src/components/__tests__/Layout.test.tsx

import { describe, it, expect } from 'vitest'
import { render, screen } from '@testing-library/react'
import { Layout } from '../Layout'

describe('Layout', () => {
  it('renders header with title', () => {
    render(<Layout>Content</Layout>)

    expect(
      screen.getByRole('heading', { name: /stroke lesion segmentation/i })
    ).toBeInTheDocument()
  })

  it('renders subtitle', () => {
    render(<Layout>Content</Layout>)

    expect(screen.getByText(/deepisles segmentation/i)).toBeInTheDocument()
  })

  it('renders children in main area', () => {
    render(
      <Layout>
        <div data-testid="child">Test Child</div>
      </Layout>
    )

    expect(screen.getByTestId('child')).toBeInTheDocument()
  })

  it('has accessible landmark structure', () => {
    render(<Layout>Content</Layout>)

    expect(screen.getByRole('banner')).toBeInTheDocument()
    expect(screen.getByRole('main')).toBeInTheDocument()
  })

  it('applies dark theme styling', () => {
    render(<Layout>Content</Layout>)

    const container = screen.getByRole('banner').parentElement
    expect(container).toHaveClass('bg-gray-950')
  })
})