<!DOCTYPE html>
<title>Test keyboard scroll bubbling from a fenced frame.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="resources/utils.js"></script>
<style>
  body {
    /* Make main frame scrollable */
    width: 200vw;
    height: 200vh;
  }
</style>

<body>
<script>

// Ensure keyboard scrolling from inside a fenced frame is bubbled out to the
// embedding frame.
promise_test(async t => {
  const frame = attachFencedFrameContext({html: `
    <!DOCTYPE html>
    <style>
      body {
        /* Make fenced frame scrollable */
        width: 200vw;
        height: 200vh;
      }
    </style>
    <script src="/resources/testdriver.js"><\/script>
    <script src="/resources/testdriver-actions.js"><\/script>
    <script src="/resources/testdriver-vendor.js"><\/script>
    `});

  // Scroll the fenced frame to its full extent so that left/down arrow key
  // scrolling will bubble to the embedder.
  await frame.execute(async () => {
    window.scrollTo(10000, 10000);
  });

  assert_equals(window.scrollX, 0, '[PRECONDITION] main frame has no x scroll.');
  assert_equals(window.scrollY, 0, '[PRECONDITION] main frame has no y scroll.');

  // Simulate a right arrow and down arrow key in the fenced frame.
  await frame.execute(async () => {
      const arrow_right = "\uE014";
      const arrow_down = "\uE015";

      test_driver.send_keys(document.body, arrow_right);
      test_driver.send_keys(document.body, arrow_down);
  });

  // Use step_wait to poll since the scroll may be executed asynchronously
  // (e.g. IPC to embedder, scroll animation).
  await t.step_wait(() => window.scrollX > 0, "Wait for horizontal scroll.");
  assert_greater_than(window.scrollX, 0, 'Horizontal scroll should bubble to main frame.');

  await t.step_wait(() => window.scrollY > 0, "Wait for vertical scroll.");
  assert_greater_than(window.scrollY, 0, 'Vertical scroll should bubble to main frame.');
}, 'Keyboard scrolling bubbles out of fenced frame');

</script>
</body>