Why does Android Studio say "Test events were not received"?

Question

I'm trying to unit test in my android application, and this is the simple test tutorial what i'm doing.

import static org.junit.Assert.*;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;

@RunWith(RobolectricTestRunner.class)
public class ServerListManagerTest extends AndroidTestCase{

   @Test
   public void testTrueIsTrue() throws Exception {
    assertEquals(true, true);
    }
}

The directory is like this, src\main\androidTest\java\some packages\ServerListManagerTest.java

I tried changing directory of this, and also build configuration. but android studio still doesn't recognize my unit test though build was successful.

This is my build.gradle in app,

apply plugin: 'com.android.application'

android {
   compileSdkVersion 21
   buildToolsVersion "21.1.2"

   defaultConfig {
       applicationId "com.kaist.se.pmpapp"
       minSdkVersion 16
       targetSdkVersion 21
       versionCode 1
       versionName "1.0"
   }

buildTypes {
       release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
      }
sourceSets { main { java.srcDirs = ['src/main/java', 'src/androidTest/java'] } } }



dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.1.1'
    androidTestCompile 'org.robolectric:robolectric:2.4'
    androidTestCompile 'junit:junit:4.12'
    androidTestCompile group: 'junit', name: 'junit', version: '4.12'
  }

What's wrong in my code????

Answer 1

Sometimes you might have simple a compiler issue and end up with this message. This happened to me.. The compiler issue was not pointed out directly had to scroll down on the stack trace to find what is the issue.

Answer 2

I assume you're using Android Studio version 1.2, the latest at this time.

I don't think anything is wrong with your code. According to Jason Atwood's post, the problem seems related to gradle caching the previous results and not running it again. If you look at the "Gradle console", you'll see everything say "UP-TO-DATE". However, his suggestion of adding the "--rerun-tasks" option to the script parameters was not sufficient for me.

In addition to "--rerun-tasks", I had to turn off the in-process build and force it to call the external gradlew tool. To do this, go to...

File > Settings > Build, Execution, Deployment > Compiler

Then un-check the "Use in-process build" option. Hopefully a future release of Android Studio will fix this and we can re-enable that option.