1 files changed, 7 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/claim_oninstall_worker.js b/dom/serviceworkers/test/claim_oninstall_worker.js
new file mode 100644
index 0000000000..6d79c919b0
--- /dev/null
+++ b/dom/serviceworkers/test/claim_oninstall_worker.js
@@ -0,0 +1,7 @@
+oninstall = function(e) {
+  var claimFailedPromise = new Promise(function(resolve, reject) {
+    clients.claim().then(reject, () => resolve());
+  });
+
+  e.waitUntil(claimFailedPromise);
+};