public void GetAllGenreNames_ShouldReturnAllGenresWhenNoParameters()
{
// Arrange
_genreRepository.Setup(g => g.GetMany(0, int.MaxValue, null, null, It.IsAny <SortDirection>(), It.IsAny <Expression <Func <Genre, object> >[]>())).Returns(_genres);
// Act
var result = _genreService.GetAllGenreNames();
// Assert
Assert.Equal(result.Count(), _genres.Count());
}