Test Timeout Failures

[adhiamboperes]

I have a test failing with the following error:

There was 1 failure:
1) testActivity_hasCorrectActivityLabel(org.oppia.android.app.profile.CreateAdminPinActivityTest)
java.lang.IllegalStateException: Dispatcher failed to finish flush queue in 10000ms
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:134)
        (Coroutine boundary)
        at org.oppia.android.app.activity.InjectableAppCompatActivity$ensurePlatformParametersAreLoaded$1.invokeSuspend(InjectableAppCompatActivity.kt:65)
Caused by: java.lang.IllegalStateException: Dispatcher failed to finish flush queue in 10000ms
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:134)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.internal.ScopeCoroutine.afterResume(Scopes.kt:33)
        at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:102)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
        at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
        at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl.flushTaskQueueBlocking(TestCoroutineDispatcherRobolectricImpl.kt:128)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl.runCurrent(TestCoroutineDispatcherRobolectricImpl.kt:97)
        at org.oppia.android.testing.threading.TestCoroutineDispatcher.runCurrent$default(TestCoroutineDispatcher.kt:87)
        at org.oppia.android.testing.threading.TestCoroutineDispatchersRobolectricImpl.flushNextTasks(TestCoroutineDispatchersRobolectricImpl.kt:91)
        at org.oppia.android.testing.threading.TestCoroutineDispatchersRobolectricImpl.runCurrent(TestCoroutineDispatchersRobolectricImpl.kt:35)
        at org.oppia.android.testing.platformparameter.TestPlatformParameterModule$providePlatformParameterController$1$loadParametersAsync$1.invokeSuspend(TestPlatformParameterModule.kt:66)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.internal.DispatchedContinuationKt.resumeCancellableWith(DispatchedContinuation.kt:367)
        at kotlinx.coroutines.intrinsics.CancellableKt.startCoroutineCancellable(Cancellable.kt:30)
        at kotlinx.coroutines.intrinsics.CancellableKt.startCoroutineCancellable$default(Cancellable.kt:25)
        at kotlinx.coroutines.CoroutineStart.invoke(CoroutineStart.kt:110)
        at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:126)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.async(Builders.common.kt:91)
        at kotlinx.coroutines.BuildersKt.async(Unknown Source)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.async$default(Builders.common.kt:82)
        at kotlinx.coroutines.BuildersKt.async$default(Unknown Source)
        at org.oppia.android.testing.platformparameter.TestPlatformParameterModule$providePlatformParameterController$1.loadParametersAsync(TestPlatformParameterModule.kt:63)
        at org.oppia.android.app.activity.InjectableAppCompatActivity$ensurePlatformParametersAreLoaded$1.invokeSuspend(InjectableAppCompatActivity.kt:65)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
        at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
        at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
        at org.oppia.android.app.activity.InjectableAppCompatActivity.ensurePlatformParametersAreLoaded(InjectableAppCompatActivity.kt:65)
        at org.oppia.android.app.activity.InjectableAppCompatActivity.attachBaseContext(InjectableAppCompatActivity.kt:35)
        at android.app.Activity.$$robo$$android_app_Activity$attach(Activity.java:7894)
        at android.app.Activity.attach(Activity.java)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.robolectric.shadows._Activity_$$Reflector13.attach(Unknown Source)
        at org.robolectric.shadows._Activity_.callAttach(_Activity_.java:268)
        at org.robolectric.shadows.ShadowActivity.callAttach(ShadowActivity.java:169)
        at org.robolectric.android.controller.ActivityController.attach(ActivityController.java:95)
        at org.robolectric.android.controller.ActivityController.of(ActivityController.java:57)
        at org.robolectric.Robolectric.buildActivity(Robolectric.java:107)
        at org.robolectric.android.internal.RoboMonitoringInstrumentation.startActivitySyncInternal(RoboMonitoringInstrumentation.java:103)
        at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:33)
        at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:38)
        at androidx.test.core.app.ActivityScenario.launchInternal(ActivityScenario.java:272)
        at androidx.test.core.app.ActivityScenario.launch(ActivityScenario.java:229)
        at org.oppia.android.app.profile.CreateAdminPinActivityTest.testActivity_hasCorrectActivityLabel(CreateAdminPinActivityTest.kt:133)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.oppia.android.testing.OppiaTestRule$apply$1.evaluate(OppiaTestRule.kt:45)
        at org.oppia.android.testing.junit.InitializeDefaultLocaleRule$apply$1.evaluate(InitializeDefaultLocaleRule.kt:49)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:591)
        at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:274)
        at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:88)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: kotlinx.coroutines.TimeoutCancellationException: Timed out waiting for 10000 ms
        (Coroutine boundary)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:131)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:130)
Caused by: kotlinx.coroutines.TimeoutCancellationException: Timed out waiting for 10000 ms
        at kotlinx.coroutines.TimeoutKt.TimeoutCancellationException(Timeout.kt:184)
        at kotlinx.coroutines.TimeoutCoroutine.run(Timeout.kt:154)
        at kotlinx.coroutines.EventLoopImplBase$DelayedRunnableTask.run(EventLoop.common.kt:508)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.DefaultExecutor.run(DefaultExecutor.kt:108)
        at java.base/java.lang.Thread.run(Thread.java:829)

