[#40] ✅ add Link test code

Author: KingNono1030

src/components/common/button/Link.test.tsx

@@ -0,0 +1,39 @@
+import '@testing-library/jest-dom'
+import { fireEvent, render, screen } from '@testing-library/react'
+
+import { Link } from './Link'
+
+describe('Link Component', () => {
+  test('renders the link with correct href', () => {
+    render(<Link href='/test' label='Test Link' />)
+    const linkElement = screen.getByRole('link', { name: /test link/i })
+    expect(linkElement).toHaveAttribute('href', '/test')
+  })
+
+  test('prevents click when disabled', () => {
+    const handleClick = jest.fn()
+    render(
+      <Link href='/test' label='Disabled Link' disabled onClick={handleClick} />
+    )
+
+    const linkElement = screen.getByRole('link', { name: /disabled link/i })
+    fireEvent.click(linkElement)
+    expect(handleClick).not.toHaveBeenCalled()
+    expect(linkElement).toHaveAttribute('aria-disabled', 'true')
+  })
+
+  test('calls onClick when not disabled', () => {
+    const handleClick = jest.fn()
+    render(<Link href='/test' label='Enabled Link' onClick={handleClick} />)
+
+    const linkElement = screen.getByRole('link', { name: /enabled link/i })
+    fireEvent.click(linkElement)
+    expect(handleClick).toHaveBeenCalledTimes(1)
+  })
+
+  test('renders Clickable component with proper props', () => {
+    render(<Link href='/test' label='Clickable Test' />)
+    const clickableElement = screen.getByText(/clickable test/i)
+    expect(clickableElement).toBeInTheDocument()
+  })
+})