testing/web-platform/tests/navigation-api/navigation-methods/traverseTo-detach-between-navigate-and-navigatesuccess.html

   1 <!doctype html>
   2 <script src="/resources/testharness.js"></script>
   3 <script src="/resources/testharnessreport.js"></script>
   4 <script src="return-value/resources/helpers.js"></script>
   5
   6 <iframe id="i" src="/common/blank.html"></iframe>
   7
   8 <script>
   9 async_test(t => {
  10   window.onload = t.step_func(() => {
  11     const iWindow = i.contentWindow;
  12     const iDOMException = iWindow.DOMException;
  13     const iNavigationHistoryEntry = iWindow.NavigationHistoryEntry;
  14
  15     i.contentWindow.navigation.navigate("#1").finished.then(t.step_func(() => {
  16       assert_equals(i.contentWindow.navigation.entries().length, 2);
  17       let key = i.contentWindow.navigation.entries()[0].key;
  18
  19       let onnavigateerror_called = false;
  20       let result;
  21
  22       i.contentWindow.navigation.onnavigate = t.step_func(e => {
  23         // 1. The intercept handler runs.
  24         // 2. "t.step_timeout(handlerRunResolve, 0)" executes handlerRunResolve in a macro task.
  25         // 3. In the next microtask, the iframe is removed.
  26         // 4. "t.step_timeout(resolve, 5)" executes and the intercept handler promise resolves.
  27         let handlerRunResolve;
  28         new Promise(r => handlerRunResolve = r).then(() => i.remove());
  29         e.intercept({ handler() {
  30           t.step_timeout(handlerRunResolve, 0);
  31           return new Promise(resolve => t.step_timeout(resolve, 5));
  32         }});
  33       });
  34
  35       i.contentWindow.navigation.onnavigatesuccess = t.unreached_func("navigatesuccess must not fire");
  36
  37       i.contentWindow.navigation.onnavigateerror = t.step_func(e => {
  38         assert_false(onnavigateerror_called);
  39         onnavigateerror_called = true;
  40         assert_equals(e.filename, location.href);
  41         assert_greater_than(e.lineno, 0);
  42         assert_greater_than(e.colno, 0);
  43
  44         assertCommittedFulfillsFinishedRejectsExactly(t, result, iWindow.navigation.currentEntry, e.error, iWindow, iDOMException, iNavigationHistoryEntry).then(
  45           () => t.done(),
  46           t.step_func(err => { throw err; })
  47         );
  48       });
  49
  50       result = i.contentWindow.navigation.traverseTo(key);
  51     }));
  52   });
  53 }, "Detach a window between when a traverseTo() fires navigate and navigatesuccess");
  54 </script>