diff --git a/uni_modules/uts-tests/utssdk/RegExp.uts b/uni_modules/uts-tests/utssdk/RegExp.uts
index 470c33f2059ac5b25ccbb129e393c6227ab9579e..926484feffe4bf516783382c789d70a9b4f8f565 100644
--- a/uni_modules/uts-tests/utssdk/RegExp.uts
+++ b/uni_modules/uts-tests/utssdk/RegExp.uts
@@ -231,6 +231,17 @@ export function testRegExp(): Result {
             const pattern10 = /(?<!@)\w+/;
             const result10 = pattern10.exec('Username: john')!;
             expect(result10[0]).toEqual('Username');
+            
+            
+            const CHUNK_REGEXP =
+                /^(\S*)?\s*(\d*\.?\d+(?:ms|s)?)?\s*(\S*)?\s*(\d*\.?\d+(?:ms|s)?)?$/
+            const match2 = CHUNK_REGEXP.exec('none')
+            expect(match2!![0]).toEqual("none");
+            expect(match2!![1]).toEqual("none");
+            expect(JSON.stringify(match2!![2])).toEqual("null");
+            expect(JSON.stringify(match2!![3])).toEqual("null");
+            expect(JSON.stringify(match2!![4])).toEqual("null");
+            
         })
     })
 }
diff --git a/uni_modules/uts-tests/utssdk/String.uts b/uni_modules/uts-tests/utssdk/String.uts
index 21347e6512530fe557534fc16db62494e814e783..a6a057a3a99d5cbd0aca556f34b6133ccbb47c46 100644
--- a/uni_modules/uts-tests/utssdk/String.uts
+++ b/uni_modules/uts-tests/utssdk/String.uts
@@ -141,7 +141,8 @@ export function testString(): Result {
             const url = '';
             const urlRegex = /^(\w+):\/\/([^\/?#]+)([^?#]*)(\?[^#]*)?(#.*)?$/;
             const match = url.match(urlRegex);
-            expect(match).toEqual(null);
+            expect(JSON.stringify(match)).toEqual("null");
+            
             
         })
         test('padEnd', () => {