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import { describe, it, expect } from 'vitest'
import { renderHook, waitFor, act } from '@testing-library/react'
import { server } from '../../mocks/server'
import { errorHandlers } from '../../mocks/handlers'
import { useSegmentation } from '../useSegmentation'
describe('useSegmentation', () => {
it('starts with null result and not loading', () => {
const { result } = renderHook(() => useSegmentation())
expect(result.current.result).toBeNull()
expect(result.current.isLoading).toBe(false)
expect(result.current.error).toBeNull()
})
it('sets loading state during segmentation', async () => {
const { result } = renderHook(() => useSegmentation())
act(() => {
result.current.runSegmentation('sub-stroke0001')
})
expect(result.current.isLoading).toBe(true)
await waitFor(() => {
expect(result.current.isLoading).toBe(false)
})
})
it('returns result on success', async () => {
const { result } = renderHook(() => useSegmentation())
await act(async () => {
await result.current.runSegmentation('sub-stroke0001')
})
expect(result.current.result).not.toBeNull()
expect(result.current.result?.metrics.caseId).toBe('sub-stroke0001')
expect(result.current.result?.metrics.diceScore).toBe(0.847)
expect(result.current.result?.dwiUrl).toContain('dwi.nii.gz')
})
it('sets error on failure', async () => {
server.use(errorHandlers.segmentServerError)
const { result } = renderHook(() => useSegmentation())
await act(async () => {
await result.current.runSegmentation('sub-stroke0001')
})
expect(result.current.error).toMatch(/segmentation failed/i)
expect(result.current.result).toBeNull()
})
it('clears previous error on new request', async () => {
server.use(errorHandlers.segmentServerError)
const { result } = renderHook(() => useSegmentation())
// First request fails
await act(async () => {
await result.current.runSegmentation('sub-stroke0001')
})
expect(result.current.error).not.toBeNull()
// Reset to success handler
server.resetHandlers()
// Second request succeeds
await act(async () => {
await result.current.runSegmentation('sub-stroke0001')
})
expect(result.current.error).toBeNull()
expect(result.current.result).not.toBeNull()
})
it('clears previous result on new request', async () => {
const { result } = renderHook(() => useSegmentation())
// First request
await act(async () => {
await result.current.runSegmentation('sub-stroke0001')
})
expect(result.current.result).not.toBeNull()
// Start second request - result should clear while loading
act(() => {
result.current.runSegmentation('sub-stroke0002')
})
// While loading, previous result is still available
// (or you could clear it - depends on UX preference)
expect(result.current.isLoading).toBe(true)
})
})
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