1 files changed, 56 insertions, 0 deletions
diff --git a/dom/workers/test/browser_bug1047663.js b/dom/workers/test/browser_bug1047663.js
new file mode 100644
index 0000000000..f55f1152f6
--- /dev/null
+++ b/dom/workers/test/browser_bug1047663.js
@@ -0,0 +1,56 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const EXAMPLE_URL = "https://example.com/browser/dom/workers/test/";
+const TAB_URL = EXAMPLE_URL + "bug1047663_tab.html";
+const WORKER_URL = EXAMPLE_URL + "bug1047663_worker.sjs";
+
+function test() {
+  waitForExplicitFinish();
+
+  (async function () {
+    // Disable rcwn to make cache behavior deterministic.
+    await SpecialPowers.pushPrefEnv({
+      set: [["network.http.rcwn.enabled", false]],
+    });
+
+    let tab = await addTab(TAB_URL);
+
+    // Create a worker. Post a message to it, and check the reply. Since the
+    // server side JavaScript file returns the first source for the first
+    // request, the reply should be "one". If the reply is correct, terminate
+    // the worker.
+    await createWorkerInTab(tab, WORKER_URL);
+    let message = await postMessageToWorkerInTab(tab, WORKER_URL, "ping");
+    is(message, "one");
+    await terminateWorkerInTab(tab, WORKER_URL);
+
+    // Create a second worker with the same URL. Post a message to it, and check
+    // the reply. The server side JavaScript file returns the second source for
+    // all subsequent requests, but since the cache is still enabled, the reply
+    // should still be "one". If the reply is correct, terminate the worker.
+    await createWorkerInTab(tab, WORKER_URL);
+    message = await postMessageToWorkerInTab(tab, WORKER_URL, "ping");
+    is(message, "one");
+    await terminateWorkerInTab(tab, WORKER_URL);
+
+    // Disable the cache in this tab. This should also disable the cache for all
+    // workers in this tab.
+    await disableCacheInTab(tab);
+
+    // Create a third worker with the same URL. Post a message to it, and check
+    // the reply. Since the server side JavaScript file returns the second
+    // source for all subsequent requests, and the cache is now disabled, the
+    // reply should now be "two". If the reply is correct, terminate the worker.
+    await createWorkerInTab(tab, WORKER_URL);
+    message = await postMessageToWorkerInTab(tab, WORKER_URL, "ping");
+    is(message, "two");
+    await terminateWorkerInTab(tab, WORKER_URL);
+
+    removeTab(tab);
+
+    finish();
+  })();
+}