tests

src/components/__tests__/App.test.jsx

@@ -0,0 +1,21 @@
+import React from 'react';
+import { cleanup, fireEvent, screen } from '@testing-library/react';
+import '@testing-library/jest-dom/extend-expect';
+import { customRender } from '../../customRender';
+import { App } from '../App';
+
+beforeAll(() => {
+  delete window.location;
+  window.location = { replace: jest.fn() };
+});
+
+afterAll(() => {
+  window.location = location;
+});
+
+afterEach(cleanup);
+
+test('renders application', async () => {
+  customRender(<App />);
+  expect(screen.getByText(/plan na plan/i)).toBeInTheDocument();
+});