 "rgb(128, 0, 128)";

    assert_equals(computedColor, expectedColor);
    assert_true(styleExists("h1 { color: purple; }")); // first style sheet
    assert_false(styleExists("h1 { color: brown; }")); // second style sheet (should not be loaded yet)
  }, "Only the style sheet loaded via a link element whose media attribute matches the environment should block following script execution");

  const secondStylesheetTest = async_test("Both style sheets loaded via the link elements should be registered as styl