public async void Update_Entity_Is_Not_Tracked() { Mock <ILogger <PostRepository> > loggerMoc = PostRepositoryMoc.GetLoggerMoc(); ApplicationDbContext context = PostRepositoryMoc.GetContext(); var repository = new PostRepository(loggerMoc.Object, context); Post entity = new Post(); entity.SetProperties(default(int), 2, 2, "B", DateTime.Parse("1/1/1988 12:00:00 AM"), 2, DateTime.Parse("1/1/1988 12:00:00 AM"), DateTime.Parse("1/1/1988 12:00:00 AM"), 2, DateTime.Parse("1/1/1988 12:00:00 AM"), DateTime.Parse("1/1/1988 12:00:00 AM"), "B", 1, 1, 1, 1, 2, "B", "B", 2); context.Set <Post>().Add(entity); await context.SaveChangesAsync(); context.Entry(entity).State = EntityState.Detached; await repository.Update(entity); var records = await context.Set <Post>().ToListAsync(); records.Count.Should().Be(2); }