1 files changed, 23 insertions, 0 deletions
diff --git a/dom/workers/test/serviceworkers/blocking_install_event_worker.js b/dom/workers/test/serviceworkers/blocking_install_event_worker.js
new file mode 100644
index 000000000..0bc6f7b7f
--- /dev/null
+++ b/dom/workers/test/serviceworkers/blocking_install_event_worker.js
@@ -0,0 +1,23 @@
+function postMessageToTest(msg) {
+  return clients.matchAll({ includeUncontrolled: true })
+    .then(list => {
+      for (var client of list) {
+        if (client.url.endsWith('test_install_event_gc.html')) {
+          client.postMessage(msg);
+          break;
+        }
+      }
+    });
+}
+
+addEventListener('install', evt => {
+  // This must be a simple promise to trigger the CC failure.
+  evt.waitUntil(new Promise(function() { }));
+  postMessageToTest({ type: 'INSTALL_EVENT' });
+});
+
+addEventListener('message', evt => {
+  if (evt.data.type === 'ping') {
+    postMessageToTest({ type: 'pong' });
+  }
+});