Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/devtools/shared/tests/xpcshell/test_eventemitter_destroy.js b/devtools/shared/tests/xpcshell/test_eventemitter_destroy.js
new file mode 100644
index 0000000000..e661c37d41
--- /dev/null
+++ b/devtools/shared/tests/xpcshell/test_eventemitter_destroy.js
@@ -0,0 +1,32 @@
+/* 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";
+
+add_task(function() {
+  const { DevToolsLoader, require } = ChromeUtils.import(
+    "resource://devtools/shared/Loader.jsm"
+  );
+
+  // Force-load the module once in the global loader to avoid Bug 1622718.
+  require("devtools/shared/event-emitter");
+
+  const emitterRef = (function() {
+    const loader = new DevToolsLoader();
+
+    const ref = Cu.getWeakReference(
+      loader.require("devtools/shared/event-emitter")
+    );
+
+    loader.destroy();
+    return ref;
+  })();
+
+  Cu.forceGC();
+  Cu.forceCC();
+  Cu.forceGC();
+  Cu.forceCC();
+
+  Assert.ok(!emitterRef.get(), "weakref has been cleared by gc");
+});