// Verify that our custom factory was indeed used.
        verify(mockFactory).createURLStreamHandler("http");
    }

    @Test
    void testOpenConnection_WithSystemPropertyHandler_SkipsJcifsPackage() throws Exception {
        // This test verifies that the handler resolution mechanism correctly skips the 'jcifs'
        // package when it is listed in the 'java.protocol.handler.pkgs' system property.