Refresh sample code

Signed-off-by: N刘乐 <liule50@huawei.com>

zh-cn/application-dev/application-test/arkxtest-guidelines.md

@@ -108,7 +108,7 @@ UI测试脚本是在单元测试框架的基础上编写，主要就是增加了
 下面的示例代码是在上面的测试脚本基础上增量编写，首先需要增加依赖导包，如下示例代码所示：
 
 ```js
-import {UiDriver,BY,UiComponent,MatchPattern} from '@ohos.uitest'
+import {Driver,ON,Component,MatchPattern} from '@ohos.uitest'
 ```
 
 然后是具体测试代码编写，场景较为简单，就是在启动的应用页面上进行点击操作，然后增加检查点检查用例。
@@ -131,16 +131,16 @@ export default function abilityTest() {
         expect(Ability.context.abilityInfo.name).assertEqual('EntryAbility');
       })
       //ui test code
-      //init uidriver
-      var driver = await UiDriver.create();
+      //init driver
+      var driver = await Driver.create();
       await driver.delayMs(1000);
       //find button by text 'Next'
-      var button = await driver.findComponent(BY.text('Next'));
+      var button = await driver.findComponent(ON.text('Next'));
       //click button
       await button.click();
       await driver.delayMs(1000);
       //check text
-      await driver.assertComponentExist(BY.text('after click'));
+      await driver.assertComponentExist(ON.text('after click'));
       await driver.pressBack();
       done();
     })