BrightstarDB.Tests.EntityFramework.LinqTests.TestLinqSum C# (CSharp) Метод

        public void TestLinqSum()
        {
            var connectionString = GetConnectionString("TestLinqSum");
            var context = new MyEntityContext(connectionString);

            var e1 = context.TestEntities.Create();
            e1.SomeInt = 10;
            e1.SomeDecimal = 10.1m;
            e1.SomeDouble = 10.2;

            var e2 = context.TestEntities.Create();
            e2.SomeInt = 12;
            e2.SomeDecimal = 12.1m;
            e2.SomeDouble = 12.2;

            var e3 = context.TestEntities.Create();
            e3.SomeInt = 15;
            e3.SomeDecimal = 15.1m;
            e3.SomeDouble = 15.2;

            var e4 = context.TestEntities.Create();
            e4.SomeInt = 10;
            e4.SomeDecimal = 10.1m;
            e4.SomeDouble = 10.2;

            var e5 = context.TestEntities.Create();
            e5.SomeInt = 11;
            e5.SomeDecimal = 11.1m;
            e5.SomeDouble = 11.2;


            context.SaveChanges();
            Assert.AreEqual(5, context.TestEntities.Count());

            var sumInt = context.TestEntities.Sum(e => e.SomeInt);
            Assert.IsNotNull(sumInt);
            Assert.AreEqual(58, sumInt);

            var sumDec = context.TestEntities.Sum(e => e.SomeDecimal);
            Assert.IsNotNull(sumDec);
            Assert.AreEqual(58.5m, sumDec);

            var sumDbl = context.TestEntities.Sum(e => e.SomeDouble);
            Assert.IsNotNull(sumDbl);
            Assert.AreEqual(59.0, sumDbl);

        }