Type Android Junit4 not present exception

Question

I have an Android project that I am trying to run Instrumentation tests for using AndroidStudio, but when I try to run the whole class file for the tests, I get the exceptions as stated below :

java.lang.TypeNotPresentException: Type android.support.test.runner.AndroidJUnit4 not present Caused by: java.lang.ClassNotFoundException: android.support.test.runner.AndroidJUnit4 

Interestingly, I can run individual methods in this Instrument Test class, just not the whole class. My build.gradle file for the app is below:

apply plugin: 'com.android.application'  apply plugin: 'kotlin-android'  apply plugin: 'kotlin-android-extensions'  android {     lintOptions {         abortOnError false     }     compileSdkVersion 28     defaultConfig {         applicationId "com.sarpuner.journal"         minSdkVersion 19         targetSdkVersion 28         versionCode 1         versionName "1.0"         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"     }     buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'         }     }     buildToolsVersion '27.0.3' }  repositories {     maven { url "https://dl.bintray.com/ijabz/maven" } }  dependencies {     androidTestImplementation 'com.android.support:support-annotations:27.1.1'     implementation fileTree(include: ['*.jar'], dir: 'libs')     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"     implementation 'com.android.support:appcompat-v7:28.0.0-rc01'     implementation 'com.android.support.constraint:constraint-layout:1.1.2'     implementation 'dev.dworks.libs:volleyplus:0.1.4'     implementation 'com.google.code.gson:gson:2.8.2'     testImplementation 'junit:junit:4.12'     androidTestImplementation 'com.android.support.test:rules:1.0.2'     androidTestImplementation 'com.android.support.test:runner:1.0.2'     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'     implementation 'org.jsoup:jsoup:1.11.3'     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.1.1'     implementation 'net.jthink:jaudiotagger:2.2.3'     api 'com.google.guava:guava:26.0-android' } 

And the InstrumentTest class is as follows:

package com.sarpuner.journal  import android.support.test.InstrumentationRegistry import android.support.test.runner.AndroidJUnit4 import android.util.Log     import org.junit.Test import org.junit.runner.RunWith     import org.junit.Assert.* import java.io.File  private const val INSTRUMENT_TAG = "InstrumentTest"  // TODO: There is a problem here with the class run!  @RunWith(AndroidJUnit4::class) class ExampleInstrumentedTest {      private val appContext = InstrumentationRegistry.getTargetContext()      @Test     fun useAppContext() {         // Context of the app under test.         assertEquals("com.sarpuner.journal", appContext.packageName)     }      @Test     fun downloadAndSaveAudio() {         val url = "http://telechargement.rfi.fr/rfi/francais/audio/jff/201808/journal_francais_facile_20h00_-_20h10_tu_20180809.mp3"         val name = "09-08-2018.mp3"         val f = File(appContext.filesDir, name)         Log.d(INSTRUMENT_TAG, f.absolutePath)         downloadAudio(url, f)     }      @Test     fun downloadAndSaveTranscript() {         val url = "https://savoirs.rfi.fr/fr/apprendre-enseigner/langue-francaise/journal-en-francais-facile-09082018-20h00-gmt"         val name = "09-08-2018.txt"         val f = File(appContext.filesDir, name)          downloadText(url, f)     }      @Test     fun addLyricsToAudio() {      } } 

Any help/guidance is much appreciated, thank you.

Answer 1

This is caused by Android Studio trying to execute an instrumentation test as a JUnit test.

I had to go to 'Edit Configurations...' and delete the configuration from Android JUnit group and manually add to the 'Android Instrumented Tests' group. After this I had no problem executing the tests.

In Android Studio, click Run > Edit Configurations.

https://developer.android.com/studio/run/rundebugconfig

Answer 2

Writing steps if someone facing issue while edit configuration for above @Bohsen's answer

1. In Android Studio, click Run > Edit Configurations (or press alt + shift + f10 if on Windows) to open the configuration editor.
2. The left panel of the window shows configurations and their groups.
   • Android JUnit group
   • Android instrumented tests

If your test is an instrumentation test, delete it from any JUnit tests groups.

If your test is a JUnit test, delete it from any instrumentation test groups.

For example, my test (DBTest.kt) was appearing in both Android JUnit and Instrumented group's section. So I deleted from JUnit group and ran it again, it was working fine.