title: Android Test running failed : No Test results
body: <p>Hi i am trying to run the example instrumented test class in my project but everytime i run it i get this error:</p>
  
  <pre><code>Test running failed: no test results
  Empty test suit
  </code></pre>
  
  <p>Here is my example intrumented test class</p>
  
  <pre><code>import org.junit.Assert.assertEquals
  import org.junit.Test
  import org.junit.runner.RunWith
  
  /**
   * Instrumented test, which will execute on an Android device.
   *
   * See [testing documentation](http://d.android.com/tools/testing).
   */
  @RunWith(AndroidJUnit4::class)
  class ExampleInstrumentedTest {
      @Test
      fun useAppContext() {
          // Context of the app under test.
          val appContext = androidx.test.platform.app.InstrumentationRegistry.getInstrumentation().context
          assertEquals("com.app", appContext.packageName)
      }
  }
  </code></pre>
  
  <p>Here is my gradle build filefor tests:</p>
  
  <pre><code>android {
    compileSdkVersion 28
      defaultConfig {
          applicationId "com.app"
          minSdkVersion 21
          targetSdkVersion 28
          versionCode 1
          versionName "1.0"
          testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
          testInstrumentationRunnerArguments clearPackageData: 'true'
  
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
      compileOptions {
          sourceCompatibility JavaVersion.VERSION_1_8
          targetCompatibility JavaVersion.VERSION_1_8
      }
      testOptions {
          execution 'ANDROID_TEST_ORCHESTRATOR'
      }
  }
  
  dependencies {
  
      def mockito = "2.18.3"
  //android instrumental test
      androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
      androidTestImplementation 'androidx.test.ext:junit:1.1.0'
      androidTestImplementation 'androidx.test.ext:truth:1.1.0'
      androidTestImplementation 'androidx.test:core:1.1.0'
      androidTestImplementation 'androidx.test:runner:1.1.1'
      androidTestImplementation 'androidx.arch.core:core-testing:2.0.0'
      androidTestUtil 'androidx.test:orchestrator:1.1.1'
  
      androidTestImplementation 'com.jraska.livedata:testing-ktx:0.6.0'
      androidTestImplementation 'com.jraska.livedata:testing:0.6.0'
  
      androidTestImplementation "org.mockito:mockito-core:$mockito"
      androidTestImplementation "org.mockito:mockito-android:$mockito"
      androidTestImplementation "org.mockito:mockito-inline:$mockito"
  
      androidTestImplementation 'org.koin:koin-test:1.0.2'
  
      //unit test
      testImplementation 'junit:junit:4.12'
      testImplementation "org.mockito:mockito-core:$mockito"
      testImplementation "org.mockito:mockito-android:$mockito"
      testImplementation "org.mockito:mockito-inline:$mockito"
      testImplementation 'org.koin:koin-test:1.0.2'
      testImplementation 'androidx.test.ext:junit:1.1.0'
      testImplementation 'androidx.arch.core:core-testing:2.0.0'
      testImplementation 'com.jraska.livedata:testing-ktx:0.6.0'
      testImplementation 'com.jraska.livedata:testing:0.6.0'
      testImplementation 'androidx.test.ext:truth:1.1.0'
    }
  }
  </code></pre>