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Getting UnsupportedOperationException running JUnit test with Eclipse 2019-06 and 2019-03. This is a known bug in ASM, and has supposedly been fixed. I am including ASM 7.1 as a dependency for the maven-surefire-plugin. I have tried adding ASM 7.1 explicitly as a test dependency, but that did not work. What appears to be happening is Eclipse is internally using an earlier version of ASM that doesn't have the fix for NestHost/NestMembers, for the JUnit 5 test runner. This Maven build works on the command line, but not in Eclipse. Maven 3.6.1 Java 11.0.1 JUnit 5 JMockit 1.46 ASM 7.1 java.lang.UnsupportedOperationException: class redefinition failed: attempted to change the class NestHost or NestMembers attribute at java.instrument/sun.instrument.InstrumentationImpl.redefineClasses0(Native Method) at java.instrument/sun.instrument.InstrumentationImpl.redefineClasses(InstrumentationImpl.java:193) at mockit.internal.startup.Startup.redefineMethods(Startup.java:159) at mockit.internal.state.MockFixture.redefineClasses(MockFixture.java:159) at mockit.internal.expectations.mocking.BaseTypeRedefinition.applyClassRedefinition(BaseTypeRedefinition.java:221) at mockit.internal.expectations.mocking.BaseTypeRedefinition.redefineClass(BaseTypeRedefinition.java:215) at mockit.internal.expectations.mocking.BaseTypeRedefinition.redefineClassAndItsSuperClasses(BaseTypeRedefinition.java:188) at mockit.internal.expectations.mocking.BaseTypeRedefinition.redefineClassAndItsSuperClasses(BaseTypeRedefinition.java:204) at mockit.internal.expectations.mocking.BaseTypeRedefinition.redefineMethodsAndConstructorsInTargetType(BaseTypeRedefinition.java:175) at mockit.internal.expectations.mocking.BaseTypeRedefinition.redefineTargetClassAndCreateInstanceFactory(BaseTypeRedefinition.java:251) at mockit.internal.expectations.mocking.BaseTypeRedefinition.redefineType(BaseTypeRedefinition.java:67) at mockit.internal.expectations.mocking.TypeRedefinition.redefineType(TypeRedefinition.java:28) at mockit.internal.expectations.mocking.FieldTypeRedefinitions.redefineFieldType(FieldTypeRedefinitions.java:78) at mockit.internal.expectations.mocking.FieldTypeRedefinitions.redefineFieldType(FieldTypeRedefinitions.java:65) at mockit.internal.expectations.mocking.FieldTypeRedefinitions.redefineFieldTypes(FieldTypeRedefinitions.java:53) at mockit.internal.expectations.mocking.FieldTypeRedefinitions.<init>(FieldTypeRedefinitions.java:33) at mockit.integration.internal.TestRunnerDecorator.handleMockFieldsForWholeTestClass(TestRunnerDecorator.java:141) at mockit.integration.junit5.JMockitExtension.postProcessTestInstance(JMockitExtension.java:52) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$invokeTestInstancePostProcessors$3(ClassTestDescriptor.java:215) at org.junit.jupiter.engine.descriptor.JupiterTestDescriptor.executeAndMaskThrowable(JupiterTestDescriptor.java:141) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$invokeTestInstancePostProcessors$4(ClassTestDescriptor.java:215) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1654) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.invokeTestInstancePostProcessors(ClassTestDescriptor.java:214) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.instantiateAndPostProcessTestInstance(ClassTestDescriptor.java:196) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$testInstanceProvider$0(ClassTestDescriptor.java:185) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$testInstanceProvider$1(ClassTestDescriptor.java:189) at java.base/java.util.Optional.orElseGet(Optional.java:369) at org.junit.jupiter.engine.descriptor.ClassTestDescriptor.lambda$testInstanceProvider$2(ClassTestDescriptor.java:188) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:81) at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:58) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.prepare(HierarchicalTestExecutor.java:89) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:74) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$2(HierarchicalTestExecutor.java:121) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$3(HierarchicalTestExecutor.java:121) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.executeRecursively(HierarchicalTestExecutor.java:108) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:79) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$2(HierarchicalTestExecutor.java:121) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133) at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.lambda$executeRecursively$3(HierarchicalTestExecutor.java:121) at org.junit.platform.engine.support.hierarchical.SingleTestExecutor.executeSafely(SingleTestExecutor.java:66) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.executeRecursively(HierarchicalTestExecutor.java:108) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor$NodeExecutor.execute(HierarchicalTestExecutor.java:79) at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:55) at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:43) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:229) at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:197) at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:211) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:191) at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:137) at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:89) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
(In reply to JD Smith from comment #0) > > What appears to be happening is Eclipse is internally using an earlier > version of ASM that doesn't have the fix for NestHost/NestMembers, for the > JUnit 5 test runner. > JDT Core does not use ASM. moving this to launcher for further investigation.
Please disable Java - Debug - Advanced source lookup and check if this helps. Are you sure Ecliose 4.12 is affected, since it uses ASM 7.1? Please also check error log.
Adding @Igor, if he has any inputs.
After further trial and error to try to get this to work, I fell back to using the Maven eclipse plugin to generate the Eclipse project, which contains the explicit classpath from the Maven project dependencies. This plugin adds all of the dependencies to the .classpath file. When I did this, the Eclipse JUnit test started working. This issue is really a problem that I have been experiencing for many releases of Eclipse: The Eclipse m2e plugin does not correctly resolve the dependencies. Dependencies can come from the project's Maven pom.xml, and from projects that are part of the Eclipse workspace. Recently, it was announced that the Maven eclipse plugin is no longer supported, because the Eclipse IDE is supposed to resolve the dependencies. I have never seen the Eclipse IDE resolve dependencies correctly, at least not in many, many years. So I have pretty much always relied on the eclipse plugin to explicitly create the dependencies in the .classpath file. Surely a Bug already exists for this problem... How can I help with this issue? Do you need anymore information from me? It should be a very well known problem with the Eclipse IDE. That needs to be fixed once and for all. Thank you, JD Smith
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.
