assertEquals("smb", url.getProtocol());
    }

    @Test
    @DisplayName("parseURL: relative spec without scheme is prefixed for empty host")
    void testParseURL_RelativeSpecWithEmptyHost() throws MalformedURLException {
        // Arrange: base URL with empty host
        Handler handler = newHandler();
        URL base = new URL(null, "smb://", handler);