node-uci/src/EngineChain/test.spec.js

Universal Chess Interface protocol implementation for node.js

import { Engine, EngineChain } from '../'

describe('EngineChain', () => {
  let chain

  beforeEach(() => {
    chain = new EngineChain(new Engine(''))
  })

  afterEach(() => {
    chain = null
  })

  describe('constructor', () => {
    it('should require a valid Engine', () => {
      const fn = () => {
        new EngineChain()
      }
      expect(fn).toThrow()
    })

    it('should create functions for chainable Engine functions', () => {
      expect(typeof chain.init).toBe('function')
      expect(typeof chain.setoption).toBe('function')
      expect(typeof chain.isready).toBe('function')
      expect(typeof chain.ucinewgame).toBe('function')
      expect(typeof chain.quit).toBe('function')
      expect(typeof chain.position).toBe('function')
      expect(typeof chain.go).toBe('function')
    })
  })

  describe('chain', () => {
    it('should return a function', () => {
      expect(typeof chain.chain('derp')).toBe('function')
    })

    it('chained function should return the chain if funcName !== go', () => {
      const c = chain.init()
      expect(c).toBe(chain)
    })

    it('chained function should call exec() if funcName === go', () => {
      chain.exec = jest.fn()
      chain.go()
      expect(chain.exec).toHaveBeenCalledTimes(1)
    })
  })
})