diff --git a/uni_modules/uts-tests/utssdk/KeyWord.uts b/uni_modules/uts-tests/utssdk/KeyWord.uts
index a47d673db75d54e612186fae97ce9a4398ceb02b..c4e9313302882820bef5e8f1b550498fcd37f042 100644
--- a/uni_modules/uts-tests/utssdk/KeyWord.uts
+++ b/uni_modules/uts-tests/utssdk/KeyWord.uts
@@ -54,6 +54,12 @@ export function testKeyWord(): Result {
 			expect(instanceRet4).toEqual(true)
 		})
 		
+		test('isArray', () => {
+			let user1:any = new User()
+			expect(Array.isArray(user1)).toEqual(false)
+			expect(Array.isArray([1,2,3])).toEqual(true)
+		})
+		
 		
     })
 }