第一个测试例子

src/components/Button/button.test.tsx

@@ -0,0 +1,10 @@
+
+import React from 'react';
+import { render } from '@testing-library/react';
+import Button from './button';
+
+test('our first react test case', () => {
+    const wrapper = render(<Button>Nice</Button>);
+    const element = wrapper.queryByText('Nice');
+    expect(element).toBeTruthy();
+})