1.vtysh_cmd("conf\nroute-map static permit 10\nset src 192.168.215.1")
     r1.vtysh_cmd("conf\naccess-list 5 seq 5 permit 10.0.0.44/32")
     r1.vtysh_cmd("conf\naccess-list 10 seq 5 permit 10.0.1.0/24")
-    r1.vtysh_cmd("conf\nroute-map sharp permit 10\nmatch ip address 10\nset src 192.168.214.1")
+    r1.vtysh_cmd(
+        "conf\nroute-map sharp permit 10\nmatch ip address 10\nset src 192.168.214.1"
+    )
     r1.vtysh_cmd("conf\nroute-map sharp permit 20\nset src 192.168.213.1")
     r1.vtysh_cmd("conf\nip protocol static route-map static")
     r1.vtysh_cmd("conf\nip protocol sharp route-map sharp")
@@ -186,47 +191,57 @@ def test_route_map_usage():
 
     static_rmapfile = "%s/r1/static_rmap.ref" % (thisDir)
     expected = open(static_rmapfile).read().rstrip()
-    expected = ('\n'.join(expected.splitlines()) + '\n').rstrip()
+    expected = ("\n".join(expected.splitlines()) + "\n").rstrip()
     actual = r1.vtysh_cmd("show route-map static")
-    actual = ('\n'.join(actual.splitlines()) + '\n').rstrip()
-    logger.info("Does the show route-map static command run the correct number of times")
+    actual = ("\n".join(actual.splitlines()) + "\n").rstrip()
+    logger.info(
+        "Does the show route-map static command run the correct number of times"
+    )
 
-    diff = topotest.get_textdiff(actual, expected,
-                                 title1 = "Actual Route-map output",
-                                 title2 = "Expected Route-map output")
+    diff = topotest.get_textdiff(
+        actual,
+        expected,
+        title1="Actual Route-map output",
+        title2="Expected Route-map output",
+    )
     if diff:
         logger.info("Actual:")
         logger.info(actual)
         logger.info("Expected:")
         logger.info(expected)
         srun = r1.vtysh_cmd("show run")
-        srun = ('\n'.join(srun.splitlines()) + '\n').rstrip()
+        srun = ("\n".join(srun.splitlines()) + "\n").rstrip()
         logger.info("Show run")
         logger.info(srun)
         assert 0, "r1 static route processing:\n"
 
     sharp_rmapfile = "%s/r1/sharp_rmap.ref" % (thisDir)
     expected = open(sharp_rmapfile).read().rstrip()
-    expected = ('\n'.join(expected.splitlines()) + '\n').rstrip()
+    expected = ("\n".join(expected.splitlines()) + "\n").rstrip()
     actual = r1.vtysh_cmd("show route-map sharp")
-    actual = ('\n'.join(actual.splitlines()) + '\n').rstrip()
+    actual = ("\n".join(actual.splitlines()) + "\n").rstrip()
     logger.info("Does the show route-map sharp command run the correct number of times")
 
-    diff = topotest.get_textdiff(actual, expected,
-                                 title1 = "Actual Route-map output",
-                                 title2 = "Expected Route-map output")
+    diff = topotest.get_textdiff(
+        actual,
+        expected,
+        title1="Actual Route-map output",
+        title2="Expected Route-map output",
+    )
     if diff:
         logger.info("Actual:")
         logger.info(actual)
         logger.info("Expected:")
         logger.info(expected)
         srun = r1.vtysh_cmd("show run")
-        srun = ('\n'.join(srun.splitlines()) + '\n').rstrip()
+        srun = ("\n".join(srun.splitlines()) + "\n").rstrip()
         logger.info("Show run:")
         logger.info(srun)
         assert 0, "r1 sharp route-map processing:\n"
 
-    logger.info("Add a extension to the static route-map to see the static route go away")
+    logger.info(
+        "Add a extension to the static route-map to see the static route go away"
+    )
     r1.vtysh_cmd("conf\nroute-map sharp deny 5\nmatch ip address 5")
     sleep(2)
     # we are only checking the kernel here as that this will give us the implied
@@ -236,9 +251,9 @@ def test_route_map_usage():
     logger.info("Test that the routes installed are correct")
     sharp_ipfile = "%s/r1/iproute.ref" % (thisDir)
     expected = open(sharp_ipfile).read().rstrip()
-    expected = ('\n'.join(expected.splitlines()) + '\n').rstrip()
+    expected = ("\n".join(expected.splitlines()) + "\n").rstrip()
     actual = r1.run("ip route show")
-    actual = ('\n'.join(actual.splitlines()) + '\n').rstrip()
+    actual = ("\n".join(actual.splitlines()) + "\n").rstrip()
     actual = re.sub(r" nhid [0-9][0-9]", "", actual)
     actual = re.sub(r" proto sharp", " proto XXXX", actual)
     actual = re.sub(r" proto static", " proto XXXX", actual)
@@ -250,9 +265,9 @@ def test_route_map_usage():
     actual = re.sub(r"  proto XXXX  ", " proto XXXX ", actual)
     actual = re.sub(r"  metric", " metric", actual)
     actual = re.sub(r" link  ", " link ", actual)
-    diff = topotest.get_textdiff(actual, expected,
-                                 title1 = "Actual ip route show",
-                                 title2 = "Expected ip route show")
+    diff = topotest.get_textdiff(
+        actual, expected, title1="Actual ip route show", title2="Expected ip route show"
+    )
 
     if diff:
         logger.info("Actual:")
@@ -260,11 +275,12 @@ def test_route_map_usage():
         logger.info("Expected:")
         logger.info(expected)
         srun = r1.vtysh_cmd("show run")
-        srun = ('\n'.join(srun.splitlines()) + '\n').rstrip()
+        srun = ("\n".join(srun.splitlines()) + "\n").rstrip()
         logger.info("Show run:")
         logger.info(srun)
         assert 0, "r1 ip route show is not correct:"
 
+
 def test_memory_leak():
     "Run the memory leak test and report results."
     tgen = get_topogen()