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import { describe, test, vi, expect } from 'vitest';
import { render, screen } from '@testing-library/react';
import { Button } from './button';
// Test Button component rendering
describe('Button', () => {
// Test default button rendering
test('renders default button with text', () => {
render(<Button>Click Me</Button>);
const button = screen.getByText('Click Me');
expect(button).toBeInTheDocument();
expect(button).toHaveAttribute('data-slot', 'button');
});
// Test buttons with different variants
test('renders button with different variants', () => {
const variants = [
'default',
'destructive',
'outline',
'secondary',
'ghost',
'link',
] as const;
variants.forEach((variant) => {
render(<Button variant={variant}>{variant} Variant</Button>);
const button = screen.getByText(`${variant} Variant`);
expect(button).toBeInTheDocument();
});
});
// Test buttons with different sizes
test('renders button with different sizes', () => {
const sizes = ['default', 'sm', 'lg', 'icon'] as const;
sizes.forEach((size) => {
render(<Button size={size}>{size} Size</Button>);
const button = screen.getByText(`${size} Size`);
expect(button).toBeInTheDocument();
});
});
// Test button click events
test('handles click events', () => {
const handleClick = vi.fn();
render(<Button onClick={handleClick}>Click Test</Button>);
const button = screen.getByText('Click Test');
button.click();
expect(handleClick).toHaveBeenCalledTimes(1);
});
// Test disabled state
test('renders disabled button', () => {
render(<Button disabled>Disabled Button</Button>);
const button = screen.getByText('Disabled Button');
expect(button).toBeDisabled();
});
// Test asChild property
test('renders as a link when asChild is true', () => {
render(
<Button asChild>
<a href="#">As Child Link</a>
</Button>
);
const link = screen.getByText('As Child Link');
expect(link).toBeInTheDocument();
expect(link.tagName).toBe('A');
});
// Test custom className merging
test('merges custom className correctly', () => {
render(<Button className="my-custom-test-class">Custom Class</Button>);
const button = screen.getByText('Custom Class');
// It should have the newly added class
expect(button).toHaveClass('my-custom-test-class');
// It should also retain the base classes defined in cva
expect(button).toHaveClass('inline-flex', 'items-center');
});
// Test native HTML props forwarding
test('passes native HTML attributes correctly', () => {
render(
<Button type="submit" aria-label="Submit Form" data-testid="submit-btn">
Submit
</Button>
);
const button = screen.getByTestId('submit-btn');
expect(button).toHaveAttribute('type', 'submit');
expect(button).toHaveAttribute('aria-label', 'Submit Form');
});
// Optimized: Test buttons with different variants by checking classes
test('applies specific classes for different variants', () => {
render(<Button variant="destructive">Destructive</Button>);
const destructiveButton = screen.getByText('Destructive');
// Verify that the specific Tailwind class from cva is applied
expect(destructiveButton).toHaveClass('bg-destructive', 'text-white');
render(<Button variant="outline">Outline</Button>);
const outlineButton = screen.getByText('Outline');
expect(outlineButton).toHaveClass('border', 'bg-background');
});
});
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