diff --git a/tests/draft2019-09/meta/core.json b/tests/draft2019-09/meta/core.json
index 5908b754..0bf9d7d3 100644
--- a/tests/draft2019-09/meta/core.json
+++ b/tests/draft2019-09/meta/core.json
@@ -386,6 +386,32 @@
           "$anchor": "himom@"
         },
         "valid": false
+      },
+      {
+        "description": "Fragment syntax disallowed",
+        "data": {
+          "$ref": "#foo",
+          "$defs": {
+            "A": {
+              "$anchor": "#foo",
+              "type": "integer"
+            }
+          }
+        },
+        "valid": false
+      },
+      {
+        "description": "Invalid characters disallowed",
+        "data": {
+          "$ref": "#/a/b",
+          "$defs": {
+            "A": {
+              "$anchor": "/a/b",
+              "type": "integer"
+            }
+          }
+        },
+        "valid": false
       }
     ]
   },