FINERACT-5707: Add unit tests for MathUtil

fineract-core/src/test/java/org/apache/fineract/infrastructure/core/service/IpAddressUtilsTest.java

@@ -1,21 +1,3 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
 package org.apache.fineract.infrastructure.core.service;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
@@ -34,14 +16,14 @@ void clearContext() {
         RequestContextHolder.resetRequestAttributes();
     }
 
-    // Proper isolation helper
+    // Helper method for setting request context
     private void withRequest(HttpServletRequest request, Runnable testLogic) {
         ServletRequestAttributes attributes = new ServletRequestAttributes(request);
         try {
             RequestContextHolder.setRequestAttributes(attributes);
             testLogic.run();
         } finally {
-            RequestContextHolder.resetRequestAttributes(); // critical cleanup
+            RequestContextHolder.resetRequestAttributes();
         }
     }
 
@@ -86,4 +68,4 @@ void getClientIpConvertsNonStringAttributeUsingToString() {
             assertEquals("12345", result);
         });
     }
-}
+}