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StackOverflowError using Kotlin 1.7.20

See original GitHub issue

Context

MockK version: 1.12.8
ByteBuddy version: 1.12.13
OS: MacOS
Kotlin version: 1.7.20
JDK version: 18.0.2
JUnit version: 5.9.0
Type of test: unit test (no containers)

Failure Logs

Cannot invoke "io.vertx.ext.mongo.MongoClient.replaceDocumentsWithOptions(String, io.vertx.core.json.JsonObject, io.vertx.core.json.JsonObject, io.vertx.ext.mongo.UpdateOptions)" because the return value of "kn.tqt.db.store.base.AbstractRepository.getDbClient()" is null
java.lang.NullPointerException: Cannot invoke "io.vertx.ext.mongo.MongoClient.replaceDocumentsWithOptions(String, io.vertx.core.json.JsonObject, io.vertx.core.json.JsonObject, io.vertx.ext.mongo.UpdateOptions)" because the return value of "kn.tqt.db.store.base.AbstractRepository.getDbClient()" is null
	at kn.tqt.db.store.base.AbstractRepository.upsert$suspendImpl(AbstractRepository.kt:47)
	at kn.tqt.db.store.base.AbstractRepository.upsert(AbstractRepository.kt)

Stack trace

java.lang.StackOverflowError: null
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.of(TypeDescription.java:2008)
	at net.bytebuddy.description.type.TypeList$Generic$ForDetachedTypes.attachVariables(TypeList.java:561)
	at net.bytebuddy.description.method.MethodDescription$Latent.getTypeVariables(MethodDescription.java:1455)
	at net.bytebuddy.description.TypeVariableSource$AbstractBase.findVariable(TypeVariableSource.java:157)
	at net.bytebuddy.description.TypeVariableSource$AbstractBase.findExpectedVariable(TypeVariableSource.java:172)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onTypeVariable(TypeDescription.java:2035)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onTypeVariable(TypeDescription.java:1946)
	at net.bytebuddy.description.type.TypeDescription$Generic$OfTypeVariable$Symbolic.accept(TypeDescription.java:5856)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor.onParameterizedType(TypeDescription.java:1881)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onParameterizedType(TypeDescription.java:1946)
	at net.bytebuddy.description.type.TypeDescription$Generic$OfParameterizedType.accept(TypeDescription.java:5059)
	at net.bytebuddy.description.method.ParameterDescription$Latent.getType(ParameterDescription.java:805)
	at net.bytebuddy.description.method.ParameterList$AbstractBase.asTypeList(ParameterList.java:107)
	at net.bytebuddy.description.method.MethodDescription$AbstractBase.toString(MethodDescription.java:1006)
	at java.base/java.lang.String.valueOf(String.java:4213)
	at java.base/java.lang.StringBuilder.append(StringBuilder.java:173)
	at net.bytebuddy.description.TypeVariableSource$AbstractBase.findExpectedVariable(TypeVariableSource.java:174)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onTypeVariable(TypeDescription.java:2035)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onTypeVariable(TypeDescription.java:1946)
	at net.bytebuddy.description.type.TypeDescription$Generic$OfTypeVariable$Symbolic.accept(TypeDescription.java:5856)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor.onParameterizedType(TypeDescription.java:1881)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onParameterizedType(TypeDescription.java:1946)
	at net.bytebuddy.description.type.TypeDescription$Generic$OfParameterizedType.accept(TypeDescription.java:5059)
	at net.bytebuddy.description.method.ParameterDescription$Latent.getType(ParameterDescription.java:805)
	at net.bytebuddy.description.method.ParameterList$AbstractBase.asTypeList(ParameterList.java:107)
	at net.bytebuddy.description.method.MethodDescription$AbstractBase.toString(MethodDescription.java:1006)
	at java.base/java.lang.String.valueOf(String.java:4213)
	at java.base/java.lang.StringBuilder.append(StringBuilder.java:173)
...

