Exception in thread “main” java.lang.NoClassDefFoundError: junit/textui/ResultPrinter

Question

I\'m trying to compile my Android project in Android Studio 0.3.0. Today I get the following error:

Exception in thread \"main\" java.lang.NoClassDefFoundErr         


        

Answer 1

For standard JUnit tests, you are missing the JUnit library, try adding this in build.gradle:

dependencies {
    ...
    testCompile 'junit:junit:4.12'
    ...
}

And make sure you are putting the tests in the "test" directory parallell to the "main" package (instrumentation tests goes into "androidTest", but that is different setup).