1 files changed, 17 insertions, 0 deletions
diff --git a/devtools/client/aboutdebugging/test/service-workers/delay-sw.js b/devtools/client/aboutdebugging/test/service-workers/delay-sw.js
new file mode 100644
index 000000000..3f16c5058
--- /dev/null
+++ b/devtools/client/aboutdebugging/test/service-workers/delay-sw.js
@@ -0,0 +1,17 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* eslint-env worker */
+
+"use strict";
+
+function wait(ms) {
+  return new Promise(resolve => {
+    setTimeout(resolve, ms);
+  });
+}
+
+// Wait for one second to switch from installing to installed.
+self.addEventListener("install", function (event) {
+  event.waitUntil(wait(1000));
+});