FAILURES!!!
Tests run: 2,  Failures: 1

It is a standard activity label test

/** Tests for [CreateAdminPinActivity]. */
@RunWith(AndroidJUnit4::class)
@LooperMode(LooperMode.Mode.PAUSED)
@Config(
  application = CreateAdminPinActivityTest.TestApplication::class,
  qualifiers = "port-xxhdpi"
)
class CreateAdminPinActivityTest {
  @get:Rule
  val initializeDefaultLocaleRule = InitializeDefaultLocaleRule()

  @get:Rule
  val oppiaTestRule = OppiaTestRule()

  @Inject
  lateinit var context: Context

  @Inject
  lateinit var testCoroutineDispatchers: TestCoroutineDispatchers

  @Before
  fun setUp() {
    Intents.init()
    setUpTestApplicationComponent()
  }

  @After
  fun tearDown() {
    Intents.release()
  }

  @Test
  fun testActivity_createIntent_verifyScreenNameInIntent() {
    val screenName = createPinSetupActivityIntent(context).extractCurrentAppScreenName()
    assertThat(screenName).isEqualTo(ScreenName.CREATE_ADMIN_PIN_ACTIVITY)
  }

  @Test
  fun testActivity_hasCorrectActivityLabel() {
    ActivityScenario.launch<CreateAdminPinActivity>(createPinSetupActivityIntent(context))
      .use { scenario ->
        testCoroutineDispatchers.runCurrent()
        scenario?.onActivity { activity ->
          val title = activity.title
          assertThat(title).isEqualTo(
            context.getString(R.string.create_admin_pin_activity_title)
          )
        }
      }
  }

  private fun createPinSetupActivityIntent(context: Context): Intent {
    val profileId = LegacyProfileId.newBuilder().setInternalId(0).build()
    return CreateAdminPinActivity.createAdminPinActivityIntent(context, profileId)
  }

  private fun setUpTestApplicationComponent() {
    ApplicationProvider.getApplicationContext<TestApplication>().inject(this)
  }

  // TODO(#89): Move this to a common test application component.
  @Singleton
  @Component(
    modules = [
      AccessibilityTestModule::class,
      ActivityRecreatorTestModule::class,
      ActivityRouterModule::class,
      AlgebraicExpressionInputModule::class,
      ApplicationLifecycleModule::class,
      ApplicationModule::class,
      ApplicationStartupListenerModule::class,
      AssetModule::class,
      CachingTestModule::class,
      ContinueModule::class,
      CpuPerformanceSnapshotterModule::class,
      DeveloperOptionsModule::class,
      DeveloperOptionsStarterModule::class,
      DragDropSortInputModule::class,
      ExpirationMetaDataRetrieverModule::class,
      ExplorationProgressModule::class,
      ExplorationStorageModule::class,
      FakeOppiaClockModule::class,
      FirebaseLogUploaderModule::class,
      FractionInputModule::class,
      GcsResourceModule::class,
      GlideImageLoaderModule::class,
      HintsAndSolutionConfigModule::class,
      HintsAndSolutionProdModule::class,
      HtmlParserEntityTypeModule::class,
      ImageClickInputModule::class,
      ImageParsingModule::class,
      InteractionsModule::class,
      ItemSelectionInputModule::class,
      LocaleProdModule::class,
      LogReportWorkerModule::class,
      LogStorageModule::class,
      LoggerModule::class,
      LoggingIdentifierModule::class,
      MathEquationInputModule::class,
      MetricLogSchedulerModule::class,
      MultipleChoiceInputModule::class,
      NetworkConfigProdModule::class,
      NetworkConnectionDebugUtilModule::class,
      NetworkConnectionUtilDebugModule::class,
      NumberWithUnitsRuleModule::class,
      NumericExpressionInputModule::class,
      NumericInputRuleModule::class,
      PlatformParameterSingletonModule::class,
      QuestionModule::class,
      RatioInputModule::class,
      RetrofitModule::class,
      RetrofitServiceModule::class,
      RobolectricModule::class,
      SplitScreenInteractionModule::class,
      SyncStatusModule::class,
      TestAuthenticationModule::class,
      TestDispatcherModule::class,
      TestLogReportingModule::class,
      TestPlatformParameterModule::class,
      TestingBuildFlavorModule::class,
      TextInputRuleModule::class,
      ViewBindingShimModule::class,
      WorkManagerConfigurationModule::class
    ]
  )
  interface TestApplicationComponent : ApplicationComponent {
    @Component.Builder
    interface Builder : ApplicationComponent.Builder

    fun inject(createAdminPinActivityTest: CreateAdminPinActivityTest)
  }

  class TestApplication : Application(), ActivityComponentFactory, ApplicationInjectorProvider {
    private val component: TestApplicationComponent by lazy {
      DaggerCreateAdminPinActivityTest_TestApplicationComponent.builder()
        .setApplication(this)
        .build() as TestApplicationComponent
    }

    fun inject(createAdminPinActivityTest: CreateAdminPinActivityTest) {
      component.inject(createAdminPinActivityTest)
    }

    override fun createActivityComponent(activity: AppCompatActivity): ActivityComponent {
      return component.getActivityComponentBuilderProvider().get().setActivity(activity).build()
    }

    override fun getApplicationInjector(): ApplicationInjector = component
  }
}

This is just a debug dump discussion.

