| <!doctype html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| async_test(t => { |
| // Wait for after the load event so that the navigation doesn't get converted |
| // into a replace navigation. |
| window.onload = () => t.step_timeout(() => { |
| navigation.navigate("#foo").committed.then(() => { |
| assert_true(navigation.canGoBack); |
| navigation.onnavigate = t.step_func(e => e.transitionWhile(Promise.resolve())); |
| navigation.back().committed.then(t.step_func_done(() => { |
| assert_equals(navigation.entries().length, 2); |
| assert_equals(navigation.currentEntry, navigation.entries()[0]); |
| })); |
| }); |
| }, 0); |
| }, "AppHistoryNavigateEvent's transitionWhile() can intercept navigation.back()"); |
| </script> |
