I integrated a custom lint check as explained here, However the checks have no effects on my test code, it generates errors for the java class inside the main folder but not thetest` folder.
I tried to change Scope.JAVA_FILE_SCOPE to Scope.TEST_SOURCES and other values when creating the com.android.tools.lint.detector.api.Implementation however it did not work.
What am I doing wrong? is that not supported?
It is supported, however this only works reliable with Android Studio Plugin 3.0 and later. Also then you'll need to use the Lint Tools 26.0.0 just to be sure.
I construct my Implementation like this new Implementation(MyDetector.class, EnumSet.of(JAVA_FILE, TEST_SOURCES));
I had a similar issue and eventually figured out what I was doing wrong. I was calling gradlew <app>:lintInternalRelease, but release does not acknowledge test classes. gradlew <app>:lintInternalDebug did what I wanted.