[adhiamboperes]

The deadlock chain:

attachBaseContext()
  → ensurePlatformParametersAreLoaded()
    → runBlocking { loadParametersAsync().await() }  // blocks SDK main thread
      → TestPlatformParameterModule.loadParametersAsync()
        → CoroutineScope(Dispatchers.Unconfined).async {
            prodController.loadParametersAsync()
            testCoroutineDispatchers.runCurrent()  // ← tries to flush test dispatchers
          }                                        //   from inside runBlocking on main thread
                                                   //   = deadlock

[BenHenning]

Out of curiosity how did you deduce this? As explained elsewhere in this discussion I haven't actually hit the deadlock even when trying to force it. When I run the test with a compose rule defined, I've verified that parameters are actually loaded first through the activity and it doesn't deadlock at all. I'm still reasoning as to why that's the case, though.

[adhiamboperes]

The test isn't failing to build, it's timing out during execution. The SIGTERM is Bazel killing the test process after it exceeded its time limit.

On CI the test hits the Bazel wall-clock timeout first (SIGTERM), masking the error. On the M4 Mac the machine is fast enough that the test actually completes the 10s internal timeout and surfaces the real IllegalStateException before Bazel's outer timeout fires.

On CI

TIMEOUT: //app:src/sharedTest/java/org/oppia/android/app/profile/CreateAdminPinActivityTest (Summary)
      /home/runner/.cache/bazel/_bazel_runner/ef69b31fa14ea8341d6589b0a8832bdd/execroot/__main__/bazel-out/k8-fastbuild/testlogs/app/src/sharedTest/java/org/oppia/android/app/profile/CreateAdminPinActivityTest/test.log
INFO: From Testing //app:src/sharedTest/java/org/oppia/android/app/profile/CreateAdminPinActivityTest:
==================== Test output for //app:src/sharedTest/java/org/oppia/android/app/profile/CreateAdminPinActivityTest:
JUnit4 Test Runner
.resources.arsc in APK '/home/runner/.cache/bazel/_bazel_runner/ef69b31fa14ea8341d6589b0a8832bdd/sandbox/processwrapper-sandbox/4028/execroot/__main__/bazel-out/k8-fastbuild/bin/app/src/sharedTest/java/org/oppia/android/app/profile/CreateAdminPinActivityTest.runfiles/__main__/../robolectric/bazel/../../org_robolectric_android_all_instrumented_11_robolectric_6757853_i2/android-all-instrumented-11-robolectric-6757853-i2.jar' is compressed.
-- Test timed out at 2026-04-01 14:10:49 UTC --

Received SIGTERM; writing test XML
Done writing test XML
Dumping stack traces for all threads

Starting full thread dump ...

"main" Id=1 WAITING on java.util.concurrent.FutureTask@3cc04389
	at java.base@11.0.15/jdk.internal.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.FutureTask@3cc04389
	at java.base@11.0.15/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
	at java.base@11.0.15/java.util.concurrent.FutureTask.awaitDone(FutureTask.java:447)
	at java.base@11.0.15/java.util.concurrent.FutureTask.get(FutureTask.java:190)
	at app//org.robolectric.internal.bytecode.Sandbox.runOnMainThread(Sandbox.java:96)
	at app//org.robolectric.internal.bytecode.Sandbox.runOnMainThread(Sandbox.java:86)
	at app//org.robolectric.internal.SandboxTestRunner$2.evaluate(SandboxTestRunner.java:243)
	at app//org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at app//org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at app//org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at app//org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at app//org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at app//org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at app//org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at app//org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at app//org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at app//org.robolectric.internal.SandboxTestRunner$1.evaluate(SandboxTestRunner.java:93)
	at app//org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at app//androidx.test.ext.junit.runners.AndroidJUnit4.run(AndroidJUnit4.java:154)
	at app//com.google.testing.junit.runner.internal.junit4.CancellableRequestFactory$CancellableRunner.run(CancellableRequestFactory.java:108)
	at app//org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at app//org.junit.runner.JUnitCore.run(JUnitCore.java:115)
	at app//com.google.testing.junit.runner.junit4.JUnit4Runner.run(JUnit4Runner.java:116)
	at app//com.google.testing.junit.runner.BazelTestRunner.runTestsInSuite(BazelTestRunner.java:145)
	at app//com.google.testing.junit.runner.BazelTestRunner.main(BazelTestRunner.java:76)

