Usually generated sources should be created in the target dir. But how do I handle classes that are only used for test? I dont want that these classes get packaged in my jar
Use maven build helper plugin's add-test-source
goal to add your generated test source files to the build -> http://mojo.codehaus.org/build-helper-maven-plugin/add-test-source-mojo.html
It ensures that the directories added by this goal will be picked up automatically by the compiler plugin during test-compile
phase of the build.
EDIT
Here is the example of how to generate code for testign with cxf-codegen-plugin
<build>
<plugins>
...
<plugin>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-codegen-plugin</artifactId>
<version>${cxf.version}</version>
<executions>
<execution>
<id>generate-test-sources</id>
<phase>generate-test-sources</phase>
<configuration>
<sourceRoot>${project.build.directory}/generated/cxf</sourceRoot>
<wsdlOptions>
<wsdlOption>
<wsdl>${basedir}/src/main/wsdl/myService.wsdl</wsdl>
</wsdlOption>
</wsdlOptions>
</configuration>
<goals>
<goal>wsdl2java</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>${build-helper-maven-plugin.version}</version>
<executions>
<execution>
<id>add-test-sources</id>
<phase>generate-test-sources</phase>
<goals>
<goal>add-test-source</goal>
</goals>
<configuration>
<sources>
<source>${project.build.directory}/generated/cxf</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
...
</plugins>
</build>