fix empty subscriber claim info on tenant users issue

Author: ShakyaPr

components/apimgt/org.wso2.carbon.apimgt.impl/src/main/java/org/wso2/carbon/apimgt/impl/APIProviderImpl.java

@@ -1745,7 +1745,7 @@ public Map<String, String> getSubscriberClaims(String subscriber) throws APIMana
             tenantId = getTenantId(tenantDomain);
             UserStoreManager userStoreManager = ServiceReferenceHolder.getInstance().getRealmService().
                     getTenantUserRealm(tenantId).getUserStoreManager();
-            if (userStoreManager.isExistingUser(subscriber)) {
+            if (userStoreManager.isExistingUser(MultitenantUtils.getTenantAwareUsername(subscriber))) {
                 subscriberClaims = APIUtil.getClaims(subscriber, tenantId, ClaimsRetriever.DEFAULT_DIALECT_URI);
                 APIManagerConfiguration configuration = getAPIManagerConfiguration();
                 configuredClaims = configuration.getFirstProperty(APIConstants.API_PUBLISHER_SUBSCRIBER_CLAIMS);

components/apimgt/org.wso2.carbon.apimgt.impl/src/test/java/org/wso2/carbon/apimgt/impl/APIProviderImplTest.java

@@ -545,6 +545,7 @@ public void testGetSubscriberClaims() throws APIManagementException, UserStoreEx
         PowerMockito.when(realmService.getTenantUserRealm(-1234)).thenReturn(userRealm);
         PowerMockito.when(userRealm.getUserStoreManager()).thenReturn(userStoreManager);
         PowerMockito.when(userStoreManager.isExistingUser("admin")).thenReturn(true);
+        PowerMockito.when(MultitenantUtils.getTenantAwareUsername("admin")).thenReturn("admin");
 
         SortedMap<String, String> claimValues = new TreeMap<String, String>();
         claimValues.put("claim1", "http://wso2.org/claim1");