"SDK 30 Main Thread @coroutine#24" Id=11 RUNNABLE
	at java.base@11.0.15/java.lang.Thread.setNativeName(Native Method)
	at java.base@11.0.15/java.lang.Thread.setName(Thread.java:1177)
	-  locked java.lang.Thread@6d1b05bb
	at kotlinx.coroutines.CoroutineId.restoreThreadContext(CoroutineContext.kt:271)
	at kotlinx.coroutines.CoroutineId.restoreThreadContext(CoroutineContext.kt:247)
	at kotlinx.coroutines.internal.ThreadContextKt.restoreThreadContext(ThreadContext.kt:94)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:238)
	at androidx.compose.ui.platform.AndroidUiDispatcher.performTrampolineDispatch(AndroidUiDispatcher.android.kt:81)
	at androidx.compose.ui.platform.AndroidUiDispatcher.access$performTrampolineDispatch(AndroidUiDispatcher.android.kt:41)
	at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.run(AndroidUiDispatcher.android.kt:57)
	at android.os.Handler.$$robo$$android_os_Handler$handleCallback(Handler.java:938)
	at java.base@11.0.15/java.lang.invoke.DirectMethodHandle$Holder.invokeStatic(DirectMethodHandle$Holder)
	at java.base@11.0.15/java.lang.invoke.LambdaForm$MH/0x00000008001ea840.guardWithCatch(LambdaForm$MH)
	at java.base@11.0.15/java.lang.invoke.DelegatingMethodHandle$Holder.delegate(DelegatingMethodHandle$Holder)
	at java.base@11.0.15/java.lang.invoke.LambdaForm$MH/0x00000008001eb840.guard(LambdaForm$MH)
	at java.base@11.0.15/java.lang.invoke.LambdaForm$MH/0x00000008001ebc40.linkToCallSite(LambdaForm$MH)
	at android.os.Handler.handleCallback(Handler.java)
	at android.os.Handler.$$robo$$android_os_Handler$dispatchMessage(Handler.java:99)
	at java.base@11.0.15/java.lang.invoke.DirectMethodHandle$Holder.invokeSpecial(DirectMethodHandle$Holder)
	at java.base@11.0.15/java.lang.invoke.LambdaForm$MH/0x00000008001f2c40.guardWithCatch(LambdaForm$MH)
	at java.base@11.0.15/java.lang.invoke.DelegatingMethodHandle$Holder.delegate(DelegatingMethodHandle$Holder)
	at java.base@11.0.15/java.lang.invoke.LambdaForm$MH/0x00000008001f4840.guard(LambdaForm$MH)
	at java.base@11.0.15/java.lang.invoke.LambdaForm$MH/0x00000008001f4c40.linkToCallSite(LambdaForm$MH)
	at android.os.Handler.dispatchMessage(Handler.java)
	at org.robolectric.shadows.ShadowPausedLooper$IdlingRunnable.run(ShadowPausedLooper.java:332)
	at org.robolectric.shadows.ShadowPausedLooper.executeOnLooper(ShadowPausedLooper.java:366)
	at org.robolectric.shadows.ShadowPausedLooper.idle(ShadowPausedLooper.java:92)
	at org.robolectric.shadows.ShadowPausedLooper.idleIfPaused(ShadowPausedLooper.java:163)
	at org.robolectric.android.controller.ActivityController.visible(ActivityController.java:177)
	at org.robolectric.android.internal.RoboMonitoringInstrumentation.startActivitySyncInternal(RoboMonitoringInstrumentation.java:110)
	at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:33)
	at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:38)
	at androidx.test.core.app.ActivityScenario.launchInternal(ActivityScenario.java:272)
	at androidx.test.core.app.ActivityScenario.launch(ActivityScenario.java:229)
	at org.oppia.android.app.profile.CreateAdminPinActivityTest.testActivity_hasCorrectActivityLabel(CreateAdminPinActivityTest.kt:133)
	at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base@11.0.15/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base@11.0.15/java.lang.reflect.Method.invoke(Method.java:566)
	at app//org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at app//org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at app//org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at app//org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at app//org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at app//org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.oppia.android.testing.OppiaTestRule$apply$1.evaluate(OppiaTestRule.kt:45)
	at org.oppia.android.testing.junit.InitializeDefaultLocaleRule$apply$1.evaluate(InitializeDefaultLocaleRule.kt:49)
	at app//org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at app//org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:591)
	at app//org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:274)
	at app//org.robolectric.internal.SandboxTestRunner$2$$Lambda$81/0x00000008001c9040.run(Unknown Source)
	at app//org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:88)
	at app//org.robolectric.internal.bytecode.Sandbox$$Lambda$82/0x00000008001c9440.call(Unknown Source)
	at java.base@11.0.15/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base@11.0.15/java.lang.Thread.run(Thread.java:829)

	Number of locked synchronizers = 1
	- java.util.concurrent.ThreadPoolExecutor$Worker@119cbf96

"pool-3-thread-1" Id=14 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@5f3433e5
	at java.base@11.0.15/jdk.internal.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@5f3433e5
	at java.base@11.0.15/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
	at java.base@11.0.15/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2081)
	at java.base@11.0.15/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:433)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base@11.0.15/java.lang.Thread.run(Thread.java:829)

"pool-1-thread-1" Id=16 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@60da651
	at java.base@11.0.15/jdk.internal.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@60da651
	at java.base@11.0.15/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
	at java.base@11.0.15/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2081)
	at java.base@11.0.15/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:433)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base@11.0.15/java.lang.Thread.run(Thread.java:829)

"pool-4-thread-1" Id=17 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@330e4df6
	at java.base@11.0.15/jdk.internal.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@330e4df6
	at java.base@11.0.15/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
	at java.base@11.0.15/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2081)
	at java.base@11.0.15/java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:433)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1054)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1114)
	at java.base@11.0.15/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base@11.0.15/java.lang.Thread.run(Thread.java:829)

