public void Should_Fail_By_Empty_Id()
{
// arrange
var command = PatchMemberCommandFake.DemoteMemberInvalidByEmptyId().Generate();
var memberRepository = MemberRepositoryMockBuilder.Create().Build();
var sut = new DemoteMemberValidator(memberRepository)
{
CascadeMode = FluentValidation.CascadeMode.Stop
};
// act
var result = sut.Validate(command);
// assert
result.AssertErrorsCount(1);
}