public function testMatchProductByNotExistingTaxonomyNode()
 {
     $productSpec = new ProductSpecification();
     $productSpec->withTaxonomyNodeName('categoryXYZ');
     $products = $this->productGateway->findAll($productSpec);
     if (is_array($products)) {
         $count = count($products);
     } else {
         $count = $products->count();
     }
     $this->assertEquals(0, $count);
 }