Unable to execute tests with AdoptOpenJDK 8

[dagutten]

Hi,

I am facing exactly the same issue reported in: #108

When executing mvn clean verify on: https://github.com/ExpediaGroup/jenkins-spock/tree/master/examples/shared-library

---

Error:

`Feb 16, 2022 2:15:21 PM jenkins.model.Jenkins
SEVERE: Failed to load Jenkins.class
java.lang.ExceptionInInitializerError
at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:811)
at com.thoughtworks.xstream.XStream.(XStream.java:574)
at com.thoughtworks.xstream.XStream.(XStream.java:496)
at com.thoughtworks.xstream.XStream.(XStream.java:465)
at com.thoughtworks.xstream.XStream.(XStream.java:411)
at com.thoughtworks.xstream.XStream.(XStream.java:350)
at hudson.util.XStream2.(XStream2.java:100)
at jenkins.model.Jenkins.(Jenkins.java:5091)
at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized0(Native Method)
at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized(Unsafe.java:1155)
at java.base/jdk.internal.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:42)
at java.base/jdk.internal.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:185)
at java.base/java.lang.reflect.Field.acquireFieldAccessor(Field.java:1132)
at java.base/java.lang.reflect.Field.getFieldAccessor(Field.java:1113)
at java.base/java.lang.reflect.Field.set(Field.java:799)
at org.codehaus.groovy.reflection.CachedField.setProperty(CachedField.java:74)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2689)
at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3770)
at org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:199)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:484)
at com.homeaway.devtools.jenkins.testing.JenkinsPipelineSpecification.setupSpec(JenkinsPipelineSpecification.groovy:1101)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.spockframework.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:188)
at org.spockframework.runtime.model.MethodInfo.invoke(MethodInfo.java:84)
at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:481)
at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:464)
at org.spockframework.runtime.BaseSpecRunner.doRunSetupSpec(BaseSpecRunner.java:180)
at org.spockframework.runtime.BaseSpecRunner$3.invoke(BaseSpecRunner.java:164)
at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:481)
at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:464)
at org.spockframework.runtime.BaseSpecRunner.runSetupSpec(BaseSpecRunner.java:157)
at org.spockframework.runtime.BaseSpecRunner.doRunSetupSpec(BaseSpecRunner.java:177)
at org.spockframework.runtime.BaseSpecRunner$3.invoke(BaseSpecRunner.java:164)
at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:481)
at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:464)
at org.spockframework.runtime.BaseSpecRunner.runSetupSpec(BaseSpecRunner.java:157)
at org.spockframework.runtime.BaseSpecRunner.runSetupSpec(BaseSpecRunner.java:152)
at org.spockframework.runtime.BaseSpecRunner.doRunSpec(BaseSpecRunner.java:97)
at org.spockframework.runtime.BaseSpecRunner$1.invoke(BaseSpecRunner.java:84)
at org.spockframework.runtime.BaseSpecRunner.invokeRaw(BaseSpecRunner.java:481)
at org.spockframework.runtime.BaseSpecRunner.invoke(BaseSpecRunner.java:464)
at org.spockframework.runtime.BaseSpecRunner.runSpec(BaseSpecRunner.java:76)
at org.spockframework.runtime.BaseSpecRunner.run(BaseSpecRunner.java:67)
at org.spockframework.runtime.Sputnik.run(Sputnik.java:63)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:383)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:344)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:125)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:417)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private final java.util.Comparator java.util.TreeMap.comparator accessible: module java.base does not "opens java.util" to unnamed module @32da56f4
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
at com.thoughtworks.xstream.core.util.Fields.locate(Fields.java:39)
at com.thoughtworks.xstream.converters.collections.TreeMapConverter.(TreeMapConverter.java:50)
... 55 more

[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 1.08 s <<< FAILURE! - in DefaultPipelineSpec
[ERROR] DefaultPipelineSpec Time elapsed: 1.079 s <<< ERROR!
java.lang.ExceptionInInitializerError
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private final java.util.Comparator java.util.TreeMap.comparator accessible: module java.base does not "opens java.util" to unnamed module @32da56f4

[INFO] Running DeployerSpec
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.001 s <<< FAILURE! - in DeployerSpec
[ERROR] DeployerSpec Time elapsed: 0.001 s <<< ERROR!
java.lang.NoClassDefFoundError: Could not initialize class jenkins.model.Jenkins`

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My environment is using java 8 Adopt Open JDK:

shared-library % java -version openjdk version "1.8.0_282" OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_282-b08) OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.282-b08, mixed mode)

Is Jenkins spock compatible with AdoptOpenJDK 1.8?