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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /navigation-api/navigate-event/defer/tentative/defer-restore-callback-abort.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<title>
navigateEvent.deferPageSwap: deferring method should complete before
committing
</title>
<body>
<script>
switch (new URLSearchParams(location.search).get("phase") || "test") {
case "test":
promise_test(async (t) => {
window.step_timeout = t.step_timeout;
const done = Promise.withResolvers();
window.did_load = done.resolve;
const popup = window.open("?phase=initial");
const events = await done.promise;
assert_array_equals(events, [
"navigate",
"handler",
"preview",
"abort",
"navigateerror",
"restore",
]);
});
break;
case "initial":
const events = [];
navigation.addEventListener("navigateerror", () => {
events.push("navigateerror");
});
navigation.addEventListener(
"navigate",
(navigate_event) => {
navigate_event.signal.addEventListener("abort", () => {
events.push("abort");
});
events.push("navigate");
navigate_event.deferPageSwap({
handler: async (controller) => {
const {resolve, promise} = Promise.withResolvers();
events.push("handler");
controller.addRestoreCallback(() => {
events.push("restore");
window.opener.did_load(events);
});
window.step_timeout(() => {
events.push("preview");
window.stop();
resolve();
}, 10);
await promise;
}
});
},
{ once: true }
);
navigation.navigate("?next");
break;
}
</script>
</body>