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import { describe, it, expect, vi } from 'vitest'
import { render, screen, waitFor } from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import { server } from './mocks/server'
import { errorHandlers } 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', () => {
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 }))
expect(screen.getByText(/processing/i)).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 }))
await waitFor(() => {
expect(screen.getByText('0.847')).toBeInTheDocument()
})
expect(screen.getByText('15.32 mL')).toBeInTheDocument()
expect(screen.getByText(/12\.5s/)).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 }))
await waitFor(() => {
expect(document.querySelector('canvas')).toBeInTheDocument()
})
})
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 }))
await waitFor(() => {
expect(screen.getByText('0.847')).toBeInTheDocument()
})
expect(
screen.queryByText(/select a case and run segmentation/i)
).not.toBeInTheDocument()
})
})
describe('Error Handling', () => {
it('shows error when segmentation fails', async () => {
server.use(errorHandlers.segmentServerError)
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(/segmentation failed/i)).toBeInTheDocument()
})
it('allows retry after error', async () => {
server.use(errorHandlers.segmentServerError)
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 }))
await waitFor(() => {
expect(screen.getByText('0.847')).toBeInTheDocument()
})
expect(screen.queryByRole('alert')).not.toBeInTheDocument()
})
})
describe('Multiple Runs', () => {
it('allows running segmentation on different cases', 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
await waitFor(() => {
expect(screen.getByText('sub-stroke0001')).toBeInTheDocument()
})
// Wait for button to be ready again (not "Processing...")
await waitFor(() => {
expect(screen.getByRole('button', { name: /run segmentation/i })).toBeInTheDocument()
})
// Second case
await user.selectOptions(screen.getByRole('combobox'), 'sub-stroke0002')
await user.click(screen.getByRole('button', { name: /run segmentation/i }))
await waitFor(() => {
expect(screen.getByText('sub-stroke0002')).toBeInTheDocument()
})
})
})
})
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