MockK导致StackOverflowException

编程问答 2022-06-06

问题描述

作为标题！我无法运行任何使用MockK的测试，因为它们最终在初始化期间引发了StackOverflowError。

作为示例，这是我的测试类之一：

Exception in thread "Test worker" java/lang/StackOverflowError
    at io/mockk/proxy/jvm/dispatcher/JvmMockKdispatcher.get (JvmMockKdispatcher.java:16)
    at java/lang/Object.hashCode (Object.java:119)
    at java/util/HashMap.hash (HashMap.java:339)
    at java/util/HashMap.get (HashMap.java:557)
    at sun/reflect/Reflection.filterMethods (Reflection.java:291)
    at java/lang/Class.getmethodHelper (Class.java:1265)
    at java/lang/Class.getmethod (Class.java:1191)
    at java/lang/Object.hashCode (Object.java:119)
    at java/util/HashMap.hash (HashMap.java:339)
    at java/util/HashMap.get (HashMap.java:557)
    at sun/reflect/Reflection.filterMethods (Reflection.java:291)
    at java/lang/Class.getmethodHelper (Class.java:1265)
    at java/lang/Class.getmethod (Class.java:1191)
    at java/lang/Object.hashCode (Object.java:119)
    at java/util/HashMap.hash (HashMap.java:339)
    at java/util/HashMap.get (HashMap.java:557)
    at sun/reflect/Reflection.filterMethods (Reflection.java:291)
    at java/lang/Class.getmethodHelper (Class.java:1265)
    at java/lang/Class.getmethod (Class.java:1191)
    at java/lang/Object.hashCode (Object.java:119)
    at java/util/HashMap.hash (HashMap.java:339)
    at java/util/HashMap.get (HashMap.java:557)
    ...

这是产生的堆栈跟踪，一旦模式变得明显，就将其切断：

org.gradle.internal.remote.internal.MessageIOException: Could not read message from '/127.0.0.1:52775'.
    at org.gradle.internal.remote.internal.inet.socketConnection.receive(SocketConnection.java:94)
    at org.gradle.internal.remote.internal.hub.MessageHub$ConnectionReceive.run(MessageHub.java:270)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
    at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
    at java.lang.Thread.run(Thread.java:821)

然后会引发MessageIOException：

dependencies {
    // Other dependencies go here...
    testImplementation("org.springframework.boot:spring-boot-starter-test") {
        exclude(group = "org.junit.vintage",module = "junit-vintage-engine")
    }
    testImplementation("org.springframework.security:spring-security-test")
    testImplementation("org.jetbrains.kotlin:kotlin-test-junit5:1.4.10")
    testImplementation("io.mockk:mockk:1.10.2")
    testImplementation("com.ninja-squad:springmockk:2.0.3")
}

据我所知，我已经正确设置了MockK并根据其指南进行使用：

cimg/openjdk:8.0

是什么导致该异常，我该如何解决？让我知道是否需要更多上下文。

编辑：CircleCI使用图像DBSequence

运行测试时，不会发生相同的异常

编辑2：添加了DBSequenceRepo和@Document(collection = "dbSequences") data class DBSequence( @Id var name: String,var nextVal: Long ) { override fun equals(other: Any?): Boolean { if (this === other) return true if (javaClass != other?.javaClass) return false other as DBSequence if (name != other.name) return false return true } override fun hashCode(): Int { return name.hashCode() } } interface DBSequencesRepo : MongoRepository<DBSequence,String> 的定义

{{1}}

解决方法

对我来说，我收到以下错误：

at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)`

事实证明，mockK 库无法在特定版本的 Java 11（特别是 11.0.10.j9-adpt）上运行

如果您使用的是 sdkman，请使用 11.0.10.hs-adpt 版本

| | 11.0.10.j9 | adpt | | 11.0.10.j9-adpt
| >>> | 11.0.10.hs | adpt | installed | 11.0.10.hs-adpt

,

存在与该问题有关的open issue in mockk。该错误在JVM变体的一部分上重现。我想您本地有这样的JVM安装之一。解决方法是，您可以尝试在本地安装其他JVM发行版。根据上面的链接，“ AdoptOpenJDK：1.8.0_222热点”似乎还可以。

,

我们今天在本地计算机上遇到了类似的问题。我们正在尝试将MockK与vert.x和Kotlin一起用于后端服务。

我们的开发机器是具有OpenJDK 11.0.9的MacO，并且出于某些奇怪的原因，有时可以正常运行，有时可以保持活动状态，直到引发测试超时并显示以下消息：

per (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/reflect/Reflection.filterMethods (java.base@9/Reflection.java:276)
    at java/lang/Class.getMethodHelper (java.base@9/Class.java:1457)
    at java/lang/Class.getMethod (java.base@9/Class.java:1361)
    at java/lang/Object.hashCode (java.base@9/Object.java:122)
    at java/util/HashMap.hash (java.base@9/HashMap.java:339)
    at java/util/HashMap.get (java.base@9/HashMap.java:552)
    at jdk/internal/

当我们将JDK设置为Idea项目的settins和Gradle中的值为8. *时，有时会通过一个测试，而一个测试却失败，并显示与上述相同的错误。

我不是MockK库的专家，但我非常有兴趣将其与mockito-kotlin进行比较。 与最新版本的JDK一起使用时，IMO库在反射方面存在一些问题。

kotlinkotlinmockkspring-boot