How to use await in JUnit cleanup?

Question

In my cleanup function I would like to clear Firebase Realtime Database (emulator).. but to be sure it has succeeded before it goes to the next test, I have to call await..

@After
fun cleanup() {
   ...
   instance.reference.setValue(null).await()
}

However, the cleanup function can not be suspend function.. so how could I achieve this?

thanks!

user_6085193 · Answer

I usually delete nodes and records after query for them, but I guess you can remove the top default root node

Get the reference

      MyFireBaseReference firebaseDbRef = FirebaseDatabase.getInstance().getReference();

then Delete the db or root node

      firebaseDbRef.removeValue();

A sample, please adapt to your needs.. documentation help from Kotlin for you

  fun main() = runBlocking { // this: CoroutineScope

  launch { // launch a new coroutine and continue
    
    println("Blocking and cleaning up DB!") // print after delay

      // get your DB reference
       MyFireBaseReference firebaseDbRef = FirebaseDatabase.getInstance().getReference();

      // then Delete the db or root nod
      firebaseDbRef.removeValue();

 }
 println("Hello") // main coroutine continues while a previous one is delayed
}

How to use await in JUnit cleanup?

1 Answers