Fixed failing test

Author: cs-raj

lib/core/Util.js

@@ -239,12 +239,20 @@ export const validateAndSanitizeConfig = (config) => {
 }
 
 export const getRegionEndpoint = (region, service = 'contentManagement') => {
+  // Validate input
+  if (!region || typeof region !== 'string') {
+    throw new Error(`Invalid region '${region}' provided. Allowed regions are: ${regionHostMap.regions.map(r => r.id).join(', ')}`)
+  }
+  
+  // Case-sensitive matching: only match exact case
   const regionData = regionHostMap.regions.find(r =>
     r.id === region ||
     r.alias.some(alias => alias === region)
   )
+  
   if (!regionData) {
     throw new Error(`Invalid region '${region}' provided. Allowed regions are: ${regionHostMap.regions.map(r => r.id).join(', ')}`)
   }
+  
   return regionData.endpoints[service]?.replace(/^https?:\/\//, '')
 }