public void GivenShortUsername_WhenValidateRegister_ThenReturnValidationErrors() { var command = RegisterConsultantCommandFactory.RegisterConsultantCommandWithShortUsername(); var result = _validator.TestValidate(command); result.IsValid.Should().BeFalse(); result.ShouldHaveAnyValidationError(); result.ShouldHaveValidationErrorFor(c => c.Username) .WithErrorMessage(ValidationErrors.ShortUsername); result.ShouldNotHaveValidationErrorFor(user => user.Email); result.ShouldNotHaveValidationErrorFor(user => user.Location); result.ShouldNotHaveValidationErrorFor(user => user.Password); }