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

describe('MetricsPanel', () => {
  const defaultMetrics = {
    caseId: 'sub-stroke0001',
    diceScore: 0.847,
    volumeMl: 15.32,
    elapsedSeconds: 12.5,
  }

  it('renders results heading', () => {
    render(<MetricsPanel metrics={defaultMetrics} />)

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

  it('displays case ID', () => {
    render(<MetricsPanel metrics={defaultMetrics} />)

    expect(screen.getByText('sub-stroke0001')).toBeInTheDocument()
  })

  it('displays dice score with 3 decimal places', () => {
    render(<MetricsPanel metrics={defaultMetrics} />)

    expect(screen.getByText('0.847')).toBeInTheDocument()
  })

  it('displays volume in mL with 2 decimal places', () => {
    render(<MetricsPanel metrics={defaultMetrics} />)

    expect(screen.getByText('15.32 mL')).toBeInTheDocument()
  })

  it('displays elapsed time with 1 decimal place', () => {
    render(<MetricsPanel metrics={defaultMetrics} />)

    expect(screen.getByText('12.5s')).toBeInTheDocument()
  })

  it('hides dice score row when null', () => {
    render(
      <MetricsPanel metrics={{ ...defaultMetrics, diceScore: null }} />
    )

    expect(screen.queryByText(/dice score/i)).not.toBeInTheDocument()
  })

  it('hides volume row when null', () => {
    render(
      <MetricsPanel metrics={{ ...defaultMetrics, volumeMl: null }} />
    )

    expect(screen.queryByText(/volume/i)).not.toBeInTheDocument()
  })

  it('applies card styling', () => {
    render(<MetricsPanel metrics={defaultMetrics} />)

    const panel = screen.getByRole('heading', { name: /results/i }).parentElement
    expect(panel).toHaveClass('bg-gray-800', 'rounded-lg')
  })
})