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chromium/third_party/blink/web_tests/external/wpt/navigation-api/navigation-activation/activation-reload.html 

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<iframe id="i" src="/common/blank.html"></iframe>
<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));

  i.contentWindow.navigation.reload();
  await new Promise(resolve => i.onload = () => t.step_timeout(resolve, 0));

  // activation.entry and activation.from are equal after reload
  assert_equals(i.contentWindow.navigation.entries().length, 1);
  assert_equals(i.contentWindow.navigation.activation.entry.index, 0);
  assert_equals(i.contentWindow.navigation.activation.entry,
                i.contentWindow.navigation.activation.from);
  assert_equals(i.contentWindow.navigation.activation.navigationType, "reload");
}, "navigation.activation after reload");
</script>