import {fakeAsync, TestBed, tick} from '@angular/core/testing';

import {AnswerService} from './answer.service';
import {timer} from 'rxjs';
import {mapTo} from 'rxjs/operators';
import {GameActionsService} from './game-actions.service';

describe('AnswerService', () => {

  let answerService: AnswerService<any>;
  let gameActionsService: GameActionsService<any>;

  beforeEach(() => {
    TestBed.configureTestingModule({});
    answerService = TestBed.get(AnswerService);
    gameActionsService = TestBed.get(GameActionsService);
  });

  it('should be created', () => {
    const service: AnswerService<any> = TestBed.get(AnswerService);
    expect(service).toBeTruthy();
  });

  it('should send valid answer event after set a new answer', () => {
    setUsualConfig();
    spyOn(answerService.validAnswer, 'emit');
    answerService.currentAnswer = 'A answer';
    expect(answerService.validAnswer.emit).toHaveBeenCalledWith(true);
    answerService['isValidAnswer'] = () => false;
    answerService.currentAnswer = 'Another answer';
    expect(answerService.validAnswer.emit).toHaveBeenCalledWith(false);
  });
  it('on try answer should emit try answer with current answer, and then checkedAnswer with boolean', fakeAsync(() => {
    setUsualConfig();
    spyOn(answerService.tryAnswer, 'emit');
    spyOn(gameActionsService.checkedAnswer, 'emit');
    answerService['checkAnswer'] = () => timer(200).pipe(mapTo(true));
    answerService.onTryAnswer();
    expect(answerService.tryAnswer.emit).toHaveBeenCalledWith('A answer');
    tick(200);
    expect(gameActionsService.checkedAnswer.emit).toHaveBeenCalledWith(true);
  }));

  function setUsualConfig() {
    answerService['isValidAnswer'] = () => true;
    answerService.currentAnswer = 'A answer';
  }
});