Android studio, assembleDebugTest cause Multiple dex files define - unit-testing

Question

trying to run android tests in android studio 0.8.1
I can run assembleDebug and assembleTest properly. But when I try to run the android test it calles assembleDebug and assembleDebugTest and with the latter I get the problem with 'Multiple dex files define'
a few pictures:
and the build.gradle of the project
dependencies {
compile project(':libraries:someLib')
compile ('com.google.android.gms:play-services:5.+')
compile ('fr.avianey:facebook-android-api:+#aar')
compile ('com.fasterxml.jackson.core:jackson-databind:2.3.1')
compile ('com.fasterxml.jackson.core:jackson-core:2.3.1')
compile ('com.fasterxml.jackson.core:jackson-annotations:2.3.0')
compile fileTree(dir: 'libs', include: '*.jar')
//androidTestCompile 'junit:junit:4.10'
//androidTestCompile 'org.robolectric:robolectric:2.1.+'
//androidTestCompile 'com.squareup:fest-android:1.0.+'
//androidTestCompile 'org.powermock:powermock-api-mockito:1.5.1'
}
and the build.gradle of the "someLib"
dependencies {
compile ('com.android.support:appcompat-v7:19.1.+')
compile ('com.nineoldandroids:library:2.4.0')
compile (group: 'com.google.guava', name: 'guava', version: '16.0-rc1')
}
they both share the rest
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.12.+'
}
}
apply plugin: 'com.android.library'
repositories {
mavenCentral()
}
android {
compileSdkVersion 19
buildToolsVersion '19.1.0'
defaultConfig {
minSdkVersion 9
targetSdkVersion 19
}
lintOptions {
abortOnError false
}
}

Answer 1

So far I tried 2 solutions that seems to work but I am pretty sure there has to be something better.
Anyway 1 solution:
tasks.whenTaskAdded { theTask ->
if("assembleDebugTest".toString().equals(theTask.name.toString())) {
def yourTaskName = "cleanLibs"
project.task(yourTaskName) << {
println "${project.buildDir}/intermediates/pre-dexed/test/debug/"
delete fileTree(dir: ("${project.buildDir}/intermediates/pre-dexed/test/debug/"))
}
theTask.dependsOn(yourTaskName)
def processTask = "preDexDebugTest"
project.(yourTaskName.toString()).dependsOn(processTask)
project.(processTask.toString()).dependsOn("compileDebugTestJava")
}
}
this removes the libs before they are created again, it is slow and ungly, let the libs be created, removes them and creates them again
solution 2:
tasks.whenTaskAdded { theTask ->
if("assembleDebugTest".toString().equals(theTask.name.toString())) {
def processTask = "preDexDebugTest"
project.(processTask.toString()).enabled = false
}
}
just skip the task that create the first libs, this is way better than the first one
then for both you have to extend
android {
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/DEPENDENCIES.txt'
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/NOTICE.txt'
exclude 'com/flurry/org/codehaus/jackson/map/VERSION.txt'
exclude 'com/flurry/org/codehaus/jackson/impl/VERSION.txt'
exclude 'com/flurry/org/apache/avro/data/Json.avsc'
exclude 'META-INF/ASL2.0'
}
}
by whatever is twice