1 files changed, 45 insertions, 0 deletions
diff --git a/toolkit/mozapps/update/tests/browser/browser_aboutDialog_AppUpdater_stop_internal_error.js b/toolkit/mozapps/update/tests/browser/browser_aboutDialog_AppUpdater_stop_internal_error.js
new file mode 100644
index 0000000000..69c13783bf
--- /dev/null
+++ b/toolkit/mozapps/update/tests/browser/browser_aboutDialog_AppUpdater_stop_internal_error.js
@@ -0,0 +1,45 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+ChromeUtils.defineESModuleGetters(this, {
+  AppUpdater: "resource://gre/modules/AppUpdater.sys.mjs",
+  sinon: "resource://testing-common/Sinon.sys.mjs",
+});
+
+add_setup(function setup_internalErrorTest() {
+  const sandbox = sinon.createSandbox();
+  sandbox.stub(AppUpdater.prototype, "aus").get(() => {
+    throw new Error("intentional test error");
+  });
+  sandbox.stub(AppUpdater.prototype, "checker").get(() => {
+    throw new Error("intentional test error");
+  });
+  sandbox.stub(AppUpdater.prototype, "um").get(() => {
+    throw new Error("intentional test error");
+  });
+  registerCleanupFunction(() => {
+    sandbox.restore();
+  });
+});
+
+// Test that while a download is in-progress, calling `AppUpdater.stop()` while
+// in the "internal error" state doesn't cause a shift to any other state.
+// This is less a test of the About dialog than of AppUpdater, but it's easier
+// to test it via the About dialog just because there is already a testing
+// framework for the About dialog.
+add_task(async function aboutDialog_AppUpdater_stop_internal_error() {
+  let params = {};
+  await runAboutDialogUpdateTest(params, [
+    {
+      panelId: "internalError",
+    },
+    aboutDialog => {
+      aboutDialog.gAppUpdater._appUpdater.stop();
+    },
+    {
+      panelId: "internalError",
+    },
+  ]);
+});