diff --git a/src/test/javascript/spec/util/shared/request.util.spec.ts b/src/test/javascript/spec/util/shared/request.util.spec.ts
new file mode 100644
index 000000000000..e75188913a87
--- /dev/null
+++ b/src/test/javascript/spec/util/shared/request.util.spec.ts
@@ -0,0 +1,35 @@
+import { createNestedRequestOption } from 'app/shared/util/request.util';
+import { HttpParams } from '@angular/common/http';
+
+describe('createNestedRequestOption', () => {
+    it('should create HttpParams with nested keys', () => {
+        const req = { key1: 'value1', key2: 'value2' };
+        const parentKey = 'parent';
+        const params: HttpParams = createNestedRequestOption(req, parentKey);
+
+        expect(params.get('parent.key1')).toBe('value1');
+        expect(params.get('parent.key2')).toBe('value2');
+    });
+
+    it('should create HttpParams without parent key', () => {
+        const req = { key1: 'value1', key2: 'value2' };
+        const params: HttpParams = createNestedRequestOption(req);
+
+        expect(params.get('key1')).toBe('value1');
+        expect(params.get('key2')).toBe('value2');
+    });
+
+    it('should append sort parameters', () => {
+        const req = { sort: ['value1', 'value2'] };
+        const parentKey = 'parent';
+        const params: HttpParams = createNestedRequestOption(req, parentKey);
+
+        expect(params.getAll('parent.sort')).toEqual(['value1', 'value2']);
+    });
+
+    it('should handle empty request object', () => {
+        const params: HttpParams = createNestedRequestOption();
+
+        expect(params.keys()).toHaveLength(0);
+    });
+});
diff --git a/src/test/javascript/spec/util/shared/utils.spec.ts b/src/test/javascript/spec/util/shared/utils.spec.ts
index e1c484866eca..f0be1a533866 100644
--- a/src/test/javascript/spec/util/shared/utils.spec.ts
+++ b/src/test/javascript/spec/util/shared/utils.spec.ts
@@ -11,6 +11,7 @@ import {
 } from 'app/shared/util/utils';
 import { Exercise } from 'app/entities/exercise.model';
 import { Course } from 'app/entities/course.model';
+import { Range } from 'app/shared/util/utils';
 
 describe('Round', () => {
     it('Decimal length', () => {
@@ -91,6 +92,16 @@ describe('average', () => {
     });
 });
 
+describe('Range', () => {
+    it('should return the correct string representation', () => {
+        const range = new Range(10, 50);
+        expect(range.toString()).toBe('[10%, 50%)');
+
+        const rangeInclusive = new Range(0, 100);
+        expect(rangeInclusive.toString()).toBe('[0%, 100%]');
+    });
+});
+
 describe('getAsMutableObject', () => {
     it('should return immutable object as mutable object', () => {
         const immutableObject = Object.freeze({