On M4 Mac

There was 1 failure:
1) testActivity_hasCorrectActivityLabel(org.oppia.android.app.profile.CreateAdminPinActivityTest)
java.lang.IllegalStateException: Dispatcher failed to finish flush queue in 10000ms
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:134)
        (Coroutine boundary)
        at org.oppia.android.app.activity.InjectableAppCompatActivity$ensurePlatformParametersAreLoaded$1.invokeSuspend(InjectableAppCompatActivity.kt:65)
Caused by: java.lang.IllegalStateException: Dispatcher failed to finish flush queue in 10000ms
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:134)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.internal.ScopeCoroutine.afterResume(Scopes.kt:33)
        at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:102)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
        at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
        at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl.flushTaskQueueBlocking(TestCoroutineDispatcherRobolectricImpl.kt:128)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl.runCurrent(TestCoroutineDispatcherRobolectricImpl.kt:97)
        at org.oppia.android.testing.threading.TestCoroutineDispatcher.runCurrent$default(TestCoroutineDispatcher.kt:87)
        at org.oppia.android.testing.threading.TestCoroutineDispatchersRobolectricImpl.flushNextTasks(TestCoroutineDispatchersRobolectricImpl.kt:91)
        at org.oppia.android.testing.threading.TestCoroutineDispatchersRobolectricImpl.runCurrent(TestCoroutineDispatchersRobolectricImpl.kt:35)
        at org.oppia.android.testing.platformparameter.TestPlatformParameterModule$providePlatformParameterController$1$loadParametersAsync$1.invokeSuspend(TestPlatformParameterModule.kt:66)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.internal.DispatchedContinuationKt.resumeCancellableWith(DispatchedContinuation.kt:367)
        at kotlinx.coroutines.intrinsics.CancellableKt.startCoroutineCancellable(Cancellable.kt:30)
        at kotlinx.coroutines.intrinsics.CancellableKt.startCoroutineCancellable$default(Cancellable.kt:25)
        at kotlinx.coroutines.CoroutineStart.invoke(CoroutineStart.kt:110)
        at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:126)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.async(Builders.common.kt:91)
        at kotlinx.coroutines.BuildersKt.async(Unknown Source)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.async$default(Builders.common.kt:82)
        at kotlinx.coroutines.BuildersKt.async$default(Unknown Source)
        at org.oppia.android.testing.platformparameter.TestPlatformParameterModule$providePlatformParameterController$1.loadParametersAsync(TestPlatformParameterModule.kt:63)
        at org.oppia.android.app.activity.InjectableAppCompatActivity$ensurePlatformParametersAreLoaded$1.invokeSuspend(InjectableAppCompatActivity.kt:65)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
        at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
        at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
        at org.oppia.android.app.activity.InjectableAppCompatActivity.ensurePlatformParametersAreLoaded(InjectableAppCompatActivity.kt:65)
        at org.oppia.android.app.activity.InjectableAppCompatActivity.attachBaseContext(InjectableAppCompatActivity.kt:35)
        at android.app.Activity.$$robo$$android_app_Activity$attach(Activity.java:7894)
        at android.app.Activity.attach(Activity.java)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.robolectric.shadows._Activity_$$Reflector13.attach(Unknown Source)
        at org.robolectric.shadows._Activity_.callAttach(_Activity_.java:268)
        at org.robolectric.shadows.ShadowActivity.callAttach(ShadowActivity.java:169)
        at org.robolectric.android.controller.ActivityController.attach(ActivityController.java:95)
        at org.robolectric.android.controller.ActivityController.of(ActivityController.java:57)
        at org.robolectric.Robolectric.buildActivity(Robolectric.java:107)
        at org.robolectric.android.internal.RoboMonitoringInstrumentation.startActivitySyncInternal(RoboMonitoringInstrumentation.java:103)
        at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:33)
        at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:38)
        at androidx.test.core.app.ActivityScenario.launchInternal(ActivityScenario.java:272)
        at androidx.test.core.app.ActivityScenario.launch(ActivityScenario.java:229)
        at org.oppia.android.app.profile.CreateAdminPinActivityTest.testActivity_hasCorrectActivityLabel(CreateAdminPinActivityTest.kt:133)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.oppia.android.testing.OppiaTestRule$apply$1.evaluate(OppiaTestRule.kt:45)
        at org.oppia.android.testing.junit.InitializeDefaultLocaleRule$apply$1.evaluate(InitializeDefaultLocaleRule.kt:49)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:591)
        at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:274)
        at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:88)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: kotlinx.coroutines.TimeoutCancellationException: Timed out waiting for 10000 ms
        (Coroutine boundary)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:131)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:130)
Caused by: kotlinx.coroutines.TimeoutCancellationException: Timed out waiting for 10000 ms
        at kotlinx.coroutines.TimeoutKt.TimeoutCancellationException(Timeout.kt:184)
        at kotlinx.coroutines.TimeoutCoroutine.run(Timeout.kt:154)
        at kotlinx.coroutines.EventLoopImplBase$DelayedRunnableTask.run(EventLoop.common.kt:508)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.DefaultExecutor.run(DefaultExecutor.kt:108)
        at java.base/java.lang.Thread.run(Thread.java:829)

FAILURES!!!
Tests run: 2,  Failures: 1

[BenHenning]

When I run the test without a fix locally I also get the CI issue which I think is a livelock caused by Compose's choreographer initiating (i.e. from animations or something) not cooperating correctly with the Robolectric main thread management (or something similar). Adding this line fixes your test for me locally with no other changes:

  @get:Rule val composeRule = createEmptyComposeRule()

(Which I copied from other Compose tests).

