node-uci/src/Engine/__test__/stop.test.js

Universal Chess Interface protocol implementation for node.js

import { EOL } from 'os'

import Engine from '../'
import { syncify, engineInit } from '../../__test__/util'

jest.mock('child_process')
import { cpMock } from 'child_process'

describe('stop', () => {
  it('should reject if emitter is not available', async () => {
    const fn = await syncify(async () => {
      await new Engine('').stop()
    })

    expect(fn).toThrow()
  })

  it('should return the bestmove', async () => {
    const engine = await engineInit(cpMock)
    engine.goInfinite()
    const p = engine.stop()
    cpMock.stdout.emit('data', `info score cp 3${EOL}bestmove d7d6`)
    const result = await p

    expect(result).toMatchSnapshot()
  })
})