1 files changed, 24 insertions, 0 deletions
diff --git a/toolkit/components/webextensions/test/mochitest/file_teardown_test.js b/toolkit/components/webextensions/test/mochitest/file_teardown_test.js
new file mode 100644
index 000000000..7246012ad
--- /dev/null
+++ b/toolkit/components/webextensions/test/mochitest/file_teardown_test.js
@@ -0,0 +1,24 @@
+"use strict";
+
+/* globals addMessageListener */
+let {Management} = Components.utils.import("resource://gre/modules/Extension.jsm", {});
+let events = [];
+function record(type, extensionContext) {
+  let eventType = type == "proxy-context-load" ? "load" : "unload";
+  let url = extensionContext.uri.spec;
+  let extensionId = extensionContext.extension.id;
+  events.push({eventType, url, extensionId});
+}
+
+Management.on("proxy-context-load", record);
+Management.on("proxy-context-unload", record);
+addMessageListener("cleanup", () => {
+  Management.off("proxy-context-load", record);
+  Management.off("proxy-context-unload", record);
+});
+
+addMessageListener("get-context-events", extensionId => {
+  sendAsyncMessage("context-events", events);
+  events = [];
+});
+sendAsyncMessage("chromescript-startup");