text: package com.yl.uiautomatordemo;
  
  import org.junit.Test;
  
  import static org.junit.Assert.*;
  
  /**
   * Example local unit test, which will execute on the development machine (host).
   *
   * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
   */
  public class ExampleUnitTest {
      @Test
      public void addition_isCorrect() throws Exception {
          assertEquals(4, 2 + 2);
      }
  }