tests: add test to validate 4-byte ecomm parsing

Signed-off-by: Trey Aspelund <taspelund@nvidia.com>

tests/topotests/bgp_route_origin_parser/pe1/bgpd.conf

@@ -0,0 +1,2 @@
+router bgp 65001
+ neighbor 192.168.2.1 remote-as external

tests/topotests/bgp_route_origin_parser/test_bgp_route_origin_parser.py

@@ -0,0 +1,129 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# April 03 2023, Trey Aspelund <taspelund@nvidia.com>
+#
+# Copyright (C) 2023 NVIDIA Corporation
+#
+# Test if the CLI parser for RT/SoO ecoms correctly
+# constrain user input to valid 4-byte ASN values.
+#
+
+import os
+import sys
+import json
+import pytest
+import functools
+
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(CWD, "../"))
+
+# pylint: disable=C0413
+from lib import topotest
+from lib.topogen import Topogen, TopoRouter, get_topogen
+from lib.common_config import step
+
+pytestmark = [pytest.mark.bgpd]
+
+
+def build_topo(tgen):
+    tgen.add_router("pe1")
+
+
+def setup_module(mod):
+    tgen = Topogen(build_topo, mod.__name__)
+    tgen.start_topology()
+    pe1 = tgen.gears["pe1"]
+    pe1.load_config(TopoRouter.RD_BGP, os.path.join(CWD, "pe1/bgpd.conf"))
+    tgen.start_router()
+
+
+def teardown_module(mod):
+    tgen = get_topogen()
+    tgen.stop_topology()
+
+
+def test_bgp_route_origin_parser():
+    tgen = get_topogen()
+
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    pe1 = tgen.gears["pe1"]
+
+    def _invalid_soo_accepted():
+        pe1.vtysh_cmd(
+            """
+        configure terminal
+        router bgp 65001
+         address-family ipv4 unicast
+          neighbor 192.168.2.1 soo 4294967296:65
+        """
+        )
+        run_cfg = pe1.vtysh_cmd("show run")
+        return "soo" in run_cfg
+
+    def _max_soo_accepted():
+        pe1.vtysh_cmd(
+            """
+        configure terminal
+        router bgp 65001
+         address-family ipv4 unicast
+          neighbor 192.168.2.1 soo 4294967295:65
+            """
+        )
+        run_cfg = pe1.vtysh_cmd("show run")
+        return "soo 4294967295:65" in run_cfg
+
+    def _invalid_rt_accepted():
+        pe1.vtysh_cmd(
+            """
+        configure terminal
+        router bgp 65001
+         address-family ipv4 unicast
+          rt vpn both 4294967296:65
+        """
+        )
+        run_cfg = pe1.vtysh_cmd("show run")
+        return "rt vpn" in run_cfg
+
+    def _max_rt_accepted():
+        pe1.vtysh_cmd(
+            """
+        configure terminal
+        router bgp 65001
+         address-family ipv4 unicast
+          rt vpn both 4294967295:65
+            """
+        )
+        run_cfg = pe1.vtysh_cmd("show run")
+        return "rt vpn both 4294967295:65" in run_cfg
+
+    step(
+        "Configure invalid 4-byte value SoO (4294967296:65), this should not be accepted"
+    )
+    test_func = functools.partial(_invalid_soo_accepted)
+    _, result = topotest.run_and_expect(test_func, False, count=30, wait=0.5)
+    assert result is False, "invalid 4-byte value of SoO accepted"
+
+    step("Configure max 4-byte value SoO (4294967295:65), this should be accepted")
+    test_func = functools.partial(_max_soo_accepted)
+    _, result = topotest.run_and_expect(test_func, True, count=30, wait=0.5)
+    assert result is True, "max 4-byte value of SoO not accepted"
+
+    step(
+        "Configure invalid 4-byte value RT (4294967296:65), this should not be accepted"
+    )
+    test_func = functools.partial(_invalid_rt_accepted)
+    _, result = topotest.run_and_expect(test_func, False, count=30, wait=0.5)
+    assert result is False, "invalid 4-byte value of RT accepted"
+
+    step("Configure max 4-byte value RT (4294967295:65), this should be accepted")
+    test_func = functools.partial(_max_rt_accepted)
+    _, result = topotest.run_and_expect(test_func, True, count=30, wait=0.5)
+    assert result is True, "max 4-byte value of RT not accepted"
+
+
+if __name__ == "__main__":
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))