Espresso Must run under a registering instrumentation

[tekinarslan]

I want to use espresso classes outside of android test package. I added espresso with compile keyword into gradle file and I access espresso classes into normal app classes. But, When I run app, I get an exception as "android espresso Must run under a registering instrumentation."

Our Android studio 3.0.0 and espress 3.0.0.

Thanks.