Adding the Paparazzi plugin to a module that tests Molecule presenters leads to UnsatisfiedLinkError

[Egorand]

Not really sure whether it's a Molecule or a Paparazzi issue, or something else entirely, so starting a discussion first before filing an issue. Chose to start a discussion on this project cause the issue I'm seeing manifests in the Molecule code.

I set up a test project that includes a simple @Composable presenter and unit tests for it, the tests launch the presenter using CoroutineScope.launchMolecule and use Turbine to test it. You can check that the tests pass by running ./gradlew lib:tDUT.

But if I simply add the Paparazzi plugin to the same module, tests start failing with the following error:

Caused by: java.lang.UnsatisfiedLinkError: 'long android.os.Trace.nativeGetEnabledTags()'

Full stack trace

Exception in thread "Test worker @coroutine#3" kotlinx.coroutines.CompletionHandlerException: Exception in completion handler InvokeOnCompletion@6d1ef78d[job@1a6c1270] for "coroutine#1":BlockingCoroutine{Cancelled}@1a6c1270
	at kotlinx.coroutines.JobSupport.notifyCompletion(JobSupport.kt:1525)
	at kotlinx.coroutines.JobSupport.completeStateFinalization(JobSupport.kt:323)
	at kotlinx.coroutines.JobSupport.finalizeFinishingState(JobSupport.kt:240)
	at kotlinx.coroutines.JobSupport.continueCompleting(JobSupport.kt:935)
	at kotlinx.coroutines.JobSupport.access$continueCompleting(JobSupport.kt:27)
	at kotlinx.coroutines.JobSupport$ChildCompletion.invoke(JobSupport.kt:1155)
	at kotlinx.coroutines.JobSupport.notifyCompletion(JobSupport.kt:1520)
	at kotlinx.coroutines.JobSupport.completeStateFinalization(JobSupport.kt:323)
	at kotlinx.coroutines.JobSupport.finalizeFinishingState(JobSupport.kt:240)
	at kotlinx.coroutines.JobSupport.tryMakeCompletingSlowPath(JobSupport.kt:906)
	at kotlinx.coroutines.JobSupport.tryMakeCompleting(JobSupport.kt:863)
	at kotlinx.coroutines.JobSupport.makeCompletingOnce$kotlinx_coroutines_core(JobSupport.kt:828)
	at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:100)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
	at kotlinx.coroutines.UndispatchedCoroutine.afterResume(CoroutineContext.kt:233)
	at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:102)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
	at kotlinx.coroutines.internal.ScopeCoroutine.afterResume(Scopes.kt:33)
	at kotlinx.coroutines.AbstractCoroutine.resumeWith(AbstractCoroutine.kt:102)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
	at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
	at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
	at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
	at com.example.moleculeunsatisfiedlinkerror.MoleculePresenterTest.test(MoleculePresenterTest.kt:16)
	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.ExpectException.evaluate(ExpectException.java:19)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
	at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:176)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
	at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)
	Suppressed: kotlinx.coroutines.DiagnosticCoroutineContextException: [CoroutineId(1), "coroutine#1":BlockingCoroutine{Cancelled}@1a6c1270, BlockingEventLoop@6bbe2511]
Caused by: java.lang.UnsatisfiedLinkError: 'long android.os.Trace.nativeGetEnabledTags()'
	at android.os.Trace.nativeGetEnabledTags(Native Method)
	at android.os.Trace.isTagEnabled(Trace.java:148)
	at android.os.Trace.beginSection(Trace.java:285)
	at androidx.compose.runtime.Trace.beginSection(ActualAndroid.android.kt:30)
	at androidx.compose.runtime.ComposerImpl.dispose$runtime_release(Composer.kt:3480)
	at androidx.compose.runtime.CompositionImpl.dispose(Composition.kt:500)
	at app.cash.molecule.MoleculeKt$launchMolecule$2$2.invoke(molecule.kt:159)
	at app.cash.molecule.MoleculeKt$launchMolecule$2$2.invoke(molecule.kt:158)
	at kotlinx.coroutines.InvokeOnCompletion.invoke(JobSupport.kt:1392)
	at kotlinx.coroutines.JobSupport.notifyCompletion(JobSupport.kt:1520)
	... 71 more

Unexpected exception, expected<java.util.concurrent.CancellationException> but was<java.lang.UnsatisfiedLinkError>
java.lang.Exception: Unexpected exception, expected<java.util.concurrent.CancellationException> but was<java.lang.UnsatisfiedLinkError>
	at org.junit.internal.runners.statements.ExpectException.evaluate(ExpectException.java:30)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
	at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:176)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
	at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
	at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133)
	at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)
Caused by: java.lang.UnsatisfiedLinkError: 'long android.os.Trace.nativeGetEnabledTags()'
	at android.os.Trace.nativeGetEnabledTags(Native Method)
	at android.os.Trace.isTagEnabled(Trace.java:148)
	at android.os.Trace.beginSection(Trace.java:285)
	at androidx.compose.runtime.Trace.beginSection(ActualAndroid.android.kt:30)
	at androidx.compose.runtime.ComposerImpl.doCompose(Composer.kt:3522)
	at androidx.compose.runtime.ComposerImpl.composeContent$runtime_release(Composer.kt:2522)
	at androidx.compose.runtime.CompositionImpl.composeContent(Composition.kt:478)
	at androidx.compose.runtime.Recomposer.composeInitial$runtime_release(Recomposer.kt:748)
	at androidx.compose.runtime.CompositionImpl.setContent(Composition.kt:433)
	at app.cash.molecule.MoleculeKt.launchMolecule(molecule.kt:163)
	at app.cash.molecule.MoleculeKt.launchMolecule(molecule.kt:108)
	at com.example.moleculeunsatisfiedlinkerror.MoleculePresenterTest.makePresenter(MoleculePresenterTest.kt:24)
	at com.example.moleculeunsatisfiedlinkerror.MoleculePresenterTest.access$makePresenter(MoleculePresenterTest.kt:14)
	at com.example.moleculeunsatisfiedlinkerror.MoleculePresenterTest$test$1.invokeSuspend(MoleculePresenterTest.kt:17)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
	at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
	at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
	at com.example.moleculeunsatisfiedlinkerror.MoleculePresenterTest.test(MoleculePresenterTest.kt:16)
	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.ExpectException.evaluate(ExpectException.java:19)
	... 35 more

Not really sure what's going on. Any ideas?

[JakeWharton]

Paparazzi is replacing the stubbed APIs with real ones via layoutlib and it doesn't support this particular API that the Compose runtime uses. Seems like a Paparazzi feature request is in order.

[Egorand]

Interesting, makes sense! Will file a Paparazzi issue.

[burntcookie90]

@Egorand I just ran into this as well but couldn't find the issue filed on paparazzi. Should I file one just linked to this?

[Egorand]

@burntcookie90 looks like I forgot to file it after all.. Sure, please file if you're still seeing this!