transition-finished-mark-as-handled.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/ordering-and-transition/transition-finished-mark-as-handled.html - WPT Dashboard Interop Dashboard

<!doctype html>

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

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

<script>

async_test(t => {

  navigation.addEventListener("navigate", e => {

    e.intercept({ handler: () => Promise.reject(new Error("oh no!")) });

});

  window.onunhandledrejection = t.unreached_func("unhandledrejection must not fire");

  location.href = "?1";

  // Make sure to trigger the getter to ensure the promise materializes!

  navigation.transition.finished;

  t.step_timeout(() => t.done(), 10);

}, "navigation.transition.finished must not trigger unhandled rejections");

</script>