topotests: update test cases about srv6 locator deletion

Before this PR, in case of get locator chunk zapi from
zclient, zebra precreated a down state locator and set
the chunk ownership. After this PR, this is no longer
done, and chunks are no longer automatically generated.

In this commit, we will make a test update to check the
corresponding detailed behavior.

Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>

tests/topotests/srv6_locator/expected_chunks4.json

@@ -1,6 +1,2 @@
 [
-  {
-    "name": "loc3",
-    "chunks": []
-  }
 ]

tests/topotests/srv6_locator/expected_chunks5.json

@@ -1,8 +1,2 @@
 [
-  {
-    "name": "loc3",
-    "chunks": [
-      "2001:db8:3:3::/64"
-    ]
-  }
 ]

tests/topotests/srv6_locator/expected_chunks6.json

@@ -0,0 +1,2 @@
+[
+]

tests/topotests/srv6_locator/expected_locators4.json

@@ -23,11 +23,13 @@
       ]
     },
     {
-      "name":"loc3",
-      "statusUp":false,
-      "chunks":[
+      "name": "loc3",
+      "prefix": "2001:db8:3:3::/64",
+      "statusUp": true,
+      "chunks": [
         {
-          "proto":"sharp"
+          "prefix": "2001:db8:3:3::/64",
+          "proto": "system"
         }
       ]
     }

tests/topotests/srv6_locator/expected_locators5.json

@@ -1,16 +1,5 @@
 {
   "locators":[
-    {
-      "name": "loc1",
-      "prefix": "2001:db8:1:1::/64",
-      "statusUp": true,
-      "chunks": [
-        {
-          "prefix": "2001:db8:1:1::/64",
-          "proto": "system"
-        }
-      ]
-    },
     {
       "name": "loc2",
       "prefix": "2001:db8:2:2::/64",
@@ -29,7 +18,7 @@
       "chunks":[
         {
           "prefix": "2001:db8:3:3::/64",
-          "proto": "sharp"
+          "proto": "system"
         }
       ]
     }

tests/topotests/srv6_locator/expected_locators6.json

@@ -0,0 +1,5 @@
+{
+  "locators":[
+  ]
+}
+

tests/topotests/srv6_locator/test_srv6_locator.py

@@ -102,6 +102,10 @@ def test_srv6():
         success, result = topotest.run_and_expect(func, None, count=5, wait=0.5)
         assert result is None, "Failed"
 
+    # FOR DEVELOPER:
+    # If you want to stop some specific line and start interactive shell,
+    # please use tgen.mininet_cli() to start it.
+
     logger.info("Test1 for Locator Configuration")
     check_srv6_locator(router, "expected_locators1.json")
     check_sharpd_chunk(router, "expected_chunks1.json")
@@ -116,12 +120,7 @@ def test_srv6():
     check_srv6_locator(router, "expected_locators3.json")
     check_sharpd_chunk(router, "expected_chunks3.json")
 
-    logger.info("Test4 get chunk for non-exist locator by zclient")
-    router.vtysh_cmd("sharp srv6-manager get-locator-chunk loc3")
-    check_srv6_locator(router, "expected_locators4.json")
-    check_sharpd_chunk(router, "expected_chunks4.json")
-
-    logger.info("Test5 Test for Zclient. after locator loc3 was configured")
+    logger.info("Test4 additional locator loc3")
     router.vtysh_cmd(
         """
         configure terminal
@@ -132,9 +131,33 @@ def test_srv6():
              prefix 2001:db8:3:3::/64
         """
     )
+    check_srv6_locator(router, "expected_locators4.json")
+    check_sharpd_chunk(router, "expected_chunks4.json")
+
+    logger.info("Test5 delete locator and chunk is released automatically")
+    router.vtysh_cmd(
+        """
+        configure terminal
+         segment-routing
+          srv6
+           locators
+            no locator loc1
+        """
+    )
     check_srv6_locator(router, "expected_locators5.json")
     check_sharpd_chunk(router, "expected_chunks5.json")
 
+    logger.info("Test6 delete srv6 all configuration")
+    router.vtysh_cmd(
+        """
+        configure terminal
+         segment-routing
+          no srv6
+        """
+    )
+    check_srv6_locator(router, "expected_locators6.json")
+    check_sharpd_chunk(router, "expected_chunks6.json")
+
 
 if __name__ == "__main__":
     args = ["-s"] + sys.argv[1:]