public void Testa_ShowMeTheCode()
        {
            var controller = new CalculadoraController(_defaultSettings.Object, It.IsAny <IMediator>());

            ActionResult <string> result = controller.ShowMeTheCode();

            Assert.IsNotNull(result);
            Assert.IsNotNull(result.Result);
            Assert.IsInstanceOfType(result.Result, typeof(OkObjectResult));
            Assert.AreEqual((result.Result as ObjectResult).Value, _defaultSettings.Object.Value.GitHubUrl);
        }