focus-click-on-shadow-host.html

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This WPT test may be referenced by the following Test IDs:
- /shadow-dom/focus/focus-click-on-shadow-host.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>HTML Test: click on shadow host with delegatesFocus</title>

<link rel="author" href="mailto:dizhangg@chromium.org">

<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1327136">

<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>

<body>

  <div id="host"></div>

</body>

<script>

const host = document.getElementById("host");

const shadowRoot = host.attachShadow({ mode: "open", delegatesFocus: true });

// Add an unfocusable spacer, because test_driver.click will click on the

// center point of #host, and we don't want the click to land on focusableDiv

const spacer = document.createElement("div");

spacer.style = "height: 1000px;";

shadowRoot.appendChild(spacer);

const focusableDiv = document.createElement("div");

focusableDiv.tabIndex = 0;

shadowRoot.appendChild(focusableDiv);

promise_test(async () => {

  assert_equals(document.activeElement, document.body);

  // Mouse click

  await test_driver.click(host);

  assert_equals(document.activeElement, host);

  assert_equals(shadowRoot.activeElement, focusableDiv);

  assert_true(host.matches(':focus'));

  assert_true(focusableDiv.matches(':focus'));

  assert_false(focusableDiv.matches(':focus-visible'));

}, ":focus should be applied to the host and the child node when the focus is moved by mouse click");

</script>