Update web-platform-tests to revision b382ac7192087da0a7439902e20be76ab7587ee8

tests/wpt/web-platform-tests/background-fetch/service_workers/sw-helpers.js

@@ -0,0 +1,12 @@
+// 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');
+});

tests/wpt/web-platform-tests/background-fetch/service_workers/sw-update-ui.js

@@ -0,0 +1,22 @@
+importScripts('sw-helpers.js');
+
+async function updateUI(event) {
+  let updateParams = [];
+  switch (event.id) {
+    case 'update-once':
+      updateParams = [{title: 'Title1'}];
+      break;
+    case 'update-twice':
+      updateParams = [{title: 'Title1'}, {title: 'Title2'}];
+      break;
+  }
+
+  return Promise.all(updateParams.map(param => event.updateUI(param)))
+           .then(() => 'update success')
+           .catch(e => e.message);
+}
+
+self.addEventListener('backgroundfetched', event => {
+  event.waitUntil(updateUI(event)
+      .then(update => sendMessageToDocument({ type: event.type, update })))
+});

tests/wpt/web-platform-tests/background-fetch/service_workers/sw.js

@@ -0,0 +1,19 @@
+importScripts('sw-helpers.js');
+
+async function getFetchResult(settledFetch) {
+  if (!settledFetch.response)
+    return Promise.resolve(null);
+
+  return {
+    url: settledFetch.response.url,
+    status: settledFetch.response.status,
+    text: await settledFetch.response.text(),
+  };
+}
+
+self.addEventListener('backgroundfetched', event => {
+  event.waitUntil(
+    event.fetches.values()
+      .then(fetches => Promise.all(fetches.map(fetch => getFetchResult(fetch))))
+      .then(results => sendMessageToDocument({ type: event.type, results })));
+});