public async void LunchRepository_UpdateTeamAsync_UpdatesTeam()
        {
            // arrange
            LunchContext    context = GetContext();
            LunchRepository target  = new LunchRepository(context);
            const string    Name    = "bob's team";
            const string    Zip     = "90210";
            const string    NewName = "fanny's team";
            const string    NewZip  = "00501";

            int id = await target.CreateTeamAsync(Name, Zip);

            await target.UpdateTeamAsync(id, NewName, NewZip);

            // act

            var result = context.Teams.Where(u => u.Id == id).Single();

            // assert
            Assert.Equal(NewName, result.Name);
            Assert.Equal(NewZip, result.Zip);
        }