1 files changed, 18 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/performance/sw_cacher.js b/dom/serviceworkers/test/performance/sw_cacher.js
new file mode 100644
index 0000000000..5a441ef785
--- /dev/null
+++ b/dom/serviceworkers/test/performance/sw_cacher.js
@@ -0,0 +1,18 @@
+"use strict";
+
+oninstall = function (event) {
+  event.waitUntil(
+    caches.open("perftest").then(function (cache) {
+      return cache.put("cached.txt", new Response("cached.txt"));
+    })
+  );
+};
+
+onfetch = function (event) {
+  if (event.request.url.endsWith("/cached.txt")) {
+    var p = caches.match("cached.txt", { cacheName: "perftest" });
+    event.respondWith(p);
+  } else if (event.request.url.endsWith("/uncached.txt")) {
+    event.respondWith(new Response("uncached.txt"));
+  }
+};