Write first test

packages/ui/src/Button/index.test.tsx

@@ -0,0 +1,17 @@
+import { describe, expect, it, vi } from 'vitest';
+import { Button } from '.';
+import { fireEvent, render } from '@testing-library/react';
+import { ThemeProvider } from '../ThemeProvider';
+
+describe('<Button />', () => {
+  it('calls the passed-in click handler when clicked', () => {
+    const onClick = vi.fn();
+    const { getByText } = render(<Button onClick={onClick}>Click me</Button>, {
+      wrapper: ThemeProvider,
+    });
+
+    fireEvent.click(getByText('Click me'));
+
+    expect(onClick).toHaveBeenCalledOnce();
+  });
+});