test(transport): add failing unresolved endpoint contract

Author: loong10k

src/test/java/io/github/easy4j/hermes/security/EndpointPolicyContractTest.java

@@ -39,4 +39,11 @@ void testEp001S1() throws Exception {
                     "http://127.0.0.1:" + (allowedPort + 1)));
         }
     }
+    @Test
+    void testEp002S2() {
+        EndpointPolicy policy = EndpointPolicy.strictPublic();
+        assertThrows(IllegalArgumentException.class, () ->
+                policy.require("https://hermes-endpoint-does-not-exist.invalid"));
+    }
+
 }