wpt/css/selectors/focus-visible-014.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<meta charset="utf-8" />
<title>CSS Selectors Test: :focus-visible matches after script focus move</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
<meta name="assert" content="This test checks that if the active element matches ':focus-visible' and a script causes focus to move elsewhere, the newly focused element should match ':focus-visible'.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  @supports not selector(:focus-visible) {
    :focus {
      outline: red solid 5px;
      background-color: red;
    }
  }

  :focus-visible {
    background: lime;
  }

  :focus:not(:focus-visible) {
    background-color: red;
  }
</style>

<input id="input"></input>
<div id="target" tabindex="0">Target</div>

<script>
  async_test(function(t) {
    input.addEventListener("focus", t.step_func(function() {
      assert_equals(getComputedStyle(input).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${input.tagName}#${input.id} should be lime`);
      target.focus();
    }));

    target.addEventListener("focus", t.step_func(function() {
      assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${target.tagName}#${target.id} should be lime`);
      t.done();
    }));

    input.focus();
  }, ":focus-visible matches after script focus move");
</script>