'android.support.test.espresso does not exist' when I want to use it to individual apk test

Question

I need to do some auto testing jobs to an Android application without its source code. I found both robotium and espresso can do this job, I decided to use espresso because its

Answer 1

On my app build.gradle this dependency was missing:
androidTestImplementation 'com.android.support.test:rules:1.0.2'