public void test_THAT_gt_expression_IS_determined_properly()
        {
            // arrange
            Expression <Func <SPListItem, bool> > expr = x => (int)x["Count"] > 1;

            var operandBuilder = MockRepository.GenerateStub <IOperandBuilder>();

            operandBuilder.Stub(b => b.CreateFieldRefOperand(expr.Body, null)).Return(null);
            operandBuilder.Stub(b => b.CreateValueOperandForNativeSyntax(expr.Body)).Return(null);

            var analyzer = new GtAnalyzer(null, operandBuilder);

            // act
            var operation = analyzer.GetOperation(expr);

            //assert
            Assert.That(operation, Is.InstanceOf <GtOperation>());
        }