[adhiamboperes]

Unfortunately, this doesn't do anything for me.

In addition to the synchronization issues, I think this Compose screen might have additional other issues contributing to the problem.

I have only needed the compose rule in Fragment tests before, not activity tests like

oppia-android/app/src/sharedTest/java/org/oppia/android/app/profile/ProfileLoginActivityTest.kt

Lines 101 to 112 in f70f6f0

	class ProfileLoginActivityTest {
	@get:Rule
	val initializeDefaultLocaleRule = InitializeDefaultLocaleRule()
	@get:Rule
	val oppiaTestRule = OppiaTestRule()
	@Inject
	lateinit var context: Context
	@Inject
	lateinit var testCoroutineDispatchers: TestCoroutineDispatchers

[adhiamboperes]

Claude suggests that loadParametersAsync() in the anonymous controller doesn't need to do any async work at all, it can return an already-completed deferred:

override fun loadParametersAsync(): Deferred<Unit> {
    // Parameters are guaranteed loaded during graph construction in
    // providePlatformParameterProcessState. Nothing async needed here.
    return CompletableDeferred(Unit)
}

This is supposed to work because Dagger guarantees providePlatformParameterProcessState runs before any activity is created, so by the time ensurePlatformParametersAreLoaded calls loadParametersAsync() from inside runBlocking, it gets back an instantly-completed CompletableDeferred(Unit) and await() returns immediately without blocking(according to Claude).

I did try modifying the TestPlatformParameterModule this way, which does seem to get rid of the deadlock, but I still cannot explain why other test suites never triggered ensurePlatformParametersAreLoaded in a way that hit this path, or why this specifc test suite cannot load the parameters by the time the activity launched (from Dagger graph construction in providePlatformParameterProcessState, where runCurrent() is called outside runBlocking and can succeed).

[BenHenning]

Talked about this in the meeting a bit but erasing that line will just outright break platform parameters so if the test doesn't require them then it would run without the locking (and thus look fixed).

[adhiamboperes]

It could be that other test suites have the potential to hit this deadlock, maybe they just haven't because they are not UI heavy.

More likely though, is a race condition in TestPlatformParameterModule.

oppia-android/testing/src/main/java/org/oppia/android/testing/platformparameter/TestPlatformParameterModule.kt

Lines 63 to 68 in f70f6f0

	return CoroutineScope(Dispatchers.Unconfined).async {
	// TODO(#5835): Remove this blocking hack to ensure tests are properly inited for params.
	val loadResult = prodController.loadParametersAsync()
	testCoroutineDispatchers.runCurrent()
	check(loadResult.isCompleted) { "Expected parameter loading to have finished." }
	}

Introduced testCoroutineDispatchers inloadParametersAsync, together with Dispatchers.Unconfined) maybe CI just wins the race consistently enough to mask it? (Doubting this though.).

[adhiamboperes]

@BenHenning's PR implements CompletableDeferred but still retains blocking the main thread in loadParamsAndRunTestDispatchersOnMainThread, so running tests on the fix-work-manager-and-app-init branch still can cause the failure.

https://github.com/oppia/oppia-android/blob/491f8e58a022ed70bfb933d7651e2898ad38d7ae/testing/src/main/java/org/oppia/android/testing/platformparameter/TestPlatformParameterModule.kt

[BenHenning]

Have you observed any other tests hitting the problem, or just this one? If it's just this one then I think it's probably the case that this was caused by the lack of the compose rule being defined (see above).

If other tests have hit it then there is definitely a race but I'm unsure where it is still (since I have forced parameters to load through the activity and it doesn't deadlock for me).

[adhiamboperes]

I have observed it in other tests too, when running them locally but not on CI. OnboardingProfileTypeActivity here is a pure Android Views screen.

