getting gradle to execute JUnit Test (Android app, Android Studio) - jenkins

Question

I am currently working on an android app and lately switched from Eclipse to Android Studio (wasn't my idea;)). However I want to configure a jenkins server to run JUnit Tests and other tests on a regularly basis. To achieve this, I try to configure a gradle buidlfile. Here is my setup:
Directory structure:
-app
-src
-main
-test
The build.gradle file: (located in "src/build.gradle)
apply plugin: 'android'
sourceSets {
unitTest {
java.srcDir file('src/test/java/[appName]/app')
}
}
android {
compileSdkVersion 19
buildToolsVersion '19.0.3'
defaultConfig {
minSdkVersion 14
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
sourceSets {
instrumentTest.setRoot('src/test')
}
}
task unitTest(type:Test) {
testClassesDir = sourceSets.unitTest.output.classesDir
classpath = sourceSets.unitTest.runtimeClasspath
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:support-v13:+'
compile 'com.android.support:appcompat-v7:+'
compile 'com.android.support:support-v4:+'
unitTest 'junit:junit:4.10'
}
Testclass MainActivityTest.java
package [appName].app;
import android.test.InstrumentationTestCase;
import junit.framework.Assert;
public class MainActivityTest extends InstrumentationTestCase{
public void testMain(){
Assert.assertEquals(1,2);
}
}
and the most important piece, the error message:
Error:(41, 0) Build script error, unsupported Gradle DSL method found: 'unitTest()'!
It is my first time working with gradle and Android Studio and I have really no clue what I am doing wrong. On the internet I only find people with similar problems, but no one with a solution which worked for me. I'd be really glad if you could point me in the right direction!
Regards

Answer 1

The error message tell that there is no such property unitTest. Test dependency are declared with instrumentTest (old) or androidTest (New).
Android sdk comes already with a junit 3 dependency. So just remove that line

Answer 2

Unit testing doesn't appear to work out of the box in Android Studio. I have a working Gradle configuration that runs unit tests using Robolectric after some minor configurations.
See: Gradlectric
Also to specify a different test folder you need to instead use androidTest:
sourceSets {
androidTest {
setRoot('src/test')
}
}