<!DOCTYPE html>
<meta charset="utf-8" />
<title>CSS Test (Selectors): By default initial programatic focus matches :focus-visible and it shows an auto focus ring</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" />
<link rel="help" href="https://html.spec.whatwg.org/#phrasing-content-3" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
<style>
  #warning {
    display: none;
    background: red;
  }

  @supports not selector(:focus-visible) {
    #instructions {
      display: none;
    }

    #warning {
      display: block;
    }
  }
</style>

<p>This test checks that by default, if using JavaScript to focus an element triggers <code>:focus-visible</code> matching, then the element should show a focus ring with <code>outline-style: auto</code>.</p>
<ol id="instructions">
  <li>If the element below that says "Target" show a focus ring with <code>outline-style: auto</code>, then the test result is SUCCESS.</li>
</ol>
<p id="warning">Your user-agent does not support <code>:focus-visible</code> pseudo-class, please SKIP this test.</p>
<div id="target" tabindex="0">Target</div>
<script>
  // Check that :focus-visible is supported.
  test_valid_selector(':focus-visible');

  async_test(function(t) {
    target.addEventListener("focus", t.step_func(function() {
      assert_equals(getComputedStyle(target).outlineStyle, "auto", `outline-style for ${target.tagName}#${target.id} should be auto`);
      t.done();
    }));
    target.focus();
  }, "By default initial programatic focus matches ':focus-visible', so the element shows a focus ring with 'outline-style: auto'");
</script>