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https://jira.codehaus.org/browse/SUREFIRE-951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=319824#comment-319824
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Stephan Schroevers commented on SUREFIRE-951:
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Another property that only takes effect when set using {{<argLine>}} (i.e., not
when using {{<systemPropertyVariables>}}) is
[{{jdk.map.althashing.threshold}}|http://docs.oracle.com/javase/7/docs/technotes/guides/collections/changes7.html].
(Perhaps I should create a separate ticket for that?)
> Better handling of file.encoding system property
> ------------------------------------------------
>
> Key: SUREFIRE-951
> URL: https://jira.codehaus.org/browse/SUREFIRE-951
> Project: Maven Surefire
> Issue Type: Bug
> Components: Maven Surefire Plugin, process forking
> Affects Versions: 2.13
> Environment: Any environment in which the file encoding is distinct
> from ${project.build.sourceEncoding}.
> Reporter: Stephan Schroevers
> Attachments: file-encoding-example.tbz
>
>
> It appears that Surefire doesn't (correctly) set
> {{-Dfile.encoding=$\{project.build.sourceEncoding\}}} prior to running the
> tests. As a result the JVM will derive {{file.encoding}} from the
> environment's file encoding. This affects the return value of
> {{java.nio.charset.Charset#defaultCharset()}}, which reads the
> {{file.encoding}} system property exactly once, and is invoked very early on.
> Concretely this means that the unit tests are unnecessarily platform
> dependent.
> Thus I have two requests:
> # Make {{-Dfile.encoding=$\{project.build.sourceEncoding\}}} the default.
> That is, the following configuration setting should be implied:
> {noformat}
> <argLine>-Dfile.encoding=${project.build.sourceEncoding}</argLine>
> {noformat}
> # Extend the method
> {{org.apache.maven.plugin.surefire.SurefireProperties#verifyLegalSystemProperties(org.apache.maven.plugin.logging.Log)}}
> such that is warns about users attempting to set the {{file.encoding}}
> property through the {{systemPropertyVariables}} configuration setting. Like
> with {{java.library.path}}, this does _not_ work.
> I have [attached|^file-encoding-example.tbz] a sample project that
> demonstrates the issue (simply run {{`mvn test`}}). Please have a look at the
> comments I added to the POM. I have tested this sample project only on Linux,
> but a colleague has confirmed that an instance of this issue can also be
> recreated on Windows.
> TIA for looking into this!
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