code: package com.amin.aseproject;
  
  import android.content.Context;
  
  import androidx.test.platform.app.InstrumentationRegistry;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  import static org.junit.Assert.*;
  
  /**
   * Instrumented test, which will execute on an Android device.
   *
   * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
   */
  @RunWith(AndroidJUnit4.class)
  public class ExampleInstrumentedTest {
      @Test
      public void useAppContext() {
          // Context of the app under test.
          Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
          assertEquals("com.amin.aseproject", appContext.getPackageName());
      }
  }