Minimal reproducible code (the gist of this issue)

mockk<TotalBidSummaryRepository>().apply {
      coEvery { upsert(any()) } coAnswers {
        val summary = firstArg<TotalBidSummary>()
        state[summary.rfqNum] = summary
        true
      }
      coEvery { findNullable(any()) } coAnswers {
        state[firstArg()]?.deepCopy()
      }
      coEvery { find(any()) } coAnswers {
        state[firstArg()]!!.deepCopy()
      }
    }

class TotalBidSummaryRepository(dbClient: MongoClient) :
  AbstractRepository<TotalBidSummary>(dbClient, "TotalBidSummary", TotalBidSummary::class)

abstract class AbstractRepository<T : Any>(
  dbClient: MongoClient,
  collectionName: String,
  clazz: KClass<T>
) : AbstractReadOnlyRepository<T>(dbClient, collectionName, clazz) {

P.S. maybe byte-buddy issue?

Issue Analytics

State:
Created a year ago
Reactions:7
Comments:12 (6 by maintainers)

Top GitHub Comments

2reactions

stuebingerbcommented, Oct 5, 2022

Same here with a similar setup. Works with Kotlin 1.7.10 but fails with 1.7.20, if this helps.

1reaction

ferinagycommented, Oct 13, 2022

I ran into similar issue. My minimal repro case is:

import io.mockk.every
import io.mockk.mockk
import org.junit.Test

class MockkTest {

    @Test
    fun test() {
        mockk<TestClass<Unit>> {
            every { state } returns 0
        }
    }
}

abstract class TestClass<T> {
    val state: Int = TODO()
    open suspend fun doCreate(): Int = TODO()
}

It also works with kotlin 1.7.10, but fails with 1.7.20. The error we see when running the test as a part of our Android project is:

Missing mocked calls inside every { ... } block: make sure the object inside the block is a mock
io.mockk.MockKException: Missing mocked calls inside every { ... } block: make sure the object inside the block is a mock
	at app//io.mockk.impl.recording.states.StubbingState.checkMissingCalls(StubbingState.kt:14)
	at app//io.mockk.impl.recording.states.StubbingState.recordingDone(StubbingState.kt:8)
	at app//io.mockk.impl.recording.CommonCallRecorder.done(CommonCallRecorder.kt:47)
	at app//io.mockk.impl.eval.RecordedBlockEvaluator.record(RecordedBlockEvaluator.kt:64)
	at app//io.mockk.impl.eval.EveryBlockEvaluator.every(EveryBlockEvaluator.kt:30)
	at app//io.mockk.MockKDsl.internalEvery(API.kt:93)
	at app//io.mockk.MockKKt.every(MockK.kt:98)
	at app//at.beeone.george.MockkTest.test(MockkTest.kt:13)
	at java.base@11.0.16.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base@11.0.16.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base@11.0.16.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base@11.0.16.1/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.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	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.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at app//org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
	at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
	at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
	at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
	at java.base@11.0.16.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base@11.0.16.1/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base@11.0.16.1/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base@11.0.16.1/java.lang.reflect.Method.invoke(Method.java:566)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at com.sun.proxy.$Proxy5.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 app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
	at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)

After extracting the repro case to pure jvm console app, I also see the stackoverflow error before:

WARNING: Failed to transform class TestClass
java.lang.StackOverflowError
	at net.bytebuddy.description.TypeVariableSource$AbstractBase.findExpectedVariable(TypeVariableSource.java:171)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onTypeVariable(TypeDescription.java:2033)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onTypeVariable(TypeDescription.java:1944)
	at net.bytebuddy.description.type.TypeDescription$Generic$OfTypeVariable$Symbolic.accept(TypeDescription.java:5854)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor.onParameterizedType(TypeDescription.java:1879)
	at net.bytebuddy.description.type.TypeDescription$Generic$Visitor$Substitutor$ForAttachment.onParameterizedType(TypeDescription.java:1944)
	at net.bytebuddy.description.type.TypeDescription$Generic$OfParameterizedType.accept(TypeDescription.java:5057)
	at net.bytebuddy.description.method.ParameterDescription$Latent.getType(ParameterDescription.java:805)
	at net.bytebuddy.description.method.ParameterList$AbstractBase.asTypeList(ParameterList.java:107)
	at net.bytebuddy.description.method.MethodDescription$AbstractBase.toString(MethodDescription.java:1006)
	at java.base/java.lang.String.valueOf(String.java:2951)
	at java.base/java.lang.StringBuilder.append(StringBuilder.java:173)
	at net.bytebuddy.description.TypeVariableSource$AbstractBase.findExpectedVariable(TypeVariableSource.java:173)
...

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