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

<body>
<iframe id="i"></iframe>
<script>
promise_test(async t => {
  // Wait for after the load event so that we are definitely testing the initial
  // about:blank-ness as the cause of the rejections.
  await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));

  i.contentWindow.navigation.onnavigate = t.unreached_func("onnavigate should not be called");
  i.contentWindow.navigation.onnavigatesuccess = t.unreached_func("onnavigatesuccess should not be called");
  i.contentWindow.navigation.onnavigateerror = t.unreached_func("onnavigateerror should not be called");

  const result = i.contentWindow.navigation.navigate("#1", { history: "push" });
  await assertBothRejectDOM(t, result, "NotSupportedError", i.contentWindow);
}, "navigate() with history: 'push' in initial about:blank document");
</script>