pointerevents/pointerevent_iframe-touch-action-none_touch.html

<html>
  <head>
    <title>iframe touch-action:none does not prevent panning or zooming inside
    the iframe</title>
    <meta name="viewport" content="width=device-width">
    <link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="pointerevent_support.js"></script>
    <script src="/resources/testdriver.js"></script>
    <script src="/resources/testdriver-actions.js"></script>
    <script src="/resources/testdriver-vendor.js"></script>
  </head>
  <style>
    iframe {
      touch-action: none;
    }
  </style>
  <body>
    <h1>iframe touch-action:none attribute</h1>
    <h2 id="pointerTypeDescription"></h2>
    <br>
    <iframe id="target"></iframe>
  </body>
  <script>
    'use strict';

    function loadFrame() {
      return new Promise(resolve => {
        const frame = document.getElementById('target');
        frame.onload = resolve;
        frame.src = 'resources/iframe-touch-action-none-subframe.html';
      });
    }

    function messageReceived() {
      return new Promise(resolve => {
        window.addEventListener('message', (event) => {
          if (event.source != target.contentWindow) {
            return;
          }
          if (event.data && event.data.type == "subframe-event") {
            resolve(event.data.eventType);
          }
        });
      });
    }

    promise_test(async t => {
      const target = document.getElementById("target");
      await loadFrame();

      const messagePromise = messageReceived();

      await new test_driver.Actions()
            .addPointer("pointer1", "touch")
            .pointerMove(0, 0, {origin: target})
            .pointerDown()
            .pointerMove(25, 25, {origin: target})
            .pointerUp()
            .send();

      const eventType = await messagePromise;
      assert_equals(eventType, 'pointercancel');
    }, 'touch iframe received pointercancel');
  </script>
</html>