HelloWorld can't run the testing

[icools]

In the Helloworld sample testing , gralde did not include the

testImplementation"androidx.car.app:app-testing:1.0.0-alpha01"

https://developer.android.com/reference/kotlin/androidx/car/app/testing/package-summary

or declare any testing define in the hello world build.gradle

also missing robolectric / junit and others

the car testing can't run.

[icools]

maybe HelloWorld gradle is

`android {
compileSdkVersion 29

defaultConfig {
    applicationId "androidx.car.app.samples.helloworld"
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    minSdkVersion 23
    targetSdkVersion 29
    versionCode 1
    versionName "1.0"
}

compileOptions {
    targetCompatibility = JavaVersion.VERSION_1_8
    sourceCompatibility = JavaVersion.VERSION_1_8
}

}

dependencies {
implementation "androidx.car.app:app:1.0.0"
testImplementation 'junit:junit:4.13.2'
testImplementation "androidx.car.app:app-testing:1.0.0-alpha01"
testImplementation 'androidx.test:runner:1.3.0'
testImplementation "org.robolectric:robolectric:4.4"
testImplementation "androidx.test:core:1.3.0"
testImplementation "com.google.truth:truth:1.0"
androidTestImplementation "com.google.truth:truth::0.40"
}
`