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import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
import { render, screen, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { server } from './mocks/server'
import { errorHandlers, setMockJobDuration } from './mocks/handlers'
import App from './App'
// Mock NiiVue to avoid WebGL in tests
vi.mock('@niivue/niivue', () => ({
Niivue: class MockNiivue {
attachToCanvas = vi.fn()
loadVolumes = vi.fn().mockResolvedValue(undefined)
cleanup = vi.fn()
gl = {
getExtension: vi.fn(() => ({ loseContext: vi.fn() })),
}
opts = {}
},
}))
describe('App Integration', () => {
// Use real timers for integration tests - fake timers don't sync well
// with MSW's async handlers and polling intervals
beforeEach(() => {
// Reset mock job duration to fast for tests
setMockJobDuration(500) // Jobs complete in 500ms
})
afterEach(() => {
setMockJobDuration(500) // Reset to default
})
describe('Initial Render', () => {
it('renders main heading', () => {
render(<App />)
expect(
screen.getByRole('heading', { name: /stroke lesion segmentation/i })
).toBeInTheDocument()
})
it('renders case selector', async () => {
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
})
it('renders run button', () => {
render(<App />)
expect(
screen.getByRole('button', { name: /run segmentation/i })
).toBeInTheDocument()
})
it('shows placeholder viewer message', () => {
render(<App />)
expect(
screen.getByText(/select a case and run segmentation/i)
).toBeInTheDocument()
})
})
describe('Run Button State', () => {
it('disables run button when no case selected', async () => {
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
expect(
screen.getByRole('button', { name: /run segmentation/i })
).toBeDisabled()
})
it('enables run button when case selected', async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
expect(
screen.getByRole('button', { name: /run segmentation/i })
).toBeEnabled()
})
})
describe('Segmentation Flow', () => {
it('shows processing state when running', async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Button should show "Processing..." while job is running
expect(screen.getByRole('button', { name: /processing/i })).toBeInTheDocument()
})
it('shows progress indicator during job execution', async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Progress indicator should appear during processing
await waitFor(() => {
expect(screen.getByRole('progressbar')).toBeInTheDocument()
})
})
it('displays metrics after successful segmentation', async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Wait for job to complete (mock duration is 500ms, polling is 2s)
// Use 5s timeout to account for polling interval
await waitFor(
() => {
expect(screen.getByText('0.847')).toBeInTheDocument()
},
{ timeout: 5000 }
)
expect(screen.getByText('15.32 mL')).toBeInTheDocument()
})
it('displays viewer after successful segmentation', async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Wait for job to complete and canvas to render
await waitFor(
() => {
expect(document.querySelector('canvas')).toBeInTheDocument()
},
{ timeout: 5000 }
)
})
it('hides placeholder after successful segmentation', async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Wait for job to complete
await waitFor(
() => {
expect(screen.getByText('0.847')).toBeInTheDocument()
},
{ timeout: 5000 }
)
expect(
screen.queryByText(/select a case and run segmentation/i)
).not.toBeInTheDocument()
})
it('shows cancel button during processing', async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
expect(screen.getByRole('button', { name: /cancel/i })).toBeInTheDocument()
})
})
describe('Error Handling', () => {
it('shows error when job creation fails', async () => {
server.use(errorHandlers.segmentCreateError)
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
await waitFor(() => {
expect(screen.getByRole('alert')).toBeInTheDocument()
})
expect(screen.getByText(/failed to create job/i)).toBeInTheDocument()
})
it('allows retry after error', async () => {
server.use(errorHandlers.segmentCreateError)
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
await waitFor(() => {
expect(screen.getByRole('alert')).toBeInTheDocument()
})
// Reset to success handler
server.resetHandlers()
// Retry
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Wait for job to complete (real timer now)
await waitFor(
() => {
expect(screen.getByText('0.847')).toBeInTheDocument()
},
{ timeout: 5000 }
)
expect(screen.queryByRole('alert')).not.toBeInTheDocument()
})
})
describe('Multiple Runs', () => {
it('allows running segmentation on different cases', { timeout: 15000 }, async () => {
const user = userEvent.setup()
render(<App />)
await waitFor(() => {
expect(screen.getByRole('combobox')).toBeInTheDocument()
})
// First case
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0001')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Wait for first segmentation to complete - check metrics (Dice Score proves completion)
await waitFor(
() => {
expect(screen.getByText('0.847')).toBeInTheDocument()
// Button should no longer say "Processing..." after completion
expect(screen.queryByRole('button', { name: /processing/i })).not.toBeInTheDocument()
},
{ timeout: 5000 }
)
// Second case
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0002')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
// Wait for second job to complete - check that case ID changed in metrics
// Note: We look within the metrics container for the case ID to avoid matching dropdown
await waitFor(
() => {
// The metrics panel shows case ID in a span with class "ml-2 font-mono"
// after the "Case:" label
const caseLabels = screen.getAllByText(/Case:/i)
expect(caseLabels.length).toBeGreaterThan(0)
// The second run should show sub-stroke0002 in the metrics
const metricsContainer = screen.getByText('Results').closest('div')
expect(metricsContainer).toHaveTextContent('sub-stroke0002')
},
{ timeout: 5000 }
)
})
})
})
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