File: pagereveal-no-view-transition.html

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<!DOCTYPE html>
<title>
  View transitions: in navigation without transition, pagereveal event has
  null viewTransition
</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">
<link rel="author" href="mailto:bokan@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
promise_test(async () => {
  const pagereveal = await new Promise(resolve => {
    addEventListener('pagereveal', e => resolve(e));
  });
  assert_true('viewTransition' in pagereveal,
      '`pagereveal` must have a `viewTransition` property.');
  assert_equals(pagereveal.viewTransition, null,
      '`viewTransition` must be null when there is no transition.');
});
</script>