describe('Component Type and Props', function () {

    it('should be a stateless component', ()=>{
      expect(Login.prototype).toNotBeA(React.Component);
    });

    it('should have the correct props defined', ()=>{
      var propTypes = {
        username: PropTypes.string,
        password: PropTypes.string,
        isValid: PropTypes.bool,
        isWaiting: PropTypes.bool,
        error: PropTypes.object,
        onSignIn: PropTypes.func.isRequired,
        onChange: PropTypes.func.isRequired
      };
      expect(Login.propTypes).toEqual(propTypes);
      //necesitamos comparar estricto porque si no cualquier PropType == PropType
      Object.keys(propTypes).forEach(
        (key)=>expect(propTypes[key]).toBe(Login.propTypes[key])
      );
    });

  });