1 files changed, 22 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/blocking_install_event_worker.js b/dom/serviceworkers/test/blocking_install_event_worker.js
new file mode 100644
index 0000000000..8ca6201316
--- /dev/null
+++ b/dom/serviceworkers/test/blocking_install_event_worker.js
@@ -0,0 +1,22 @@
+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" });
+  }
+});