Testing, Testing!
The testing artifacts are now available in a 1.3.0-alpha04 version:
androidx.test:monitor:1.3.0-alpha04androidx.test:runner:1.3.0-alpha04androidx.test:orchestrator:1.3.0-alpha04androidx.test:rules:1.3.0-alpha04androidx.test:core:1.3.0-alpha04androidx.test:core-ktx:1.3.0-alpha04androidx.test.espresso:espresso-remote:3.3.0-alpha04androidx.test.espresso:espresso-contrib:3.3.0-alpha04androidx.test.espresso:espresso-core:3.3.0-alpha04androidx.test.espresso:espresso-accessibility:3.3.0-alpha04androidx.test.espresso:espresso-web:3.3.0-alpha04androidx.test.espresso:espresso-intents:3.3.0-alpha04androidx.test.espresso:espresso-idling-resource:3.3.0-alpha04androidx.test.espresso.idling:idling-net:3.3.0-alpha04androidx.test.espresso.idling:idling-concurrent:3.3.0-alpha04androidx.test.ext:truth:1.3.0-alpha04androidx.test.ext:junit:1.1.2-alpha04androidx.test.ext:junit-ktx:1.1.2-alpha04androidx.test.services:test-services:1.3.0-alpha04androidx.test.services:storage:1.3.0-alpha04
Note that androidx.test.services:storage is a new artifact.