public void SavePassedSongRepositoryWhenIsNotNull()
{
var songRepositoryStub = new Mock <IEfRepository <Song> >();
// Arrange && Act
GetSongForDeleteByIdQueryService sut =
new GetSongForDeleteByIdQueryService(
songRepository: songRepositoryStub.Object);
// Assert
var actualSongRepository = sut.GetType()
.GetFields(BindingFlags.Instance | BindingFlags.NonPublic)
.First(fi => fi.FieldType == typeof(IEfRepository <Song>))
.GetValue(sut);
Assert.AreSame(songRepositoryStub.Object, actualSongRepository);
}
