1 files changed, 43 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/force_refresh_worker.js b/dom/serviceworkers/test/force_refresh_worker.js
new file mode 100644
index 0000000000..8c8382493a
--- /dev/null
+++ b/dom/serviceworkers/test/force_refresh_worker.js
@@ -0,0 +1,43 @@
+var name = "refresherCache";
+
+self.addEventListener("install", function (event) {
+  event.waitUntil(
+    Promise.all([
+      caches.open(name),
+      fetch("./sw_clients/refresher_cached.html"),
+      fetch("./sw_clients/refresher_cached_compressed.html"),
+    ]).then(function (results) {
+      var cache = results[0];
+      var response = results[1];
+      var compressed = results[2];
+      return Promise.all([
+        cache.put("./sw_clients/refresher.html", response),
+        cache.put("./sw_clients/refresher_compressed.html", compressed),
+      ]);
+    })
+  );
+});
+
+self.addEventListener("fetch", function (event) {
+  event.respondWith(
+    caches
+      .open(name)
+      .then(function (cache) {
+        return cache.match(event.request);
+      })
+      .then(function (response) {
+        // If this is one of our primary cached responses, then the window
+        // must have generated the request via a normal window reload.  That
+        // should be detectable in the event.request.cache attribute.
+        if (response && event.request.cache !== "no-cache") {
+          dump(
+            '### ### FetchEvent.request.cache is "' +
+              event.request.cache +
+              '" instead of expected "no-cache"\n'
+          );
+          return Response.error();
+        }
+        return response || fetch(event.request);
+      })
+  );
+});