reducer.test.js

import reducer, { initialState } from './../reducer';
import * as types from './../types';

describe('#Contact reducers', () => {
  it('O state inicial pode ser retornado', () => {
    expect(reducer(undefined, {})).toEqual(initialState);
  });

  it('#trySubmit', () => {
    const mockedAction = {
      type: types.TRY_SUBMIT
    };

    const result = reducer(undefined, mockedAction);
    expect(result.msg).toEqual('');
  });

  it('#submitSuccess', () => {
    const msg = "Enviado com sucesso";
    const mockedAction = {
      type: types.SUBMIT_FAILURE,
      msg
    };

    const result = reducer(undefined, mockedAction);
    expect(result.msg).toEqual(msg);
  });

  it('#submitFailure', () => {
    const msg = "Erro ao enviar";
    const mockedAction = {
      type: types.SUBMIT_FAILURE,
      msg
    };

    const result = reducer(undefined, mockedAction);
    expect(result.msg).toEqual(msg);
  });
});