chromium/third_party/blink/web_tests/external/wpt/css/selectors/focus-visible-016.html

<!DOCTYPE html>
<meta charset="utf-8" />
<title>CSS Selectors Test: :focus-visible always match on text inputs</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
<meta name="assert" content="This test checks that even if the active element does not match ':focus-visible' and a script causes focus to move into a text input, the text input should  match ':focus-visible'.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<style>
  @supports not selector(:focus-visible) {
    :focus {
      outline: red solid 5px;
      background-color: red;
    }
  }

  div:focus-visible {
    background: red;
  }

  div:focus:not(:focus-visible) {
    background-color: lime;
  }

  input:focus-visible {
    background: lime;
  }

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

<div id="initial" tabindex="0">Initial</div>
<input id="target" />

<script>
  setup({ explicit_done: true });

  async_test(function(t) {
    initial.addEventListener("focus", t.step_func(function() {
      assert_equals(getComputedStyle(initial).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${initial.tagName}#${initial.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();
    }));

    test_driver.click(initial).then(() => done());
  }, ":focus-visible always match on text inputs");
</script>