public async void Update_Entity_Is_Not_Tracked() { Mock <ILogger <PersonTypeRepository> > loggerMoc = PersonTypeRepositoryMoc.GetLoggerMoc(); ApplicationDbContext context = PersonTypeRepositoryMoc.GetContext(); var repository = new PersonTypeRepository(loggerMoc.Object, context); PersonType entity = new PersonType(); entity.SetProperties(default(int), "B"); context.Set <PersonType>().Add(entity); await context.SaveChangesAsync(); context.Entry(entity).State = EntityState.Detached; await repository.Update(entity); var records = await context.Set <PersonType>().ToListAsync(); records.Count.Should().Be(2); }