selftests/tc-testings: add nat action deleting test case

Test b811: Delete nat action with valid index
Test a521: Delete nat action with invalid index
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/tc-testing/tc-tests/actions/nat.json

@@ -614,5 +614,55 @@
         "teardown": [
             "$TC actions flush action nat"
         ]
+    },
+    {
+        "id": "b811",
+        "name": "Delete nat action with valid index",
+        "category": [
+            "actions",
+            "nat"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action nat",
+                0,
+                1,
+                255
+            ],
+            "$TC actions add action nat ingress 1.1.1.1 2.2.2.2 drop index 20"
+        ],
+        "cmdUnderTest": "$TC actions del action nat index 20",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions ls action nat index 20",
+        "matchPattern": "action order [0-9]+:  nat ingress 1.1.1.1/32 2.2.2.2 drop.*index 20 ref",
+        "matchCount": "0",
+        "teardown": [
+            "$TC actions flush action nat"
+        ]
+    },
+    {
+        "id": "a521",
+        "name": "Delete nat action with invalid index",
+        "category": [
+            "actions",
+            "nat"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action nat",
+                0,
+                1,
+                255
+            ],
+            "$TC actions add action nat ingress 1.1.1.1 2.2.2.2 drop index 20"
+        ],
+        "cmdUnderTest": "$TC actions del action nat index 10",
+        "expExitCode": "255",
+        "verifyCmd": "$TC actions ls action nat index 20",
+        "matchPattern": "action order [0-9]+:  nat ingress 1.1.1.1/32 2.2.2.2 drop.*index 20 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action nat"
+        ]
     }
 ]