TDD Action Creator paso 2

actionCreator.test.js

import { describe, it } from 'mocha';
import expect from 'expect';
import { actionTypes, transactionSuccess } from './actionCreator';

describe('ItemTransactionActions.actionTypes', () => {
  it('should expose TRANSACTION_SUCCESS', () => {
    const actual = actionTypes.TRANSACTION_SUCCESS;
    expect(actual).toExist();
  });
});
describe('ItemTransactionActions.transactionSuccess', () => {
  it('should return the right type', () => {
    const action = transactionSuccess();
    const actual = action.type;
    const expected = actionTypes.TRANSACTION_SUCCESS;
    expect(actual).toBe(expected);
  });
});