Add app test

.env.test

@@ -1,2 +1,3 @@
 VITE_API_FETCH_URL=http://localhost:5000
-VITE_API_POST_URL=http://localhost:5000
+VITE_API_SET_CONTAINER_LIST_URL=http://localhost:5000/SetContainerList
+VITE_API_GET_FEEDBACK_URL=http://localhost:5000/GetFeedback

src/Components/App/App.test.tsx

@@ -0,0 +1,34 @@
+import * as React from 'react';
+import { loadEnv } from 'vite';
+import { beforeEach, describe, expect, it } from 'vitest';
+import { fireEvent, render, RenderResult, screen } from '../../utils/test-utils';
+import { App } from './App';
+
+describe.concurrent('App', () => {
+  let app: RenderResult;
+
+  beforeEach(() => {
+    app = render(
+      <App root={document} />
+    );
+  });
+
+  it('New editor', async() => {
+    const start = app.getByText(/Start from scratch/i);
+    fireEvent.click(start);
+  }, 10000);
+
+  it('Load editor by file', () => {
+    const load = app.getByText(/Load a configuration file/i);
+    fireEvent.click(load);
+
+    const goBack = app.getByText(/Go back/i);
+    fireEvent.click(goBack);
+
+    const load2 = app.getByText(/Load a configuration file/i);
+    fireEvent.click(load2);
+
+    const chooseFile = app.getByText(/Import Save/i);
+    const inputFile: HTMLInputElement = document.querySelector('input[type="file"]') as HTMLInputElement;
+  });
+});