Why does this fail immediately with `java.lang.IllegalStateException: This job has not completed yet...

# coroutines

[Paul Woitaschek]

Why does this fail immediately with java.lang.IllegalStateException: This job has not completed yet?

kotlin
  @Test
  fun remoteConfigWorks() = runBlockingTest {
    val remoteConfig = FirebaseRemoteConfig.getInstance()
    val worked = suspendCoroutine<Boolean> { cont ->
      remoteConfig.fetch().addOnCompleteListener {
        if (it.isSuccessful) {
          cont.resume(true)
        } else {
          cont.resumeWithException(it.exception ?: AssertionError("Fetching was not succssfull"))
        }
      }
    }
    assertThat(worked).isTrue()
  }

[elizarov]

Can you post a bit larger piece of the stack-trace, please?

[Paul Woitaschek]

Exception in thread "main" java.lang.IllegalStateException: This job has not completed yet
at kotlinx.coroutines.JobSupport.getCompletionExceptionOrNull(JobSupport.kt:1114)
at kotlinx.coroutines.test.TestBuildersKt.runBlockingTest(TestBuilders.kt:53)
at kotlinx.coroutines.test.TestBuildersKt.runBlockingTest$default(TestBuilders.kt:45)
at SamplKt.main(Sampl.kt:8)
at SamplKt.main(Sampl.kt)

[Paul Woitaschek]

A reproducer is actually pretty simple

[Paul Woitaschek]

runBlockingTest {
    suspendCancellableCoroutine<Unit> { cont ->
      thread {
        Thread.sleep(1000)
        cont.resume(Unit)
      }
    }
  }

[Paul Woitaschek]

@elizarov

[elizarov]

Can you, please, file an issue to http://github.com/kotlin/kotlinx.coroutines/issues Thanks in advance!

[Paul Woitaschek]

https://github.com/Kotlin/kotlinx.coroutines/issues/1204