after-transition-uncancelable.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /navigation-api/commit-behavior/after-transition-uncancelable.html - WPT Dashboard Interop Dashboard

<!doctype html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<iframe id="i" src="/common/blank.html"></iframe>

<body>

<script>

promise_test(async t => {

  // Wait for after the load event so that the navigation doesn't get converted

  // into a replace navigation.

  await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));

  await i.contentWindow.navigation.navigate("#1").finished;

  i.contentWindow.navigation.onnavigate = t.step_func(e => {

    assert_false(e.cancelable);

    // intercept() should throw with commit: "after-transition" because e.cancelable is false.

    let iframe_constructor = i.contentWindow.DOMException;

    assert_throws_dom("InvalidStateError", iframe_constructor, () => e.intercept({ commit: "after-transition" }));

});

  await i.contentWindow.navigation.back().finished;

}, "{ commit: 'after-transition' } for an uncancelable traverse navigation");

</script>

</body>