jest.mock('gulp')
jest.mock('gulp-rev')
const mockRevRewrite = jest.fn()
jest.mock('gulp-rev-rewrite', () => mockRevRewrite)
jest.mock('../../gulpfile.ts/internal')

import * as gulp from 'gulp'
import * as internal from '../../gulpfile.ts/internal'
import { TIMPLA_DEFAULTS } from '../../gulpfile.ts/lib/TIMPLA_DEFAULTS'
import { IFullTimplaConfig } from '../../gulpfile.ts/lib/TIMPLA_INTERFACES'
import { rev as revTask } from '../../gulpfile.ts/tasks/rev'
import { clone } from '../helpers'

const cb = jest.fn()

describe('revTask', () => {
  it('should call the tasks', () => {
    const conf: IFullTimplaConfig = clone(TIMPLA_DEFAULTS)
    const rev = revTask(conf)

    const spySetDisplayName = jest.spyOn(internal, 'setDisplayName')
    const spyRevNapkin = jest.spyOn(internal, 'revNapkin')
    const spySeries = jest.spyOn(gulp, 'series')
    const configuredSpySeries = jest.fn()
    configuredSpySeries.mockImplementation((rb: any) => rb())
    spySeries.mockImplementation((...args) => {
      args.forEach((fn: any) => fn())
      return configuredSpySeries
    })
    spySetDisplayName.mockImplementation((n: any) => n)
    rev(cb)

    expect(cb).toHaveBeenCalled()
    expect(spyRevNapkin).toHaveBeenCalled()
    expect(mockRevRewrite).toHaveBeenCalled()
    const numTasks = 4
    expect(spySeries.mock.calls[0].length).toEqual(numTasks)
  })
})