testing/web-platform/tests/navigation-api/navigation-methods/return-value/traverseTo-cross-document-preventDefault.html

   1 <!doctype html>
   2 <script src="/resources/testharness.js"></script>
   3 <script src="/resources/testharnessreport.js"></script>
   4 <script src="resources/helpers.js"></script>
   5
   6 <iframe id="i" src="/common/blank.html"></iframe>
   7
   8 <script>
   9 promise_test(async t => {
  10   // Wait for after the load event so that the navigation doesn't get converted
  11   // into a replace navigation.
  12   await new Promise(resolve => window.onload = () => t.step_timeout(resolve, 0));
  13
  14   assert_equals(i.contentWindow.navigation.entries().length, 1);
  15   let key = i.contentWindow.navigation.currentEntry.key;
  16
  17   i.contentWindow.navigation.navigate("?1");
  18   await new Promise(resolve => i.onload = resolve);
  19
  20   assert_equals(i.contentWindow.navigation.entries().length, 2);
  21   assert_equals(i.contentWindow.navigation.currentEntry, i.contentWindow.navigation.entries()[1]);
  22
  23   // This will be a noop, because navigate events are uncancelable for traversals.
  24   i.contentWindow.navigation.onnavigate = e => e.preventDefault();
  25
  26   assertNeverSettles(t, i.contentWindow.navigation.traverseTo(key), i.contentWindow);
  27   await new Promise(resolve => i.onload = () => t.step_timeout(resolve, 0));
  28 }, "traverseTo() promise never settle when preventDefault()ing the navigate event (cross-document)");
  29 </script>