test(draft2020-12): add boundary coverage for maxContains = 0

Author: abhi-03-kh

tests/draft2020-12/maxContains.json

@@ -98,5 +98,25 @@
                 "valid": false
             }
         ]
+    },
+    {
+        "description": "maxContains = 0 with contains",
+        "schema": {
+            "$schema": "https://json-schema.org/draft/2020-12/schema",
+            "contains": {"const": 1},
+            "maxContains": 0
+        },
+        "tests": [
+            {
+                "description": "empty array fails due to default minContains",
+                "data": [ ],
+                "valid": false
+            },
+            {
+                "description": "array with matching element fails due to maxContains",
+                "data": [ 1 ],
+                "valid": false
+            }
+        ]
     }
 ]