Why can't I import AndroidJUnit4 and ActivityTestRule into my unit test class?

Question

I\'m having trouble importing some of the Android UI testing framework classes - I just can\'t figure out what is going wrong!

This is my class:

@Run         


        

Answer 1

For writing UI tests((tests that run on Android Device/Emulator)) in Android, make sure that

1. The Test classes are in androidTest package rather that test package.

2. Make sure you make the following dependencies in build.gradle

androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test:rules:1.2.0'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
testImplementation 'junit:junit:4.13'

For Unit Testing(tests that run on JVM) make sure

1.Test classes are in test package

2.Make sure you make the following dependencies in build.gradle

testImplementation 'junit:junit:4.13'
testImplementation 'org.mockito:mockito-core:2.23.0'