def robolectricDependenciesFolder = new File(rootProject.buildDir, "robolectric-3.2.2-dependencies")

configurations.create('robolectricRuntime')

dependencies {
    robolectricRuntime "org.robolectric:android-all:6.0.1_r3-robolectric-0"
    robolectricRuntime "org.robolectric:shadows-core:3.2.2"
}

rootProject.task(type: Copy, overwrite: true, "downloadRobolectricDependencies") {
    println "downloadRobolectricDependencies into " + robolectricDependenciesFolder
    from configurations.robolectricRuntime
    into robolectricDependenciesFolder
}

project.afterEvaluate {
    tasks.all {
        if (it.name.startsWith("test")) {
            it.dependsOn(rootProject.tasks.findByName("downloadRobolectricDependencies"))
        }
    }
}

android {
    testOptions {
        unitTests.all {
            systemProperty 'robolectric.offline', 'true'
            systemProperty 'robolectric.dependency.dir', robolectricDependenciesFolder
        }
    }
}