private static ILendingLibraryContext SetContextWithDtos(ILendingLibraryContext context, List<ItemDto> items)
 {
     var dbset = new IDbSetSubstituteBuilder<ItemDto>();
     var dbSet = dbset.WithDataStore(new ObservableCollection<ItemDto>(items)).Build();
     context.Items.Returns(dbSet);
     return context;
 }
 private static ILendingLibraryContext SetContextWithDtos(ILendingLibraryContext context, List<PersonDto> people)
 {
     var dbset = new IDbSetSubstituteBuilder<PersonDto>();
     var dbSet = dbset.WithDataStore(new ObservableCollection<PersonDto>(people)).Build();
     context.People.Returns(dbSet);
     return context;
 }