> I have ported a rather big app to RxJava2, it...

# rx

[dimsuz]

I have ported a rather big app to RxJava2, it compiles and runs, but my unit tests which depend on rx all are failing with this error: java.lang.NoClassDefFoundError: Could not initialize class io.reactivex.android.schedulers.AndroidSchedulers

I kinda figured this out, but still don't know what happens.

So if I call this in @BeforeClass in my unit tests:

fun injectTestingRxSchedulers() {
  RxJavaPlugins.reset()
  RxJavaPlugins.setInitComputationSchedulerHandler { Schedulers.trampoline() }
  RxJavaPlugins.setComputationSchedulerHandler { Schedulers.trampoline() }
  RxAndroidPlugins.reset()
  RxAndroidPlugins.setInitMainThreadSchedulerHandler { Schedulers.trampoline() }
  RxAndroidPlugins.setMainThreadSchedulerHandler { Schedulers.trampoline() }
}

I receive a class def not found errors and also exception-in-initializer errors.

But if I strip it down to only

fun injectTestingRxSchedulers() {
//  RxJavaPlugins.reset()
//  RxJavaPlugins.setInitComputationSchedulerHandler { Schedulers.trampoline() }
//  RxJavaPlugins.setComputationSchedulerHandler { Schedulers.trampoline() }
  RxAndroidPlugins.reset()
  RxAndroidPlugins.setInitMainThreadSchedulerHandler { Schedulers.trampoline() }
  RxAndroidPlugins.setMainThreadSchedulerHandler { Schedulers.trampoline() }
}

then no exceptions are thrown! So this is not a class path error. But some tricky hook-related one, I don't know them that well...