I am working on Cobertura and my problem is as follows :
As there is still no Maven2 Cobertura plug-in, I am trying to integrate
it under an ant task. Everything goes well but the report Cobertura
creates has always 0% coverage. The reason is that Cobertura needs to
know where are all the classes (instrumented, non-instrumented, test,
etc) it needs. To resolve that I need to pass these directories whre
are all my classes to the classpath. Under Ant, it is easy : you just
need to add the <classpath
location="target/cobertura/instrumented-classes" /> for example in the
Junit task. But in Maven2, as the JUnit task is automatic it is not so
easy...
Here is an extract of my pom.xml trying to do that :
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<classpathElements>
<classpathElement>target/cobertura/instrumented-classes</
classpathElement>
</classpathElements>
</configuration>
</plugin>
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<id>instrument-phase</id>
<phase>compile</phase>
<configuration>
<tasks>
<taskdef
classpath="/Users/mvanderwhale/.m2/repository/cobertura/cobertura/1.7/
cobertura-1.7.jar" resource="tasks.properties"/>
<property file="build.properties" />
<path id="cobertura_classpath">
<fileset dir="${cobertura.dir}">
<include name="cobertura.jar" />
</fileset>
<fileset dir="${lib.dir}">
<include name="**/*.jar" />
</fileset>
</path>
<delete file="${basedir}/cobertura.ser"/>
<delete dir="target/cobertura" />
<cobertura-instrument
todir="target/cobertura/instrumented-classes">
<ignore regex="org.apache.log4j.*" />
<fileset dir="target/classes">
<include name="**/*.class" />
<exclude name="**/*Test.class" />
</fileset>
</cobertura-instrument>
</tasks>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
<execution>
<id>report-phase</id>
<phase>test</phase>
<configuration>
<tasks>
<taskdef
classpath="/Users/mvanderwhale/.m2/repository/cobertura/cobertura/1.7/
cobertura-1.7.jar" resource="tasks.properties"/>
<property file="build.properties" />
<path id="cobertura_classpath">
<fileset dir="${cobertura.dir}">
<include name="cobertura.jar" />
</fileset>
<fileset dir="${lib.dir}">
<include name="**/*.jar" />
</fileset>
</path>
<cobertura-report format="html" destdir="target/cobertura/report"
srcdir="src/main/java/Mat" />
</tasks>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
As you can see, I tried to edit the surefire plug-in in order to add
<classpathElement>target/cobertura/instrumented-classes</
classpathElement> so that Cobertura knows where are these classes it
needs. Unfortunately, it leads to this error :
+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO]
------------------------------------------------------------------------
----
[INFO] Building Maven Quick Start Archetype
[INFO] task-segment: [test]
[INFO]
------------------------------------------------------------------------
----
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:compile]
Compiling 1 source file to
/Users/mvanderwhale/Documents/workspace/JUnitTest/test_app/target/
classes
[INFO] [antrun:run {execution: instrument-phase}]
[INFO] Executing tasks
[delete] Deleting:
/Users/mvanderwhale/Documents/workspace/JUnitTest/test_app/
cobertura.ser
[delete] Deleting directory
/Users/mvanderwhale/Documents/workspace/JUnitTest/test_app/target/
cobertura
[cobertura-instrument] Cobertura 1.7 - GNU GPL License (NO WARRANTY) -
See COPYRIGHT file
[cobertura-instrument] Instrumenting 3 classes to
/Users/mvanderwhale/Documents/workspace/JUnitTest/test_app/target/
cobertura/instrumented-classes
[cobertura-instrument] Cobertura: Saved information on 1 classes.
[cobertura-instrument] Instrument time: 390ms
[INFO] Executed tasks
[INFO] [resources:testResources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [compiler:testCompile]
Compiling 1 source file to
/Users/mvanderwhale/Documents/workspace/JUnitTest/test_app/target/test-
classes
[INFO]
------------------------------------------------------------------------
----
[ERROR] BUILD ERROR
[INFO]
------------------------------------------------------------------------
----
[INFO] Error configuring:
org.apache.maven.plugins:maven-surefire-plugin. Reason: ERROR: Cannot
override read-only parameter: classpathElements in goal: surefire:test
[INFO]
------------------------------------------------------------------------
----
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Error
configuring: org.apache.maven.plugins:maven-surefire-plugin. Reason:
ERROR: Cannot override read-only parameter: classpathElements in goal:
surefire:test
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Default
LifecycleExecutor.java:559)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifec
ycle(DefaultLifecycleExecutor.java:472)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultL
ifecycleExecutor.java:451)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandle
Failures(DefaultLifecycleExecutor.java:303)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(
DefaultLifecycleExecutor.java:270)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifec
ycleExecutor.java:139)
at
org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at
org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.PluginConfigurationException: Error
configuring: org.apache.maven.plugins:maven-surefire-plugin. Reason:
ERROR: Cannot override read-only parameter: classpathElements in goal:
surefire:test
at
org.apache.maven.plugin.DefaultPluginManager.validatePomConfiguration(De
faultPluginManager.java:868)
at
org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPl
uginManager.java:578)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginMa
nager.java:410)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(Default
LifecycleExecutor.java:530)
... 16 more
[INFO]
------------------------------------------------------------------------
----
[INFO] Total time: 14 seconds
[INFO] Finished at: Wed Jan 04 15:38:48 CET 2006
[INFO] Final Memory: 3M/9M
[INFO]
------------------------------------------------------------------------
----
Does anyone know how to edit this surefire plugin or another way to use
Cobertura in order to have correct reports?
Mathieu Vanderwhale
___________________________________________
DENALI sa - http://www.denali.be
Château de Clerlande - 1340 Ottignies - Belgium
Tel +32 (0) 10 43 99 51 - Fax +32 (0) 10 43 99 52
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