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+<!DOCTYPE html>
+<!-- In Bug 1217367, we will try to merge update events for same registration
+ if possible. This testcase is used to make sure the optimization algorithm
+ doesn't go wrong. -->
+<title>Service Worker: Trigger multiple updates</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/test-helpers.sub.js"></script>
+<script>
+promise_test(function(t) {
+ var script = 'resources/update-nocookie-worker.py';
+ var scope = 'resources/scope/update';
+ var expected_url = normalizeURL(script);
+ var registration;
+
+ return service_worker_unregister_and_register(t, expected_url, scope)
+ .then(function(r) {
+ registration = r;
+ return wait_for_state(t, registration.installing, 'activated');
+ })
+ .then(function() {
+ // Test single update works before triggering multiple update events
+ return Promise.all([registration.update(),
+ wait_for_update(t, registration)]);
+ })
+ .then(function() {
+ assert_equals(registration.installing.scriptURL, expected_url,
+ 'new installing should be set after update resolves.');
+ assert_equals(registration.waiting, null,
+ 'waiting should still be null after update resolves.');
+ assert_equals(registration.active.scriptURL, expected_url,
+ 'active should still exist after update found.');
+ return wait_for_state(t, registration.installing, 'installed');
+ })
+ .then(function() {
+ assert_equals(registration.installing, null,
+ 'installing should be null after installing.');
+ if (registration.waiting) {
+ assert_equals(registration.waiting.scriptURL, expected_url,
+ 'waiting should be set after installing.');
+ assert_equals(registration.active.scriptURL, expected_url,
+ 'active should still exist after installing.');
+ return wait_for_state(t, registration.waiting, 'activated');
+ }
+ })
+ .then(function() {
+ // Test triggering multiple update events at the same time.
+ var promiseList = [];
+ const burstUpdateCount = 10;
+ for (var i = 0; i < burstUpdateCount; i++) {
+ promiseList.push(registration.update());
+ }
+ promiseList.push(wait_for_update(t, registration));
+ return Promise.all(promiseList);
+ })
+ .then(function() {
+ assert_equals(registration.installing.scriptURL, expected_url,
+ 'new installing should be set after update resolves.');
+ assert_equals(registration.waiting, null,
+ 'waiting should still be null after update resolves.');
+ assert_equals(registration.active.scriptURL, expected_url,
+ 'active should still exist after update found.');
+ return wait_for_state(t, registration.installing, 'installed');
+ })
+ .then(function() {
+ assert_equals(registration.installing, null,
+ 'installing should be null after installing.');
+ if (registration.waiting) {
+ assert_equals(registration.waiting.scriptURL, expected_url,
+ 'waiting should be set after installing.');
+ assert_equals(registration.active.scriptURL, expected_url,
+ 'active should still exist after installing.');
+ return wait_for_state(t, registration.waiting, 'activated');
+ }
+ })
+ .then(function() {
+ // Test update still works after handling update event burst.
+ return Promise.all([registration.update(),
+ wait_for_update(t, registration)]);
+ })
+ .then(function() {
+ assert_equals(registration.installing.scriptURL, expected_url,
+ 'new installing should be set after update resolves.');
+ assert_equals(registration.waiting, null,
+ 'waiting should be null after activated.');
+ assert_equals(registration.active.scriptURL, expected_url,
+ 'active should still exist after update found.');
+
+ return service_worker_unregister_and_done(t, scope);
+ });
+ }, 'Trigger multiple updates.');
+</script>