线程编织器调用目标异常

Question

我正在尝试让 Thread Weaver 工作，但无论我尝试什么，我总是遇到下面的异常。

我创建了一个干净的项目，其中仅包含 EasyMock、JUnit 和 Thread Weaver，代码是 Thread Weaver 文档中的示例（我使用 EasyMock 4.2，并使用 JDK 15 和 JDK 9 以及 JUnit 4 和 JUnit 进行了尝试5).

有人知道吗...？

测试类：

import java.util.ArrayList;

public class MyList extends ArrayList {
    synchronized public boolean  putIfAbsent(Object o) {
        boolean absent = !super.contains(o);
        if (absent) {
            super.add(o);
        }
        return absent;
    }
}

测试：

import com.google.testing.threadtester.*;
import org.junit.Test;

import static org.junit.Assert.assertEquals;

public class MyListTest  {

    private MyList list;

    @Test
    public void testThreading() {
        AnnotatedTestRunner runner = new AnnotatedTestRunner();
        // Run all Weaver tests in this class, using MyList as the Class Under Test.
        runner.runTests(this.getClass(), MyList.class);
    }

    @ThreadedBefore
    public void before() {
        list = new MyList();
    }

    @ThreadedMain
    public void mainThread() {
        list.putIfAbsent("A");
    }

    @ThreadedSecondary
    public void secondThread() {
        list.putIfAbsent("A");
    }

    @ThreadedAfter
    public void after() {
        assertEquals(1, list.size());
    }
}

例外：

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

    at com.google.testing.threadtester.MethodCaller.invoke(MethodCaller.java:71)
    at com.google.testing.threadtester.BaseThreadedTestRunner.runTests(BaseThreadedTestRunner.java:210)
    at com.google.testing.threadtester.BaseThreadedTestRunner.runTests(BaseThreadedTestRunner.java:174)
    at MyListTest.testThreading(MyListTest.java:14)
    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:564)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:221)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: java.lang.reflect.InvocationTargetException
    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:564)
    at com.google.testing.threadtester.MethodCaller.invoke(MethodCaller.java:68)
    ... 24 more
Caused by: java.lang.RuntimeException: Cannot instrument class
    at com.google.testing.threadtester.TestInstrumenter.instrument(TestInstrumenter.java:446)
    at com.google.testing.instrumentation.InstrumentedClassLoader.findClass(InstrumentedClassLoader.java:138)
    at com.google.testing.instrumentation.InstrumentedClassLoader.loadClass(InstrumentedClassLoader.java:114)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
    at java.base/java.lang.Class.forName0(Native Method)
    at java.base/java.lang.Class.forName(Class.java:292)
    at com.google.testing.threadtester.AnnotatedTestWrapper.runTests(AnnotatedTestWrapper.java:272)
    ... 29 more
Caused by: javassist.CannotCompileException: [source error] no such class: com.google.testing.threadtester.CallLogger
    at javassist.CtField.make(CtField.java:167)
    at com.google.testing.threadtester.TestInstrumenter.addDeclaration(TestInstrumenter.java:501)
    at com.google.testing.threadtester.TestInstrumenter.processClass(TestInstrumenter.java:470)
    at com.google.testing.threadtester.TestInstrumenter.instrument(TestInstrumenter.java:444)
    ... 35 more
Caused by: compile error: no such class: com.google.testing.threadtester.CallLogger
    at javassist.compiler.MemberResolver.searchImports(MemberResolver.java:468)
    at javassist.compiler.MemberResolver.lookupClass(MemberResolver.java:412)
    at javassist.compiler.MemberResolver.lookupClassByJvmName(MemberResolver.java:319)
    at javassist.compiler.MemberResolver.lookupClass(MemberResolver.java:336)
    at javassist.compiler.MemberResolver.lookupClass(MemberResolver.java:323)
    at javassist.compiler.Javac.compileField(Javac.java:133)
    at javassist.compiler.Javac.compile(Javac.java:93)
    at javassist.CtField.make(CtField.java:162)
    ... 38 more

编辑：

澄清一下 - 库已经存在并且项目可以编译。该错误仅在我实际运行测试时发生

Answer 1

我在使用 jdk17 时遇到了与您相同的问题，然后我注意到我没有添加该库所需的所有依赖项。您似乎错过了以下内容：

• cglib
• javassist
• 客观存在
• asm

我也犯了一个错误，你没有，但只是想添加它以用于文档目的： 我添加了错误的线程编织器库。我添加了 com.googlecode.thread-weaver 而不是 Maven 存储库中的 org.mapdb。

在我添加缺少的库并用正确的库替换错误的库后，它起作用了，但测试本身失败了。

此外，我在 github 上找到了一个 google repo，其中解释了 thread-weaver 的代码和所需的依赖项： https://github.com/google/thread-weaver