more code coverage

src/app/alerts/UpdateServerFailure.test.tsx

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2022-2023 The Pybricks Authors
+
+import { Toast } from '@blueprintjs/core';
+import React from 'react';
+import { testRender } from '../../../test';
+import { updateServerFailure } from './UpdateServerFailure';
+
+it('should dismiss when close is clicked', async () => {
+    const callback = jest.fn();
+    const toast = updateServerFailure(callback, undefined as never);
+
+    const [user, message] = testRender(<Toast {...toast} />);
+
+    await user.click(message.getByRole('button', { name: /close/i }));
+
+    expect(callback).toHaveBeenCalledWith('dismiss');
+});