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Problem with Java 17 #96
Description
Hi,
in this test class: https://github.com/gwtboot/gwt-boot-samples/blob/master/gwt-boot-sample-collection/src/test/java/com/github/gwtboot/sample/collection/client/ui/HelloWorldViewTest.java
... I'm using gwtmockito and with Java 11 everything works fine.
With Java 17 I get following error:
-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running com.github.gwtboot.sample.collection.client.ui.HelloWorldViewTest
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.174 sec <<< FAILURE!
com.github.gwtboot.sample.collection.client.ui.HelloWorldViewTest Time elapsed: 0.174 sec <<< ERROR!
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.google.gwtmockito.GwtMockitoTestRunner.withBefores(GwtMockitoTestRunner.java:398)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:276)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at com.google.gwtmockito.GwtMockitoTestRunner.run(GwtMockitoTestRunner.java:376)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
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:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at com.google.gwtmockito.GwtMockitoTestRunner.withBefores(GwtMockitoTestRunner.java:396)
... 22 more
Caused by: java.lang.ExceptionInInitializerError
at org.mockito.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:167)
at org.mockito.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at org.mockito.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:217)
at org.mockito.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:117)
at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:109)
at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:105)
at org.mockito.cglib.proxy.Enhancer.<clinit>(Enhancer.java:70)
at org.mockito.internal.creation.cglib.ClassImposterizer.createProxyClass(ClassImposterizer.java:95)
at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:57)
at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:49)
at org.mockito.internal.creation.cglib.CglibMockMaker.createMock(CglibMockMaker.java:24)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33)
at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59)
at org.mockito.Mockito.mock(Mockito.java:1285)
at org.mockito.Mockito.mock(Mockito.java:1163)
at com.google.gwtmockito.GwtMockito.registerGwtMocks(GwtMockito.java:203)
at com.google.gwtmockito.GwtMockito.initMocks(GwtMockito.java:133)
... 27 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @a803f94
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.Method.checkCanSetAccessible(Method.java:199)
at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
at org.mockito.cglib.core.ReflectUtils$2.run(ReflectUtils.java:57)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
at org.mockito.cglib.core.ReflectUtils.<clinit>(ReflectUtils.java:47)
... 45 more
Results :
Tests in error:
com.github.gwtboot.sample.collection.client.ui.HelloWorldViewTest: java.lang.reflect.InvocationTargetException
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0
Any helps are appreciated, thanks a lot!
Activity
zbynek commentedon Nov 23, 2025
I think you need to pass the necessary
add-opensto the Java command that runs the tests. In Gradle it would be something like