public void RealizarLogoutValido()
        {
            // Arrange
            var controller = new AutenticacaoController();

            Startup.loggedUsers.Add(new User {
                Username = "******", Password = "******", Token = "asd"
            });
            var token = "asd";

            // Act
            var response = controller.Logout(token) as OkResult;
            var expected = (int)HttpStatusCode.OK;

            // Assert
            Assert.NotNull(response);
            Assert.Equal(expected, response.StatusCode);
        }