public void Execute_ReturnsInputExpression_WhenNotValidConstructorArgument()
        {
            _priceRangePipelineNode = new PriceRangePipelineNode(0, 0);
            Expression <Func <Product, bool> > input = product => product.ProductName.Contains(string.Empty);

            var expression = _priceRangePipelineNode.Execute(input);
            var areEquals  = Lambda.Eq(input, expression);

            areEquals.Should().BeTrue();
        }
 public void Setup()
 {
     _priceRangePipelineNode = new PriceRangePipelineNode(MinPrice, MaxPrice);
 }