[forge-issues] [JBoss JIRA] (FORGE-908) LinkageError while using ShrinkWrap classes in Arquillian

[Ondrej Zizka (JIRA)]

    [ https://issues.jboss.org/browse/FORGE-908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990182#comment-12990182 ] 

Ondrej Zizka commented on FORGE-908:
------------------------------------

Could you please extend the documentation with Do's & Don'ts with how to prevent this? Thx

> LinkageError while using ShrinkWrap classes in Arquillian
> ---------------------------------------------------------
>
>                 Key: FORGE-908
>                 URL: https://issues.jboss.org/browse/FORGE-908
>             Project: Forge
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Java EE
>    Affects Versions: 2.0.0.Alpha4
>            Reporter: George Gastaldi
>            Assignee: Lincoln Baxter III
>             Fix For: 2.0.0.Alpha5
>
>
> In javaee-tests, if you remove the @Ignore from the test test.org.jboss.forge.javaee.servlet.ServletFacetTest.testWebXMLCreatedWhenInstalled() you get the following exception:
> {code}
> Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/modules/ModuleClassLoader) previously initiated loading for a different type with name "org/jboss/shrinkwrap/descriptor/api/webapp30/WebAppDescriptor"
> 	at java.lang.ClassLoader.defineClass1(Native Method)
> 	at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
> 	at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
> 	at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:344)
> 	at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:422)
> 	at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:260)
> 	at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:75)
> 	at org.jboss.modules.Module.loadModuleClass(Module.java:528)
> 	at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:188)
> 	at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:444)
> 	at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:432)
> 	at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:399)
> 	at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:374)
> 	at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:119)
> 	at test.org.jboss.forge.javaee.servlet.ServletFacetTest.testWebXMLCreatedWhenInstalled(ServletFacetTest.java:63)
> 	... 88 more
> {code}



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