1 files changed, 58 insertions, 0 deletions
diff --git a/testing/web-platform/tests/resource-timing/resources/sw-install.html b/testing/web-platform/tests/resource-timing/resources/sw-install.html
new file mode 100644
index 0000000000..3d1407e831
--- /dev/null
+++ b/testing/web-platform/tests/resource-timing/resources/sw-install.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<script>
+const service_worker_unregister = async scope => {
+  const absoluteScope = new URL(scope, window.location).href;
+  const registration = await navigator.serviceWorker.getRegistration(scope);
+  if (registration && registration.scope === absoluteScope) {
+    return registration.unregister();
+  }
+};
+
+const service_worker_reregister = async (url, scope) => {
+  if (!scope || scope.length == 0) {
+    return Promise.reject(new Error('tests must define a scope'));
+  }
+
+  await service_worker_unregister(scope);
+  return navigator.serviceWorker.register(url, {'scope': scope});
+};
+
+const wait_for_state_activated = worker => {
+  if (worker.state === 'activated')
+    return Promise.resolve();
+
+  if (worker.state === 'redundant') {
+    return Promise.reject(new Error('worker is redundant'));
+  }
+
+  return new Promise(function(resolve) {
+    worker.addEventListener('statechange', () => {
+      if (worker.state === 'activated') {
+        resolve();
+      }
+    });
+  });
+};
+
+(async () => {
+  const script = '/resource-timing/resources/sw.js';
+  const scope = '/resource-timing/resources/';
+  const registration = await service_worker_reregister(script, scope);
+  await wait_for_state_activated(registration.installing);
+
+  const opener = window.opener;
+  if (!opener) {
+    return;
+  }
+
+  opener.postMessage("installed", "*");
+  window.addEventListener("message", async e => {
+    if (e.data === "unregister") {
+      await registration.unregister();
+      opener.postMessage("unregistered", "*");
+    }
+  });
+
+})();
+
+</script>