1 files changed, 27 insertions, 0 deletions
diff --git a/toolkit/mozapps/update/tests/browser/browser_aboutDialog_AppUpdater_stop_ready_for_restart.js b/toolkit/mozapps/update/tests/browser/browser_aboutDialog_AppUpdater_stop_ready_for_restart.js
new file mode 100644
index 0000000000..8c9d1f788f
--- /dev/null
+++ b/toolkit/mozapps/update/tests/browser/browser_aboutDialog_AppUpdater_stop_ready_for_restart.js
@@ -0,0 +1,27 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that while a download is in-progress, calling `AppUpdater.stop()` while
+// in the "ready for restart" state doesn't cause a shift to any other state,
+// such as internal error.
+// 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_ready_for_restart() {
+  let params = { backgroundUpdate: true, waitForUpdateState: STATE_PENDING };
+  await runAboutDialogUpdateTest(params, [
+    {
+      panelId: "apply",
+      checkActiveUpdate: { state: STATE_PENDING },
+    },
+    aboutDialog => {
+      aboutDialog.gAppUpdater._appUpdater.stop();
+    },
+    {
+      panelId: "apply",
+      checkActiveUpdate: { state: STATE_PENDING },
+    },
+  ]);
+});