Bug 1561194 [wpt PR 17347] - [Background Sync] Periodic Background Sync idl, a=testonly

Automatic update from web-platform-tests
[Background Sync] Periodic Background Sync idl

changes + few WPT and web_tests.

Bug: 925297

Change-Id: I5c8833e236f7cf9b2993e69494ec4dc9797f7120
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1660446
Commit-Queue: Mugdha Lakhani <nator@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Reviewed-by: Mike West <mkwst@chromium.org>
Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#671726}

--

wpt-commits: 38ca23981b8b2227e47a497d5952503202350e38
wpt-pr: 17347

testing/web-platform/tests/BackgroundSync/periodicsync.https.window.js

@@ -0,0 +1,23 @@
+// META: script=/common/get-host-info.sub.js
+// META: script=/service-workers/service-worker/resources/test-helpers.sub.js
+
+'use strict'
+
+promise_test(async test => {
+  const script = 'service_workers/sw.js';
+  const scope = 'service_workers/' + location.pathname;
+
+  const serviceWorkerRegistration =
+      await service_worker_unregister_and_register(test, script, scope);
+
+  assert_equals(
+      serviceWorkerRegistration.active, null,
+      'There must not be an activated worker');
+
+  await promise_rejects(
+      test, new DOMException('', 'InvalidStateError'),
+      serviceWorkerRegistration.periodicSync.register(
+          'test_tag'),
+      'register() must reject on pending and installing workers');
+}, 'Periodic Background Sync requires an activated Service Worker');
+

testing/web-platform/tests/BackgroundSync/service_workers/sw.js

@@ -0,0 +1,20 @@
+// The source to post setup and completion results to.
+let source = null;
+
+function sendMessageToDocument(msg) {
+  source.postMessage(msg);
+}
+
+// Notify the document that the SW is registered and ready.
+self.addEventListener('message', event => {
+  source = event.source;
+  sendMessageToDocument('ready');
+});
+
+self.addEventListener('sync', event => {
+  sendMessageToDocument('sync event received!');
+});
+
+self.addEventListener('periodicsync', event => {
+  sendMessageToDocument('periodicsync event received!');
+});