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chromium/third_party/blink/web_tests/external/wpt/navigation-api/navigation-methods/return-value/reload-intercept.html 

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/helpers.js"></script>

<script>
promise_test(async t => {
  navigation.onnavigate = e => e.intercept({ handler: () => Promise.resolve({ abc: 'def' }) });

  const result = navigation.reload();

  await assertBothFulfill(t, result, navigation.currentEntry);
}, "reload() and intercept() with a fulfilled promise");
</script>