1 files changed, 32 insertions, 0 deletions
diff --git a/testing/web-platform/tests/service-workers/service-worker/activate-event-after-install-state-change.https.html b/testing/web-platform/tests/service-workers/service-worker/activate-event-after-install-state-change.https.html
new file mode 100644
index 000000000..57fccf137
--- /dev/null
+++ b/testing/web-platform/tests/service-workers/service-worker/activate-event-after-install-state-change.https.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>Service Worker: registration events</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/empty-worker.js';
+  var scope = 'resources/blank.html';
+  var registration;
+
+  return service_worker_unregister_and_register(t, script, scope)
+    .then(function(registration) {
+        var sw = registration.installing;
+
+        return new Promise(t.step_func(function(resolve) {
+          sw.onstatechange = t.step_func(function() {
+            if (sw.state === 'installed') {
+              assert_equals(registration.active, null,
+                            'installed event should be fired before activating service worker');
+              resolve();
+            }
+          });
+        }));
+      })
+    .then(function() {
+        return service_worker_unregister_and_done(t, scope);
+      })
+    .catch(unreached_rejection(t));
+  }, 'installed event should be fired before activating service worker');
+
+</script>