So I\'ve been struggling pretty much all day trying to get Mockito to work for my Android project. I added everything to my Gradle build file:
androidTestCom
For me it helped switching from mockito to powermock. Downgrading mockito to 1.x gave me the null exception, updgrading to 2.x gave me the AbstractMethodError. Just include in dependencies (instead of mockito):
testCompile "org.powermock:powermock-module-junit4:1.6.5"
testCompile "org.powermock:powermock-module-junit4-rule:1.6.5"
testCompile "org.powermock:powermock-api-mockito:1.6.5"
testCompile "org.powermock:powermock-classloading-xstream:1.6.5"