diff --git a/test/utils/product.test.js b/test/utils/product.test.js
index 465bb8f..5b532fc 100644
--- a/test/utils/product.test.js
+++ b/test/utils/product.test.js
@@ -52,7 +52,7 @@ describe('constructProductUrl', () => {
 
   it('should construct the correct product URL without variant', () => {
     const url = constructProductUrl(configWithoutOfferVariantURLTemplate, product1);
-    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/KW5531';
+    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/kw5531';
     assert.strictEqual(url, expectedUrl, 'Product URL without variant does not match expected URL');
   });
 
@@ -65,20 +65,20 @@ describe('constructProductUrl', () => {
 
   it('should construct the correct variant URL without offerVariantURLTemplate', () => {
     const url = constructProductUrl(configWithoutOfferVariantURLTemplate, product1, variant1);
-    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/KW5531/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ==';
+    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/kw5531/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ%3D%3D';
     assert.strictEqual(url, expectedUrl, 'Variant URL without offerVariantURLTemplate does not match expected URL');
   });
 
   // Test Case 4: Encode special characters in sku and urlKey
   it('should correctly encode special characters in sku and urlKey', () => {
     const url = constructProductUrl(configWithoutOfferVariantURLTemplate, productWithSpecialCharacters);
-    const expectedUrl = 'https://www.example.com/products/summer-sun/KW%2055%2F31';
+    const expectedUrl = 'https://www.example.com/products/summer-sun/kw%2055%2F31';
     assert.strictEqual(url, expectedUrl, 'URL with special characters does not match expected URL');
   });
 
   it('should correctly encode special characters in variant sku and selections', () => {
     const url = constructProductUrl(configWithoutOfferVariantURLTemplate, productWithSpecialCharacters, variantWithSpecialSelections);
-    const expectedUrl = 'https://www.example.com/products/summer-sun/KW%2055%2F31/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ==%3D%2CY29uZmlndXJhYmxlLzI0NjEvMzYzNDE=';
+    const expectedUrl = 'https://www.example.com/products/summer-sun/kw%2055%2F31/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ%3D%3D%2CY29uZmlndXJhYmxlLzI0NjEvMzYzNDE%3D';
     assert.strictEqual(url, expectedUrl, 'Variant URL with special characters does not match expected URL');
   });
 
@@ -88,19 +88,19 @@ describe('constructProductUrl', () => {
       selections: [],
     };
     const url = constructProductUrl(configWithoutOfferVariantURLTemplate, product1, variantEmptySelections);
-    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/KW5531/?optionsUIDs=';
+    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/kw5531/?optionsUIDs=';
     assert.strictEqual(url, expectedUrl, 'URL with empty variant selections does not match expected URL');
   });
 
   it('should handle missing matchedPathConfig when variant is present', () => {
     const url = constructProductUrl(configWithoutOfferVariantURLTemplate, product1, variant1);
-    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/KW5531/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ==';
+    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/kw5531/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ%3D%3D';
     assert.strictEqual(url, expectedUrl, 'URL without offerVariantURLTemplate but with variant does not match expected URL');
   });
 
   it('should construct the correct URL when variant is undefined', () => {
     const url = constructProductUrl(configWithOfferVariantURLTemplate, product1);
-    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/KW5531';
+    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant/kw5531';
     assert.strictEqual(url, expectedUrl, 'Product URL with undefined variant does not match expected URL');
   });
 
@@ -114,7 +114,7 @@ describe('constructProductUrl', () => {
       sku: 'ML-2023',
     };
     const url = constructProductUrl(configMultiplePlaceholders, product);
-    const expectedUrl = 'https://www.example.com/shop/modern-lamp/ML-2023/details';
+    const expectedUrl = 'https://www.example.com/shop/modern-lamp/ml-2023/details';
     assert.strictEqual(url, expectedUrl, 'URL with multiple placeholders does not match expected URL');
   });
 
@@ -127,7 +127,7 @@ describe('constructProductUrl', () => {
       },
     };
     const url = constructProductUrl(configEmptyOfferVariantURLTemplate, product1, variant1);
-    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant-KW5531/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ==';
+    const expectedUrl = 'https://www.example.com/products/utopia-small-pendant-kw5531/?optionsUIDs=Y29uZmlndXJhYmxlLzE2NTEvODI3MQ%3D%3D';
     assert.strictEqual(url, expectedUrl, 'URL with empty offerVariantURLTemplate does not match expected URL');
   });
 });