makeMockCurryFn.ts

import {
  validateMockCurryFnOptions,
  makeMockFns,
  chainMockCurryFnsReturns,
  setTailMockFnReturnValue,
  makeExpectCurriedMockFns,
} from './utils'
import { MakeMockCurryFnOptions, MakeMockCurryFnReturn } from './typedefs'

export const makeMockCurryFn = (
  options: MakeMockCurryFnOptions
): MakeMockCurryFnReturn => {
  const { nCurriedFns, tailFnReturnValue } = options

  validateMockCurryFnOptions(options)

  const mockFns = makeMockFns(nCurriedFns)
  const tailMockFnIndex = nCurriedFns - 1

  const headMockFn = mockFns[0]
  const tailMockFn = mockFns[tailMockFnIndex]

  chainMockCurryFnsReturns(mockFns)

  setTailMockFnReturnValue(mockFns, tailFnReturnValue)

  const expectMockFnsCalledWith = makeExpectCurriedMockFns({
    mockFns,
    index: 0,
  })

  return {
    expectMockFnsCalledWith,
    headMockFn,
    tailMockFn,
    mockFns,
    options,
  }
}