public async Task DeleteReviewShouldSetIsDeletedAndDeletedOn() { var options = new DbContextOptionsBuilder <AlexandriaDbContext>() .UseInMemoryDatabase(Guid.NewGuid().ToString()) .Options; var db = new AlexandriaDbContext(options); await db.AddRangeAsync( new Review { Description = "description1", AuthorId = "author1", BookId = 1, ReadingProgress = ReadingProgress.Finished, }, new Review { Description = "description2", AuthorId = "author2", BookId = 1, ReadingProgress = ReadingProgress.Finished, }); await db.SaveChangesAsync(); var reviewsService = new ReviewsService(db); await reviewsService.DeleteReviewByIdAsync(1); var result = await db.Reviews.FirstOrDefaultAsync(); Assert.NotNull(result.DeletedOn); Assert.True(result.IsDeleted); }