adhiambo@MacBook-Pro oppia-android % bazel test 
app/src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest
INFO: Analyzed target //app:src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest (0 packages loaded, 4 targets configured).
INFO: Found 1 test target...
INFO: From KotlinKapt @//app:src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest_lib_kt { kt: 1, java: 1, srcjars: 0 } for darwin:
warning: /var/folders/3w/nrqgbmgx549_4jl18rndcxjc0000gn/T/pwd15401121608593472835/_kotlinc/app-src_sharedTest_java_org_oppia_android_app_onboarding_OnboardingProfileTypeActivityTest_lib_kt_jvm/temp/stubs/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest.java:161: warning: [org.oppia.android.app.application.ApplicationComponent.Builder.build()] org.oppia.android.app.onboarding.OnboardingProfileTypeActivityTest.TestApplicationComponent.Builder.build() returns org.oppia.android.app.application.ApplicationComponent, but org.oppia.android.app.onboarding.OnboardingProfileTypeActivityTest.TestApplicationComponent declares additional component method(s): inject(org.oppia.android.app.onboarding.OnboardingProfileTypeActivityTest). In order to provide type-safe access to these methods, override build() to return org.oppia.android.app.onboarding.OnboardingProfileTypeActivityTest.TestApplicationComponent
        public static abstract interface Builder extends org.oppia.android.app.application.ApplicationComponent.Builder {
                               ^
FAIL: //app:src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest (see /private/var/tmp/_bazel_adhiambo/02ee010362edf64cf4a14fbac48cd5cf/execroot/__main__/bazel-out/darwin-fastbuild/testlogs/app/src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest/test.log)
INFO: From Testing //app:src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest:
==================== Test output for //app:src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest:
JUnit4 Test Runner
.resources.arsc in APK '/private/var/tmp/_bazel_adhiambo/02ee010362edf64cf4a14fbac48cd5cf/sandbox/darwin-sandbox/795/execroot/__main__/bazel-out/darwin-fastbuild/bin/app/src/sharedTest/java/org/oppia/android/app/onboarding/OnboardingProfileTypeActivityTest.runfiles/__main__/../robolectric/bazel/../../org_robolectric_android_all_instrumented_11_robolectric_6757853_i2/android-all-instrumented-11-robolectric-6757853-i2.jar' is compressed.
E.
Time: 14.52
There was 1 failure:
1) testProfileTypeActivity_hasCorrectActivityLabel(org.oppia.android.app.onboarding.OnboardingProfileTypeActivityTest)
java.lang.IllegalStateException: Dispatcher failed to finish flush queue in 10000ms
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:134)
        (Coroutine boundary)
        at org.oppia.android.app.activity.InjectableAppCompatActivity$ensurePlatformParametersAreLoaded$1.invokeSuspend(InjectableAppCompatActivity.kt:65)
Caused by: java.lang.IllegalStateException: Dispatcher failed to finish flush queue in 10000ms
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:134)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.internal.ScopeCoroutine.afterResume(Scopes.kt:33)
        at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:102)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
        at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
        at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl.flushTaskQueueBlocking(TestCoroutineDispatcherRobolectricImpl.kt:128)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl.runCurrent(TestCoroutineDispatcherRobolectricImpl.kt:97)
        at org.oppia.android.testing.threading.TestCoroutineDispatcher.runCurrent$default(TestCoroutineDispatcher.kt:87)
        at org.oppia.android.testing.threading.TestCoroutineDispatchersRobolectricImpl.flushNextTasks(TestCoroutineDispatchersRobolectricImpl.kt:91)
        at org.oppia.android.testing.threading.TestCoroutineDispatchersRobolectricImpl.runCurrent(TestCoroutineDispatchersRobolectricImpl.kt:35)
        at org.oppia.android.testing.platformparameter.TestPlatformParameterModule$providePlatformParameterController$1$loadParametersAsync$1.invokeSuspend(TestPlatformParameterModule.kt:66)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.internal.DispatchedContinuationKt.resumeCancellableWith(DispatchedContinuation.kt:367)
        at kotlinx.coroutines.intrinsics.CancellableKt.startCoroutineCancellable(Cancellable.kt:30)
        at kotlinx.coroutines.intrinsics.CancellableKt.startCoroutineCancellable$default(Cancellable.kt:25)
        at kotlinx.coroutines.CoroutineStart.invoke(CoroutineStart.kt:110)
        at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:126)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.async(Builders.common.kt:91)
        at kotlinx.coroutines.BuildersKt.async(Unknown Source)
        at kotlinx.coroutines.BuildersKt__Builders_commonKt.async$default(Builders.common.kt:82)
        at kotlinx.coroutines.BuildersKt.async$default(Unknown Source)
        at org.oppia.android.testing.platformparameter.TestPlatformParameterModule$providePlatformParameterController$1.loadParametersAsync(TestPlatformParameterModule.kt:63)
        at org.oppia.android.app.activity.InjectableAppCompatActivity$ensurePlatformParametersAreLoaded$1.invokeSuspend(InjectableAppCompatActivity.kt:65)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
        at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
        at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
        at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
        at org.oppia.android.app.activity.InjectableAppCompatActivity.ensurePlatformParametersAreLoaded(InjectableAppCompatActivity.kt:65)
        at org.oppia.android.app.activity.InjectableAppCompatActivity.attachBaseContext(InjectableAppCompatActivity.kt:35)
        at android.app.Activity.$$robo$$android_app_Activity$attach(Activity.java:7894)
        at android.app.Activity.attach(Activity.java)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.robolectric.shadows._Activity_$$Reflector13.attach(Unknown Source)
        at org.robolectric.shadows._Activity_.callAttach(_Activity_.java:268)
        at org.robolectric.shadows.ShadowActivity.callAttach(ShadowActivity.java:169)
        at org.robolectric.android.controller.ActivityController.attach(ActivityController.java:95)
        at org.robolectric.android.controller.ActivityController.of(ActivityController.java:57)
        at org.robolectric.Robolectric.buildActivity(Robolectric.java:107)
        at org.robolectric.android.internal.RoboMonitoringInstrumentation.startActivitySyncInternal(RoboMonitoringInstrumentation.java:103)
        at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:33)
        at org.robolectric.android.internal.LocalActivityInvoker.startActivity(LocalActivityInvoker.java:38)
        at androidx.test.core.app.ActivityScenario.launchInternal(ActivityScenario.java:272)
        at androidx.test.core.app.ActivityScenario.launch(ActivityScenario.java:229)
        at org.oppia.android.app.onboarding.OnboardingProfileTypeActivityTest.launchOnboardingProfileTypeActivity(OnboardingProfileTypeActivityTest.kt:147)
        at org.oppia.android.app.onboarding.OnboardingProfileTypeActivityTest.testProfileTypeActivity_hasCorrectActivityLabel(OnboardingProfileTypeActivityTest.kt:134)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:566)
        at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
        at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
        at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
        at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
        at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
        at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
        at org.oppia.android.testing.OppiaTestRule$apply$1.evaluate(OppiaTestRule.kt:45)
        at org.oppia.android.testing.junit.InitializeDefaultLocaleRule$apply$1.evaluate(InitializeDefaultLocaleRule.kt:49)
        at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
        at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:591)
        at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:274)
        at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:88)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: kotlinx.coroutines.TimeoutCancellationException: Timed out waiting for 10000 ms
        (Coroutine boundary)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:131)
        at org.oppia.android.testing.threading.TestCoroutineDispatcherRobolectricImpl$flushTaskQueueBlocking$1.invokeSuspend(TestCoroutineDispatcherRobolectricImpl.kt:130)
Caused by: kotlinx.coroutines.TimeoutCancellationException: Timed out waiting for 10000 ms
        at kotlinx.coroutines.TimeoutKt.TimeoutCancellationException(Timeout.kt:184)
        at kotlinx.coroutines.TimeoutCoroutine.run(Timeout.kt:154)
        at kotlinx.coroutines.EventLoopImplBase$DelayedRunnableTask.run(EventLoop.common.kt:508)
        at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
        at kotlinx.coroutines.DefaultExecutor.run(DefaultExecutor.kt:108)
        at java.base/java.lang.Thread.run(Thread.java:829)

