初始化模版工程

components/ui/button.test.tsx

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+import { describe, it, expect, vi } from 'vitest'
+import { render, screen } from '@testing-library/react'
+import userEvent from '@testing-library/user-event'
+import { Button } from './button'
+
+describe('Button', () => {
+  it('renders with default variant', () => {
+    render(<Button>Click me</Button>)
+    const button = screen.getByRole('button', { name: 'Click me' })
+    expect(button).toBeInTheDocument()
+  })
+
+  it('renders as disabled', () => {
+    render(<Button disabled>Disabled</Button>)
+    const button = screen.getByRole('button', { name: 'Disabled' })
+    expect(button).toBeDisabled()
+  })
+
+  it('handles click events', async () => {
+    const user = userEvent.setup()
+    const onClick = vi.fn()
+    render(<Button onClick={onClick}>Click</Button>)
+    await user.click(screen.getByRole('button'))
+    expect(onClick).toHaveBeenCalledTimes(1)
+  })
+
+  it('does not fire click when disabled', async () => {
+    const user = userEvent.setup()
+    const onClick = vi.fn()
+    render(<Button disabled onClick={onClick}>Click</Button>)
+    await user.click(screen.getByRole('button'))
+    expect(onClick).not.toHaveBeenCalled()
+  })
+
+  it('renders with destructive variant', () => {
+    render(<Button variant="destructive">Delete</Button>)
+    const button = screen.getByRole('button', { name: 'Delete' })
+    expect(button.className).toContain('bg-destructive')
+  })
+
+  it('renders with outline variant', () => {
+    render(<Button variant="outline">Outline</Button>)
+    const button = screen.getByRole('button', { name: 'Outline' })
+    expect(button.className).toContain('border')
+  })
+
+  it('renders with different sizes', () => {
+    const { rerender } = render(<Button size="sm">Small</Button>)
+    expect(screen.getByRole('button').className).toContain('h-9')
+
+    rerender(<Button size="lg">Large</Button>)
+    expect(screen.getByRole('button').className).toContain('h-11')
+  })
+
+  it('renders as child with asChild prop', () => {
+    render(
+      <Button asChild>
+        <a href="/test">Link</a>
+      </Button>
+    )
+    const link = screen.getByRole('link', { name: 'Link' })
+    expect(link).toBeInTheDocument()
+    expect(link.tagName).toBe('A')
+  })
+
+  it('applies custom className', () => {
+    render(<Button className="custom-class">Custom</Button>)
+    expect(screen.getByRole('button').className).toContain('custom-class')
+  })
+})