public AddItemCommandValidatorTests()
        {
            _mediatorMock = new Mock <IMediator>();
            _mediatorMock
            .Setup(x => x.Send(It.IsAny <GetArtistCommand>(), CancellationToken.None))
            .ReturnsAsync(() => new ArtistResponse());

            _mediatorMock
            .Setup(x => x.Send(It.IsAny <GetGenreCommand>(), CancellationToken.None))
            .ReturnsAsync(() => new GenreResponse());

            _validator = new AddItemCommandValidator(_mediatorMock.Object);
        }
 public AddItemCommandValidatorTests()
 {
     _validator = new AddItemCommandValidator();
 }