dispose-same-document-navigate-during.html (2214B)
1 <!doctype html> 2 <script src="/resources/testharness.js"></script> 3 <script src="/resources/testharnessreport.js"></script> 4 <script> 5 promise_test(async (t) => { 6 // Wait for after the load event so that the navigation doesn't get converted 7 // into a replace navigation. 8 await new Promise(r => window.onload = () => t.step_timeout(r, 0)); 9 let start_length = navigation.entries().length; 10 let start_index = navigation.currentEntry.index; 11 12 location.hash = "#1"; 13 location.hash = "#2"; 14 location.hash = "#3"; 15 16 assert_equals(navigation.entries().length, start_length + 3); 17 const [entry0, entry1, entry2, entry3] = navigation.entries().slice(start_index); 18 assert_equals((new URL(entry2.url)).hash, "#2"); 19 assert_equals((new URL(entry3.url)).hash, "#3"); 20 21 let dispose3Called = 0; 22 let spoonPromise; 23 entry3.addEventListener("dispose", t.step_func(e => { 24 ++dispose3Called; 25 26 spoonPromise = navigation.navigate("#spoon").committed; 27 })); 28 29 await navigation.traverseTo(entry1.key).committed; 30 31 const forkPromise = navigation.navigate("#fork").committed; 32 assert_equals(dispose3Called, 1, "dispose for entry 3 must happen exactly once (first check)") 33 34 // The navigation to #fork will *not* be finished by the time the navigation 35 // to #spoon kicks off, so the finished promise will reject. But, the 36 // committed promise should still fulfill, since as we see below, #fork ends 37 // up in the history list. 38 await Promise.all([forkPromise, spoonPromise]); 39 40 assert_equals(dispose3Called, 1, "dispose for entry 3 must happen exactly once (final check)"); 41 42 assert_equals(navigation.entries().length, start_length + 3); 43 const [finalEntry0, finalEntry1, finalEntry2, finalEntry3] = navigation.entries().slice(start_index); 44 assert_equals(finalEntry0, entry0); 45 assert_equals(finalEntry1, entry1); 46 assert_not_equals(finalEntry2, entry2); 47 assert_not_equals(finalEntry3, entry3); 48 assert_equals(navigation.currentEntry, finalEntry3); 49 assert_equals((new URL(finalEntry2.url)).hash, "#fork"); 50 assert_equals((new URL(finalEntry3.url)).hash, "#spoon"); 51 }, "navigate() during a same-document-navigation-initiated dispose works (since it's after the previous navigation)"); 52 </script>