File: transition-finished-mark-as-handled.html

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<!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>