Problems with the Mrov2 Multiproject Cobertura message during Build mvn site

Question

We have a multiproject that we are trying to launch Cobertura test coverage reports as part of our mvn site assembly. I can get Cobertura to work on child projects, but it mistakenly reports 0% coverage, although reports still highlight lines of code that have been affected by unit tests.

We are using mvn 2.0.8. I tried to work mvn clean site, mvn clean site:stageand mvn clean package site. I know that the tests are running, they are displayed in surefire reports (txt / xml and site reports). Am I missing something in the configuration? Does Cobertura include the right to work with multi-projects?

This is in the parent .pom:

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>cobertura-maven-plugin</artifactId>
                <inherited>true</inherited>
                <executions>
                    <execution>
                        <id>clean</id>
                        <goals>
                            <goal>clean</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </pluginManagement>
</build>
<reporting>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>cobertura-maven-plugin</artifactId>
            <inherited>true</inherited>
        </plugin>
    </plugins>
</reporting>

I tried running it with and without the following in a child .poms:

    <reporting>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>cobertura-maven-plugin</artifactId>
        </plugin>
    </plugins>
</reporting>

I get this at the output of the assembly:

...
[INFO] [cobertura:instrument]
[INFO] Cobertura 1.9 - GNU GPL License (NO WARRANTY) - See COPYRIGHT file
Instrumenting 3 files to C:\workspaces\sandbox\CommonJsf\target\generated-classes\cobertura
Cobertura: Saved information on 3 classes.
Instrument time: 186ms

[INFO] Instrumentation was successful.
...
[INFO] Generating "Cobertura Test Coverage" report.
[INFO] Cobertura 1.9 - GNU GPL License (NO WARRANTY) - See COPYRIGHT file
Cobertura: Loaded information on 3 classes.
Report time: 481ms

[INFO] Cobertura Report generation was successful.

: cobertura http://trandem.com/images/cobertura.png

Answer 1

, cobertura , , . , , . - , , cobertura: instrument.

, pluginManagement (, ), cobertura :

  <build>
  ...
    <plugins>
    ...
      <plugin>
        <inherited>true</inherited>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>cobertura-maven-plugin</artifactId>
        <version>${cobertura.plugin.version}</version>
      </plugin>
    </plugins>
  </build>

, Cobertura pom, .

, , Cobertura pom.xml, .

Answer 2

, Cobertura . .

sonar . , , .

Answer 3

, , , . - .ser, Cobertura. , cobertura-merge maven.

, , , , 3 .

Answer 4

@Marco , maven , maven cobertura .

maven ant: http://thomassundberg.wordpress.com/2012/02/18/test-coverage-in-a-multi-module-maven-project/

, , , . .ser :

//in test project
<plugin> 
<groupId>com.github.goldin</groupId>
<artifactId>copy-maven-plugin</artifactId>
<version>0.2.5</version>
<executions>
    <execution>
    <id>copy-cobertura-data-from-project-under-test</id>
    <phase>compile</phase>
    <goals>
        <goal>copy</goal>
    </goals>
    <configuration>
    <resources>
        <resource>
                        <directory>${project.basedir}/../<project-under-test>/target/cobertura</directory>
                            <targetPath>${project.basedir}/target/cobertura</targetPath>
                <includes>                  
                              <include>*.ser</include>
                </includes>
           </resource>
           <resource>
                    <directory>${project.basedir}/../<project-under-test>/target/generated-classes/cobertura/</directory>
                    <targetPath>${project.basedir}/target/generated-classes/cobertura</targetPath>
                    <preservePath>true</preservePath>
           </resource>
        </resources>
            </configuration>
        </execution>
</executions>
</plugin>

//in parent project
<build>
<plugins>
    <plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>cobertura-maven-plugin</artifactId>
    <configuration>
        <format>xml</format>
        <aggregate>true</aggregate>
    </configuration>
    <executions>
        <execution>
                    <goals>
                <goal>clean</goal>
            </goals>
        </execution>
    </executions>
</plugin>
    </plugins>
</build>
<reporting>
<plugins>
    <plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>cobertura-maven-plugin</artifactId>
    <version>${cobertura.version}</version>
        </plugin>
</plugins>
 </reporting>