| <!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 () => { |
| await new Promise(resolve => window.onload = resolve); |
| |
| i.contentWindow.navigation.addEventListener("navigate", e => { |
| e.transitionWhile(Promise.resolve()); |
| }); |
| |
| const returnValueFinished1 = i.contentWindow.navigation.navigate("?1").finished; |
| const transition1 = i.contentWindow.navigation.transition; |
| const transitionFinished1 = transition1.finished; |
| |
| assert_true(returnValueFinished1 instanceof i.contentWindow.Promise); |
| assert_true(transition1 instanceof i.contentWindow.AppHistoryTransition); |
| assert_true(transitionFinished1 instanceof i.contentWindow.Promise); |
| |
| assert_not_equals(returnValueFinished1, transitionFinished1); |
| |
| // Ensure the getters aren't generating new objects each time. |
| assert_equals(i.contentWindow.navigation.transition, transition1); |
| assert_equals(i.contentWindow.navigation.transition.finished, transitionFinished1); |
| |
| assert_equals(await transitionFinished1, undefined); |
| |
| // Ensure stuff does change after another navigation. |
| const committed2 = i.contentWindow.navigation.navigate("?2").committed; |
| const transition2 = i.contentWindow.navigation.transition; |
| const transitionFinished2 = transition2.finished; |
| |
| assert_not_equals(transition2, transition1); |
| assert_not_equals(transitionFinished2, transitionFinished1); |
| |
| await committed2; |
| }, "Realm and identity of the navigation.transition object and its finished promise"); |
| </script> |
