1 files changed, 111 insertions, 0 deletions
diff --git a/devtools/client/aboutdebugging/test/browser/helper-serviceworker.js b/devtools/client/aboutdebugging/test/browser/helper-serviceworker.js
new file mode 100644
index 0000000000..e57b62b7eb
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+++ b/devtools/client/aboutdebugging/test/browser/helper-serviceworker.js
@@ -0,0 +1,111 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from head.js */
+
+/**
+ * Temporarily flip all the preferences necessary for service worker testing.
+ */
+async function enableServiceWorkerDebugging() {
+  // Enable service workers.
+  await pushPref("dom.serviceWorkers.enabled", true);
+
+  // Accept workers from mochitest's http (normally only available in https).
+  await pushPref("dom.serviceWorkers.testing.enabled", true);
+
+  // Force single content process. Necessary until sw e10s refactor is done (Bug 1231208).
+  await pushPref("dom.ipc.processCount", 1);
+  Services.ppmm.releaseCachedProcesses();
+}
+/* exported enableServiceWorkerDebugging */
+
+/**
+ * Helper to listen once on a message sent using postMessage from the provided tab.
+ *
+ * @param {Tab} tab
+ *        The tab on which the message will be received.
+ * @param {String} message
+ *        The name of the expected message.
+ */
+function onServiceWorkerMessage(tab, message) {
+  info("Make the test page notify us when the service worker sends a message.");
+  return SpecialPowers.spawn(
+    tab.linkedBrowser,
+    [message],
+    function (messageChild) {
+      return new Promise(resolve => {
+        const win = content.wrappedJSObject;
+        win.navigator.serviceWorker.addEventListener(
+          "message",
+          function (event) {
+            if (event.data == messageChild) {
+              resolve();
+            }
+          }
+        );
+      });
+    }
+  );
+}
+/* exported onServiceWorkerMessage */
+
+async function _waitForServiceWorkerStatus(workerText, status, document) {
+  await waitUntil(() => {
+    const target = findDebugTargetByText(workerText, document);
+    const statusElement = target && target.querySelector(".qa-worker-status");
+    return statusElement && statusElement.textContent === status;
+  });
+
+  return findDebugTargetByText(workerText, document);
+}
+/* exported waitForServiceWorkerRunning */
+
+async function waitForServiceWorkerStopped(workerText, document) {
+  return _waitForServiceWorkerStatus(workerText, "Stopped", document);
+}
+/* exported waitForServiceWorkerStopped */
+
+async function waitForServiceWorkerRunning(workerText, document) {
+  return _waitForServiceWorkerStatus(workerText, "Running", document);
+}
+/* exported waitForServiceWorkerRunning */
+
+async function waitForServiceWorkerRegistering(workerText, document) {
+  return _waitForServiceWorkerStatus(workerText, "Registering", document);
+}
+/* exported waitForServiceWorkerRegistering */
+
+async function waitForRegistration(tab) {
+  info("Wait until the registration appears on the window");
+  const swBrowser = tab.linkedBrowser;
+  await asyncWaitUntil(async () =>
+    SpecialPowers.spawn(swBrowser, [], async function () {
+      return !!(await content.wrappedJSObject.getRegistration());
+    })
+  );
+}
+/* exported waitForRegistration */
+
+/**
+ * Unregister the service worker from the content page. The content page should define
+ * `getRegistration` to allow this helper to retrieve the service worker registration that
+ * should be unregistered.
+ *
+ * @param {Tab} tab
+ *        The tab on which the service worker should be removed.
+ */
+async function unregisterServiceWorker(tab) {
+  return SpecialPowers.spawn(tab.linkedBrowser, [], function () {
+    const win = content.wrappedJSObject;
+    // Check that the content page defines getRegistration.
+    is(
+      typeof win.getRegistration,
+      "function",
+      "getRegistration is a valid function"
+    );
+    win.getRegistration().unregister();
+  });
+}
+/* exported unregisterServiceWorker */