Android build.gradle adds

Android_tests.gradle

// Root build.gradle
allprojects {
    repositories {
        google()
        jcenter()
        maven { url 'https://jitpack.io' }
    }
}

// Module build.gradle

android {
    testOptions {
        unitTests {
            includeAndroidResources = true
        }
    }
}

dependencies {
    // Libs
    def hamkrest = 'com.natpryce:hamkrest:1.4.2.2'
    def junit = 'junit:junit:4.12'
    def mockito = 'org.mockito:mockito-core:2.13.0'
    def mockito_kotlin = 'com.github.nhaarman:mockito-kotlin:2.0.0-alpha04'

    // Unit Testing (test)
    testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
    testImplementation "$junit"
    testImplementation "$hamkrest"
    testImplementation "$mockito"
    testImplementation "$mockito_kotlin"
    testImplementation 'android.arch.core:core-testing:1.1.1' // Important to test lifecycle

    // Framework Testing (androidTest)
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    androidTestImplementation "org.robolectric:robolectric:3.8"
    androidTestImplementation "org.robolectric:shadows-support-v4:3.3.2"
    androidTestImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
    androidTestImplementation "$junit"
    androidTestImplementation "$hamkrest"
    androidTestImplementation "$mockito"
    androidTestImplementation "$mockito_kotlin"
    androidTestImplementation "org.koin:koin-test:$koin_version"
}

Kotlin_coroutines.gradle

dependencies {
    def coroutines_version = '0.22.5'
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutines_version"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutines_version"
}