Android Studio import existing unit tests “Unable to find instrumentation info”

Question

So I\'m trying our Android Studio and testing a project that worked in eclipse. I got everything compiling and the application will launch just fine, but I can\'t get my unit te

Answer 1

This answer is going to explain the history issues and summarise all related settings.

Basically there are 3 possible places for instrumentation test runner configurations.

1. In EditConfigurations -> General tab -> Specific Instrumentation Runner (optional)
   This is existing in Android Studio 2.2 and version before only, in latest version, it is removed already.

2. In manifest file, the test runner is configured as below.

    < instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
           android:targetPackage="com.mytestapp.test"/>

Since "android.test.InstrumentationTestRunner" is deprecated in API level 24, this setting is also not necessary already, as long as you configure the runner in gradle file.
If you want to keep this setting, please make sure the runner name should match to the one you set in the gradle file, otherwise you will got this error also.

3. In gradle file.
   This is the only recommended way if you use Android Studio v2.3 above.

    android {
    .......
        defaultConfig {  
            .......  
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"  
        }   
    }