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http://jira.codehaus.org/browse/SUREFIRE-443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=154697#action_154697
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Anthony Whitford commented on SUREFIRE-443:
-------------------------------------------
For those of us using JPA, EJB3, and the [Seam
Framework|http://www.seamframework.org/], this is a pretty *BIG* deal. It
would be great to have this feature so that we can easily use _SeamTest_, gain
accurate coverage analysis, and overall promote the right thing: write tests!
> Provide option to merge test classpath into one directory
> ---------------------------------------------------------
>
> Key: SUREFIRE-443
> URL: http://jira.codehaus.org/browse/SUREFIRE-443
> Project: Maven Surefire
> Issue Type: New Feature
> Components: classloading
> Affects Versions: 2.4
> Environment: Maven 2.0.8
> Reporter: Cory Prowse
> Priority: Minor
> Fix For: Future
>
>
> Please provide an option for the test classpath to be merged into one
> directory.
> Maven sets up the class files as follows:
> {noformat}
> |-- target/test-classes
> | `-- Unit Test classes
> |-- target/classes
> `-- Classes to be tested
> {noformat}
> When running unit tests, the desired outcome is for any file in the
> "target/test-classes" tree to override those in the "target/classes".
> Specifically that any file in classes is ignored and overridden by the file
> in test-classes for the tests to work as expected.
> (In a sense a union on these two file trees in the order specified)
> The problem arises when using a container such as Embedded JBoss to test
> which treats each directory as a separate scope for classloading.
> Reading the ejb-3_0-fr-spec-persistence.pdf section "6.2.2 Persistence Unit
> Scope" spells it out quite clearly (a very short one page read) that if the
> "target/test-classes" and "target/classes" are each treated as a separate
> ejb-jar, then the runtime environment is not going to work due to these
> scoping rules.
> I have an ugly hack in place as follows which has the desired effect, but it
> would be more preferable if instead Maven Surefire provided an option to
> merge the directories together and have just one directory in the test
> classpath.
> {noformat}
> <build>
> <plugins>
> ...
> <plugin>
> <!-- This correctly merges the test-classes and classes
> directories for an EE container -->
> <artifactId>maven-antrun-plugin</artifactId>
> <executions>
> <execution>
> <id>setupTestClasspath</id>
> <phase>test-compile</phase>
> <configuration>
> <tasks>
> <echo message="Setting up a single merged
> test classpath directory" />
> <!-- move the originals -->
> <mkdir dir="${basedir}/target/tmp" />
> <move file="${basedir}/target/classes"
> todir="${basedir}/target/tmp" />
> <move file="${basedir}/target/test-classes"
> todir="${basedir}/target/tmp" />
> <!-- Merge into new directory -->
> <copy todir="${basedir}/target/test-classes"
> overwrite="true">
> <fileset
> dir="${basedir}/target/tmp/test-classes" />
> </copy>
> <copy todir="${basedir}/target/test-classes"
> overwrite="false">
> <fileset
> dir="${basedir}/target/tmp/classes" />
> </copy>
> <mkdir dir="${basedir}/target/classes" />
> </tasks>
> </configuration>
> <goals>
> <goal>run</goal>
> </goals>
> </execution>
> <execution>
> <id>restoreTestClasspath</id>
> <phase>test</phase>
> <configuration>
> <tasks>
> <echo message="Restoring original classes
> directories" />
> <delete dir="${basedir}/target/classes" />
> <move file="${basedir}/target/test-classes"
> tofile="${basedir}/target/test-classes-MERGED" />
> <move file="${basedir}/target/tmp/classes"
> todir="${basedir}/target" />
> <move
> file="${basedir}/target/tmp/test-classes" todir="${basedir}/target" />
> </tasks>
> </configuration>
> <goals>
> <goal>run</goal>
> </goals>
> </execution>
> </executions>
> </plugin>
> ...
> {noformat}
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