1 files changed, 40 insertions, 0 deletions
diff --git a/dom/serviceworkers/test/opaque_intercept_worker.js b/dom/serviceworkers/test/opaque_intercept_worker.js
new file mode 100644
index 0000000000..5dbf6fbc28
--- /dev/null
+++ b/dom/serviceworkers/test/opaque_intercept_worker.js
@@ -0,0 +1,40 @@
+var name = "opaqueInterceptCache";
+
+// Cross origin request to ensure that an opaque response is used
+var prefix = "http://example.com/tests/dom/serviceworkers/test/";
+
+var testReady = new Promise(resolve => {
+  self.addEventListener(
+    "message",
+    m => {
+      resolve();
+    },
+    { once: true }
+  );
+});
+
+self.addEventListener("install", function(event) {
+  var request = new Request(prefix + "notify_loaded.js", { mode: "no-cors" });
+  event.waitUntil(
+    Promise.all([caches.open(name), fetch(request), testReady]).then(function(
+      results
+    ) {
+      var cache = results[0];
+      var response = results[1];
+      return cache.put("./sw_clients/does_not_exist.js", response);
+    })
+  );
+});
+
+self.addEventListener("fetch", function(event) {
+  event.respondWith(
+    caches
+      .open(name)
+      .then(function(cache) {
+        return cache.match(event.request);
+      })
+      .then(function(response) {
+        return response || fetch(event.request);
+      })
+  );
+});