Jest superagent mock in CoffeeScript

superagent.coffee

mockDelay = {}
mockError = {}

mockResponse = {
    status: ->
        return 200
    ok: ->
        return true
    body: {
        walla: true
    }
    get: jest.genMockFunction()
    toError: jest.genMockFunction()
}

Request = {
    post: ->
        this
    get: ->
        this
    send: ->
        this
    query: ->
        this
    field: ->
        this
    set: ->
        this
    accept: ->
        this
    timeout: ->
        this

    end: jest.genMockFunction().mockImplementation((callback) ->
        if mockDelay
            this.delayTimer = setTimeout(callback, 0, mockError, mockResponse)
            return
        callback(mockError, mockResponse)
    )

    # expose helper methods for tests to set
    __setMockDelay: (boolValue) ->
        mockDelay = boolValue

    __setMockResponse: (mockRes) ->
        mockResponse = mockRes

    __setMockError: (mockErr) ->
        mockErr = mockErr
}

module.exports = Request