Cannot resolve symbol InstantTaskExecutorRule

Question

I open example code BasicRxJavaSample (from this article Room+RxJava) The main thing is there:

@Rule
public InstantTaskExecutorRule instantTaskExecutorRule          


        

Answer 1

Replace testImplementation by androidTestImplementation. So the tests on folder androidTest can have access to the library.

dependencies {
    androidTestImplementation "androidx.arch.core:core-testing:2.1.0"
}

If you are not using androidx then use android.arch.core:core-testing:1.1.1