public void ACadamadaDeNegociosDeveNaoRecuperarUmUsuario_DeveRetornarTipoVazio() { const string email = "*****@*****.**"; var mockContext = new Mock<IAccountRepository>(); mockContext.Setup(x => x.RecuperarUsuario(email)).Returns((User) null); _business = new AccountBusiness(mockContext.Object); var result = _business.VerificarTipoUsuario(email); StringAssert.AreEqualIgnoringCase(result, ""); }