[emma-maven-plugin] Allow generating reports outside the emma:emma goal
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Key: MOJO-1299
URL: http://jira.codehaus.org/browse/MOJO-1299
Project: Mojo
Issue Type: Improvement
Components: emma
Reporter: Philippe Laflamme
Currently, the emma:emma goals generates the reports but also forces the
execution of a test lifecycle. This is limiting for users not wanting to run
the unit tests twice (once instrumented, once not instrumented). It may seem
like a minor issue, but we have projects with hundreds of test cases. One
execution takes several minutes to complete.
The suggested improvement is to add a "report" goal that would only convert the
coverage.em file to a coverage.xml/index.html file (as necessary). This would
allow configuring everything through the <build> section like so (example):
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>emma-maven-plugin</artifactId>
<version>1.0-alpha-1</version>
<inherited>true</inherited>
<executions>
<execution>
<phase>process-classes</phase>
<goals>
<goal>instrument</goal>
</goals>
</execution>
<execution>
<phase>verify</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<inherited>true</inherited>
<configuration>
<forkMode>once</forkMode>
<reportFormat>xml</reportFormat>
<classesDirectory>${project.build.directory}/generated-classes/emma/classes</classesDirectory>
</configuration>
</plugin>
</plugins>
</build>
I can now obtain the coverage.xml file without executing the test cases twice.
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