hover-002.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /css/selectors/hover-002.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>Selectors: Change class to enable :hover</title>

<link rel="author" title="Rune Lillesveen" href="futhark@chromium.org">

<link rel="help" href="https://drafts.csswg.org/selectors/#the-hover-pseudo">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/resources/testdriver.js"></script>

<script src="/resources/testdriver-actions.js"></script>

<script src="/resources/testdriver-vendor.js"></script>

<style>

  .affected:hover { color: green }

  #hoveredContents { display: contents }

</style>

<div id="hovered">Hover me - should become green</div>

<div id="hoveredContents">

  <div id="hovered2">Hover me - should become green</div>

</div>

<script>

  function mouseMoveToTarget(selector) {

     let target = document.querySelector(selector);

     return new test_driver.Actions().pointerMove(0, 0, {origin: target})

             .send();

  function testElementGreen(test, element) {

    element.addEventListener("mouseover", test.step_func(event => {

      assert_equals(getComputedStyle(element).color, "rgb(0, 128, 0)");

      test.done();

    }));

  // Setting the affected classes here makes the two elements go from never

  // reacting to hover to being affected by hover without changing computed

  // style.

  hovered.offsetTop;

  hovered.className = "affected";

  hoveredContents.className = "affected";

  async_test(t => { testElementGreen(t, hovered); }, "Hover #hovered element should make it go green");

  async_test(t => { testElementGreen(t, hovered2); }, "Hover #hoveredContents child should make it go green");

  mouseMoveToTarget("#hovered").then(() => {

    mouseMoveToTarget("#hovered2");

});

</script>