Refactor test cases in TestCSBackgroundTask and TestQuery: replace string creation with character array for long values and update list creation to use Arrays.asList for better readability and compatibility.

Author: harshithad0703

src/test/java/com/contentstack/sdk/TestCSBackgroundTask.java

@@ -2,6 +2,7 @@
 
 import org.junit.jupiter.api.Test;
 import java.lang.reflect.Constructor;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 
@@ -105,7 +106,10 @@ void testCheckHeaderWithSpecialCharacters() {
     void testCheckHeaderWithLongValues() {
         CSBackgroundTask task = new CSBackgroundTask();
         HashMap<String, Object> headers = new HashMap<>();
-        String longValue = "a".repeat(1000);
+        // Create a string with 1000 'a' characters (Java 8 compatible)
+        char[] chars = new char[1000];
+        Arrays.fill(chars, 'a');
+        String longValue = new String(chars);
         headers.put("Long-Header", longValue);
 
         assertDoesNotThrow(() -> task.checkHeader(headers));

src/test/java/com/contentstack/sdk/TestQuery.java

@@ -5,6 +5,7 @@
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.LinkedHashMap;
 import java.util.List;
 import static org.junit.jupiter.api.Assertions.*;
@@ -755,8 +756,8 @@ void testSetQueryJsonWithAllFields() throws IllegalAccessException {
         q.where("title", "Test");
         q.except(new String[]{"field1"});
         q.only(new String[]{"field2"});
-        q.onlyWithReferenceUid(List.of("ref_field"), "reference");
-        q.exceptWithReferenceUid(List.of("except_field"), "reference2");
+        q.onlyWithReferenceUid(Arrays.asList("ref_field"), "reference");
+        q.exceptWithReferenceUid(Arrays.asList("except_field"), "reference2");
         q.includeReference("include_ref");
 
         QueryResultsCallBack callback = new QueryResultsCallBack() {