FAILURES!!!
Tests run: 2,  Failures: 1

[BenHenning]

So given that eliminating the choreographer is the ultimate cause still doesn't fix the issue for you @adhiamboperes then we have to think about what can cause the actual deadlock.

Per the specific initialization code, that deadlock can technically only trigger in two situations:

• There are unresolved main thread tasks at the time runCurrent() is called in TestPlatformParameterModule. This could be caused by your Mac's threading scheduling (or Mac-specific Robolectric implementation behaviors) causing certain activity behaviors to not finish running by the time runBlocking{} starts. Given this may have started after an update, that isn't completely unreasonable to be the case.
• There are main thread dispatches within runCurrent() that cannot be resolved due to the deadlock. This absolutely should not happen (and would trigger a deadlock on Linux, too) since we never post to the main thread except for LiveData, and even that I think is somewhat resilient to this failure case.

I was originally going to say this:

You can double check the above is happening by adding a print statement to TestCoroutineDispatchersRobolectricImpl.flushNextTasks(). My guess is printing out uiTaskCoordinator.isIdle() will yield that the main thread is not idle (I suggest also adding before/after print statements in TestPlatformParameterModule for the runCurrent() call so that you're inspecting the idle state at the correct time).

However, it's wrong. Even on Linux the main thread is not idle at the time runCurrent() runs which means some other condition is required for the deadlock to occur. I strongly suspect my premise is still correct here, but I don't yet know the conditions in which runCurrent() will contend with the blocking-await (and, in fact, I'm very surprised it doesn't contend by default).

[BenHenning]

@adhiamboperes this will be complex but I think you need to be inspecting what's currently scheduled in the shadow looper at the time we try to flush it. There must be some sort of task on the main thread looper that isn't actually resolved by Robolectric but is resolved later on (perhaps by Compose's own instrumenting, though that theory is suspect since your repro happens even without the compose rule in place). This is the bit in the actual looper we're using that's responsible for synchronously flushing the queue:

https://github.com/robolectric/robolectric/blob/dc7bcfd314f196984a6626be0f253e733c98718b/shadows/framework/src/main/java/org/robolectric/shadows/ShadowPausedLooper.java#L324-L340

For ease you can also use 2ce2f31 from #6116 to just provide our dispatchers implementation with the same functionality as Robolectric but a lot easier to inspect (you can't easily step through Robolectric code with a debugger due to how its instrumentation behaves).

Note that I've tried lots of things including real sleeps (i.e. Thread.sleep) and yields (to force context switching in the coroutine chain) and pushing tasks to the main thread. Each idea I have that could potentially cause an issue is properly handled by the dispatchers. I think this scenario can basically only happen if some sort of task is ready to execute now but is synchronously blocking on the main thread, and I cannot envision how or why that would come about. Without an idea of that piece, I can't create an artificial reproduction for additional analysis. I'm hoping your investigation into what specific main thread tasks are actually triggering this state will help me come up with something.