tests/api/lib/build.gradle

apply plugin: 'android-library'

android {
    compileSdkVersion 15
    buildToolsVersion "18.0.1"
}

// query for all (non-test) variants and inject a new step in the builds
android.libraryVariants.all { variant ->
    // create a task that copies some additional data in the library bundle
    def copyBlahTask = tasks.create(name: "copy${variant.name.capitalize()}Blah", type: Copy) {
        from           file("$project.projectDir/blah")
        destinationDir file("${buildDir}/bundles/${variant.dirName}")
    }

    // now make the package task depend on it
    variant.packageLibrary.dependsOn copyBlahTask
}

project.afterEvaluate {
    if (android.libraryVariants.size() != 2) {
        throw new GradleException("Wrong number of app variants!")
    }
}