public void ShouldGetDefaultProperty() { var db = VashiteKinti.Tests.Tests.GetDatabase(); var item1 = new Bank() { Name = "ProCreditBank", }; var item2 = new Bank() { Name = "DSK", }; var items = new GenericDataService <Bank>(db); db.Banks.Add(item1); db.Banks.Add(item2); db.SaveChanges(); var result = items.GetSingleOrDefaultAsync(x => x.Name == "DSK1"); result.Result.Should().Be(null); }