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http://jira.codehaus.org/browse/SUREFIRE-700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=259517#action_259517
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Kristian Rosenvold commented on SUREFIRE-700:
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And, as can be seen from /src/site/apt/developingSurefire.apt this solution is
shade based and not classloader based, giving 100% isolation.
> Surefire is not isolated from itself
> ------------------------------------
>
> Key: SUREFIRE-700
> URL: http://jira.codehaus.org/browse/SUREFIRE-700
> Project: Maven Surefire
> Issue Type: Improvement
> Components: classloading
> Affects Versions: 2.4.1, 2.4.2, 2.4.3, 2.5, 2.6, 2.7, 2.7.1, 2.7.2
> Reporter: Kristian Rosenvold
> Assignee: Kristian Rosenvold
> Fix For: 2.8
>
> Attachments: stage2.patch
>
>
> The current classloader structure in surefire does not isolate surefire from
> changes to surefire in itself. This means an interface change in *most*
> private interfaces and classes can break the build of surefire itself.
> This is due to the classloader structure
> systemclassloader<-testclassloader<-providerclassloader, where a modified
> surefire immediately becomes effective by being loaded in testclassloader.
> This issue will be fixed by making the following structure:
> systemclassloader<-testframeworkclassloader<-testclassloader
> systemclassloader<-testframeworkclassloader<-surefireclassloader
> Pardon the ascii graphics but it seems like jira does not allow me to draw
> systemclassloader<-testframeworkclassloader as one common root ;)
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