1 files changed, 25 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/worker_update.js b/dom/serviceworkers/test/worker_update.js
new file mode 100644
index 0000000000..8935cedc52
--- /dev/null
+++ b/dom/serviceworkers/test/worker_update.js
@@ -0,0 +1,25 @@
+// For now this test only calls update to verify that our registration
+// job queueing works properly when called from the worker thread. We should
+// test actual update scenarios with a SJS test.
+onmessage = function (e) {
+  self.registration
+    .update()
+    .then(function (v) {
+      return v instanceof ServiceWorkerRegistration ? "FINISH" : "FAIL";
+    })
+    .catch(function (ex) {
+      return "FAIL";
+    })
+    .then(function (result) {
+      clients.matchAll().then(function (c) {
+        if (!c.length) {
+          dump(
+            "!!!!!!!!!!! WORKER HAS NO CLIENTS TO FINISH TEST !!!!!!!!!!!!\n"
+          );
+          return;
+        }
+
+        c[0].postMessage(result);
+      });
+    });
+};