| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Navigating to a fragment should not clear forward history</title> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#scroll-to-fragid"> |
| <link rel="help" href="https://github.com/whatwg/html/issues/2796"> |
| <link rel="help" href="https://github.com/whatwg/html/pull/2869"> |
| <link rel="author" href="mailto:d@domenic.me" title="Domenic Denicola"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="navigate-helpers.js"></script> |
| |
| <body> |
| |
| <script> |
| "use strict"; |
| let resolve, iframe; |
| promise_test(() => { |
| iframe = document.createElement("iframe"); |
| iframe.src = "/common/blank.html"; |
| iframe.addEventListener("load", runTest); |
| document.body.appendChild(iframe); |
| |
| return new Promise(r => resolve = r); |
| }); |
| |
| function runTest() { |
| iframe.removeEventListener("load", runTest); |
| const frameWindow = iframe.contentWindow; |
| |
| resolve((async () => { |
| await navigateAndWaitForChange(frameWindow, w => w.location.href = "/common/blank.html#apple"); |
| await navigateAndWaitForChange(frameWindow, w => w.location.href = "/common/blank.html#banana"); |
| await navigateAndWaitForChange(frameWindow, w => w.location.href = "/common/blank.html#cat"); |
| |
| assert_equals(frameWindow.location.hash, "#cat"); |
| |
| // Might not be 4 (= 3 for iframe + 1 initial) due to cross-browser differences or if people are |
| // running this test in a window that has previously been places. The important thing for this |
| // test is the delta from this value. |
| const afterThreeNavigations = frameWindow.history.length; |
| |
| await navigateAndWaitForChange(frameWindow, w => w.history.back()); |
| |
| assert_equals(frameWindow.location.hash, "#banana"); |
| assert_equals(frameWindow.history.length, afterThreeNavigations, |
| "back() must not change the history length"); |
| |
| await navigateAndWaitForChange(frameWindow, |
| w => w.location.replace("/common/blank.html#zebra")); |
| |
| assert_equals(frameWindow.location.hash, "#zebra"); |
| assert_equals(frameWindow.history.length, afterThreeNavigations, |
| "replace() must not change the history length"); |
| |
| // As of the time of this writing (2017-08-14), Firefox is not firing hashchange on forward, so |
| // we automatically assume navigation succeeded after 100 ms. A sibling test will test this |
| // particular Firefox bug. |
| await navigateAndWaitForChange(frameWindow, w => w.history.forward(), |
| { assumeSuccessAfter: 500 }); |
| |
| assert_equals(frameWindow.location.hash, "#cat"); |
| assert_equals(frameWindow.history.length, afterThreeNavigations, |
| "forward() must not change the history length"); |
| |
| })()); |
| } |
| |
| </script> |
