1  package simpleperf.example.kotlin
2  
3  import androidx.test.platform.app.InstrumentationRegistry
4  import androidx.test.ext.junit.runners.AndroidJUnit4
5  
6  import org.junit.Test
7  import org.junit.runner.RunWith
8  
9  import org.junit.Assert.*
10  
11  /**
12   * Instrumented test, which will execute on an Android device.
13   *
14   * See [testing documentation](http://d.android.com/tools/testing).
15   */
16  @RunWith(AndroidJUnit4::class)
17  class ExampleInstrumentedTest {
18      @Test
useAppContextnull19      fun useAppContext() {
20          // Context of the app under test.
21          val appContext = InstrumentationRegistry.getInstrumentation().targetContext
22          assertEquals("simpleperf.example.kotlin", appContext.packageName)
23      }
24  }