public void Select_TestEntity_To_Int()
        {
            TestEntities = new MockTable <TestEntity>();
            TestEntities.Add(new TestEntity(42), new TestEntity(43), new TestEntity(44),
                             new TestEntity(99), new TestEntity(0));

            IEnumerable <int> returns = TestEntities.Select(item => item.EntityId);
        }
        public void Select_TestEntity_To_Int()
        {
            TestEntities = new MockTable<TestEntity>();
            TestEntities.Add(new TestEntity(42), new TestEntity(43), new TestEntity(44),
                new TestEntity(99), new TestEntity(0) );

            IEnumerable<int> returns = TestEntities.Select(item => item.EntityId);
        }