问题
I have written instrumentation tests which was working fine, but now getting error cannot resolve ActivityTestRule error after upgrading dependencies to
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
I am using android support version 27.1.1
It is working fine with dependencies
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
回答1:
In the most recent update of the Testing Support Library (2018-04-24), the "rules" dependency was apparently removed from the espresso-core. I'm not sure why this was done, but the release notes say this about the change:
Fixed espresso-core POM file to not pull in "rules" dependency, instead have espresso-intents POM pull it. This should be a NoOp change for developers since espresso-intents cannot be used without espresso-core.
You can fix this problem by adding the following dependency to app/build.gradle:
androidTestImplementation 'com.android.support.test:rules:1.0.2'
来源：https://stackoverflow.com/questions/50062830/cannot-resolve-activitytestrule-after-upgrading-dependencies-unable-to-import-a