diff --git a/src/sprightly/test/extensions/string_extensions_test.dart b/src/sprightly/test/extensions/string_extensions_test.dart
index a1d52e8..9193227 100644
--- a/src/sprightly/test/extensions/string_extensions_test.dart
+++ b/src/sprightly/test/extensions/string_extensions_test.dart
@@ -3,8 +3,25 @@ import 'package:sprightly/extensions/string_extensions.dart';
 
 void main() {
   group('Trimmer test', () {
-    // TODO:
-  }, skip: true);
+    test('trimming() test',(){
+      // arrange
+      final testString =
+          '  abc ';
+      // act
+      final result = testString.trimming(testString);
+      // asset
+      expect(result,'abc');
+    });
+    test('toList test', (){
+      // arrange
+     final List<String> expectedList = ["a", "b", "c", "d", "a"];
+     final testString ='abcda';
+      // act
+      final actaulResult = testString.toList();
+      // asset
+      expect(actaulResult,expectedList);
+     });
+  });
   group('CleanString test', () {
     test('escapeMessy() test', () {
       // arrange