// BluesquarePlugin.kt
open class BluesquarePlugin : Plugin<Project> {
    override fun apply(project: Project) {
              project.configureAndroid()
            project.configureDependencies()
    }
}

// Dependencies.kt
const val jUnit = "junit:junit:4.12"
const val androidTestRunner = "com.android.support.test:runner:1.0.2"
const val androidTestRules = "com.android.support.test:rules:1.0.2"
const val mockkAndroid = "io.mockk:mockk-android:1.9"
const val mockk = "io.mockk:mockk:1.9"
const val espressoCore = "com.android.support.test.espresso:espresso-core:3.0.2"

internal fun Project.configureDependencies() = dependencies {
    add("testImplementation", jUnit)

      if (project.containsAndroidPlugin()) {
        add("androidTestImplementation", androidTestRunner)
        add("androidTestImplementation", androidTestRules)
        add("androidTestImplementation", espressoCore)
    }
}

internal fun Project.containsAndroidPlugin(): Boolean {
    return project.plugins.toList().any { plugin -> plugin is AndroidBasePlugin }
}