chromium/third_party/blink/web_tests/external/wpt/gamepad/not-fully-active.html

<!DOCTYPE html>
<meta charset="utf-8" />
<title>Gamepad tests for non-fully-active document</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
  promise_test(async () => {
    const iframe = document.createElement('iframe');
    iframe.srcdoc = `<h1>test</h1>`
    await new Promise(resolve => {
      iframe.onload = resolve;
      document.body.appendChild(iframe);
    });
    const navigator = iframe.contentWindow.navigator;
    iframe.remove();
    const gamepads = navigator.getGamepads();
    assert_true(Array.isArray(gamepads), 'getGamepads should return an array');
    assert_equals(gamepads.length, 0, "No gamepads should be available");
  }, "calling getGamepads() in a non-fully-active document");
</script>