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import { getNextErrorFeedbackMiddleware } from './get-next-error-feedback-middleware'
import type { IncomingMessage, ServerResponse } from 'http'
describe('getNextErrorFeedbackMiddleware', () => {
const mockTelemetry = {
record: jest.fn().mockResolvedValue({}),
} as any
let mockReq: Partial<IncomingMessage>
let mockRes: Partial<ServerResponse>
let mockNext: jest.Mock
beforeEach(() => {
mockReq = {
url: '/__nextjs_error_feedback?errorCode=TEST_ERROR&wasHelpful=true',
}
mockRes = {
setHeader: jest.fn(),
end: jest.fn(),
}
mockNext = jest.fn()
jest.clearAllMocks()
})
it('calls next() if path does not match', async () => {
mockReq.url = '/some-other-path'
await getNextErrorFeedbackMiddleware(mockTelemetry)(
mockReq as IncomingMessage,
mockRes as ServerResponse,
mockNext
)
expect(mockNext).toHaveBeenCalled()
expect(mockTelemetry.record).not.toHaveBeenCalled()
})
it('records telemetry when feedback is submitted', async () => {
await getNextErrorFeedbackMiddleware(mockTelemetry)(
mockReq as IncomingMessage,
mockRes as ServerResponse,
mockNext
)
expect(mockTelemetry.record).toHaveBeenCalledWith({
eventName: 'NEXT_ERROR_FEEDBACK',
payload: {
errorCode: 'TEST_ERROR',
wasHelpful: true,
},
})
expect(mockRes.statusCode).toBe(204)
})
it('returns 400 if params are missing', async () => {
mockReq.url = '/__nextjs_error_feedback'
await getNextErrorFeedbackMiddleware(mockTelemetry)(
mockReq as IncomingMessage,
mockRes as ServerResponse,
mockNext
)
expect(mockRes.statusCode).toBe(400)
expect(mockTelemetry.record).not.toHaveBeenCalled()
})
it('returns 500 if telemetry recording fails', async () => {
mockTelemetry.record.mockRejectedValueOnce(new Error('Failed to record'))
await getNextErrorFeedbackMiddleware(mockTelemetry)(
mockReq as IncomingMessage,
mockRes as ServerResponse,
mockNext
)
expect(mockRes.statusCode).toBe(500)
})
})
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