navigation-back-same-document-preventDefault.html (1207B)
1 <!doctype html> 2 <script src="/resources/testharness.js"></script> 3 <script src="/resources/testharnessreport.js"></script> 4 <script src="../navigation-methods/return-value/resources/helpers.js"></script> 5 <script> 6 promise_test(async t => { 7 let start_length = navigation.entries().length; 8 let start_index = navigation.currentEntry.index; 9 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 await navigation.navigate("#").finished; 15 assert_equals(navigation.entries().length, start_length + 1); 16 assert_equals(navigation.currentEntry.index, start_index + 1); 17 18 navigation.onnavigate = e => e.preventDefault(); 19 20 let navigateerror_called = false; 21 navigation.onnavigateerror = t.step_func(e => { 22 assert_equals(e.constructor, ErrorEvent); 23 assert_equals(e.filename, location.href); 24 navigateerror_called = true; 25 }); 26 await assertBothRejectDOM(t, navigation.back(), "AbortError"); 27 assert_equals(navigation.currentEntry.index, start_index + 1); 28 assert_true(navigateerror_called); 29 }, "navigation.back() same-document preventDefault"); 30 </script>