restriction-window-resize.html | Explore in Territory

<!DOCTYPE html>
<meta name="timeout" content="long">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="../resources/utils.js"></script>
<script src="resources/utils.js"></script>

<body>
<script>
setup(() => assertSpeculationRulesIsSupported());

// ResizeTo and ResizeBy operations should be ignored.
// See https://github.com/jeremyroman/alternate-loading-modes/issues/73.
['resizeTo', 'resizeBy'].forEach(resizeFunc => {
  promise_test(
      async t => {
        const uid = token();
        const bc = new PrerenderChannel('test-channel', uid);
        t.add_cleanup(_ => bc.close());

        const gotMessage = new Promise(resolve => {
          bc.addEventListener('message', e => {
            resolve(e.data);
          }, {once: true});
        });

        const url = `resources/window-resize.html?resize=${resizeFunc}&uid=${uid}`;

        // We have to open a new window to run the test, since a window that was
        // not created by window.open() cannot be resized.
        window.open(
            url, '_blank',
            `width=${window.screen.availWidth / 2},height=${
                window.screen.availHeight / 2},noopener`);

        const result = await gotMessage;
        assert_equals(result.status, 'PASS');
        assert_equals(
            result.prevRect.width, result.newRect.width,
            'width for prerendering');
        assert_equals(
            result.prevRect.height, result.newRect.height,
            'height for prerendering');
      },
      `a prerendering page cannot resize its window by executing ${
          resizeFunc}.`);
});
</script>
chromium/third_party/blink/web_tests/external/wpt/speculation-rules/prerender/restriction-window-resize.html
