import React from 'react';
import {Button} from 'react-md';
import {shallow, mount} from 'enzyme';
import AnswerSource from '../AnswerSource';
import {ANSWER_TYPE} from '../../config/constants';

it ('renders without crashing', () => {
  shallow (<AnswerSource />);
});

describe ('functional tests', () => {
  let wrapper;
  beforeEach (() => {
    const onSaveAnswerTypeFunction = jest.fn ();
    wrapper = mount (
      <AnswerSource onSaveAnswerType={onSaveAnswerTypeFunction} />
    );
    wrapper.setState ({
      isModalOpen: false,
      answerType: 0,
    });
  });

  it ('snapshot', ()=>{
    expect(wrapper).toMatchSnapshot();
  });

  it ('renders only a button', () => {
    expect (wrapper.first ().text ()).toEqual ('Answer type');
    expect (wrapper.find ('AnswerSourceForm').exists ()).toEqual (false);
  });

  it ('answer type button click opens modal form', () => {
    expect (wrapper.find ('AnswerSourceFormA').exists ()).toEqual (false);
    expect (wrapper.state ().isModalOpen).toEqual (false);
    const AnswerTypeButton = wrapper.find ('button').first ();
    AnswerTypeButton.simulate ('click');
    expect (wrapper.state ().isModalOpen).toEqual (true);
    expect (wrapper.find ('AnswerSourceForm').exists ()).toEqual (true);
    expect (wrapper.find ('button').length).toBe (3);
    expect (wrapper.find ('button').first ().text ()).toEqual ('Answer type');
  });

  it ('save button changes answerType value in state and closes the form ', () => {
    const AnswerTypeButton = wrapper.find ('button').first ();
    AnswerTypeButton.simulate ('click');
    const saveButton = wrapper.find ('button').at (2);
    const optionControl = wrapper.find ('SelectionControlGroup');
    expect (saveButton.text ()).toEqual ('Save');
    expect (optionControl.exists ()).toEqual (true);
    optionControl.simulate ('change', {
      target: {value: String (ANSWER_TYPE.EXTERNAL_SOURCE_WP_NEWS)},
    });
    saveButton.simulate ('click');
    expect (wrapper.state ().answerType).toBe (
      ANSWER_TYPE.EXTERNAL_SOURCE_WP_NEWS
    );
    expect (wrapper.state ().isModalOpen).toEqual (false);
    expect (wrapper.find ('button').length).toBe (1);
  });
});