3 files changed, 75 insertions, 0 deletions
diff --git a/testing/web-platform/tests/background-fetch/resources/feature-name.txt b/testing/web-platform/tests/background-fetch/resources/feature-name.txt
new file mode 100644
index 0000000000..4d54f5054c
--- /dev/null
+++ b/testing/web-platform/tests/background-fetch/resources/feature-name.txt
@@ -0,0 +1 @@
+Background Fetch
+\ No newline at end of file
diff --git a/testing/web-platform/tests/background-fetch/resources/upload.py b/testing/web-platform/tests/background-fetch/resources/upload.py
new file mode 100644
index 0000000000..4c421c7d37
--- /dev/null
+++ b/testing/web-platform/tests/background-fetch/resources/upload.py
@@ -0,0 +1,3 @@
+# Simply returns the request body to check if the upload succeeded.
+def main(request, response):
+    return 200, [(b"Content-Type", request.headers[b'content-type'])], request.body
diff --git a/testing/web-platform/tests/background-fetch/resources/utils.js b/testing/web-platform/tests/background-fetch/resources/utils.js
new file mode 100644
index 0000000000..10895c3ccf
--- /dev/null
+++ b/testing/web-platform/tests/background-fetch/resources/utils.js
@@ -0,0 +1,71 @@
+'use strict';
+
+let nextBackgroundFetchId = 0;
+
+function loadScript(path) {
+  let script = document.createElement('script');
+  let promise = new Promise(resolve => script.onload = resolve);
+  script.src = path;
+  script.async = false;
+  document.head.appendChild(script);
+  return promise;
+}
+
+// Waits for a single message received from a registered Service Worker.
+async function getMessageFromServiceWorker() {
+  return new Promise(resolve => {
+    function listener(event) {
+      navigator.serviceWorker.removeEventListener('message', listener);
+      resolve(event.data);
+    }
+
+    navigator.serviceWorker.addEventListener('message', listener);
+  });
+}
+
+// Registers the |name| instrumentation Service Worker located at "service_workers/"
+// with a scope unique to the test page that's running, and waits for it to be
+// activated. The Service Worker will be unregistered automatically.
+//
+// Depends on /service-workers/service-worker/resources/test-helpers.sub.js
+async function registerAndActivateServiceWorker(test, name) {
+  const script = `service_workers/${name}`;
+  const scope = 'service_workers/scope' + location.pathname;
+
+  let serviceWorkerRegistration =
+      await service_worker_unregister_and_register(test, script, scope);
+
+  add_completion_callback(() => serviceWorkerRegistration.unregister());
+
+  await wait_for_state(test, serviceWorkerRegistration.installing, 'activated');
+  return serviceWorkerRegistration;
+}
+
+// Creates a Promise test for |func| given the |description|. The |func| will be
+// executed with the `backgroundFetch` object of an activated Service Worker
+// Registration.
+// |workerName| is the name of the service worker file in the service_workers
+// directory to register.
+function backgroundFetchTest(func, description, workerName = 'sw.js') {
+  promise_test(async t => {
+    if (typeof test_driver === 'undefined') {
+      await loadScript('/resources/testdriver.js');
+      await loadScript('/resources/testdriver-vendor.js');
+    }
+
+    await test_driver.set_permission({name: 'background-fetch'}, 'granted');
+
+    const serviceWorkerRegistration =
+        await registerAndActivateServiceWorker(t, workerName);
+    serviceWorkerRegistration.active.postMessage(null);
+
+    assert_equals(await getMessageFromServiceWorker(), 'ready');
+
+    return func(t, serviceWorkerRegistration.backgroundFetch);
+  }, description);
+}
+
+// Returns a Background Fetch ID that's unique for the current page.
+function uniqueId() {
+  return 'id' + nextBackgroundFetchId++;
+}