Jacoco + Easymock
I'm currently working on a Java OSGi project(based on Apache felix runtime) with a project setup like the one below:
Basically I use maven + tycho to manage the lifecycle of the project. the whole stuff flows through a continuos integration pipeline which involves jenkins for building, testing, deploying and forwarding code analysis to a Sonarqube server. Just like mentioned above, tests are implemented through Fragment projects pointing OSGi bundles to be tested. In these tests I make use of EasyMock library to generate mocked OSGi bundles. In order to make Sonarqube aware of tests coverage I had to add Jacoco (maven plugin) into my sets of tools. After a few adjustments to the configuration of my parent pom.xml file I ended up with something that is working partially: jacoco code coverage is only working for classes included in test plugins (the fragment projects). As you may guess - though better than nothing - this result is far from being useful. I need to evalute test coverage on real OSGi bundles. After some googling I understood that the problem could be linked to the usage of EasyMock library, since this alterate original classes during execution causing a mismatch between test classes and real classes. According to my understanding, to solve I need to disable jacoco on-the-fly instrumentation and use offline instrumentation instead.
Nevertheless I'm not able to understand :
Can someone kindly revert on this ?
This is the maven command i'm running to generate jacoco report
mvn -f com.mycompany.osgi.myproject.pkg/pom.xml clean test
Below my current parent pom.xml
<?xml version="1.0" encoding="UTF-8"?><project
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.osgi</groupId>
<artifactId>com.mycompany.osgi.myproject.pkg</artifactId>
<packaging>pom</packaging>
<version>1.0.0</version>
<properties>
<tycho.version>1.0.0</tycho.version>
<surefire.version>2.16</surefire.version>
<main.basedir>${project.basedir}</main.basedir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jacoco.version>0.7.9</jacoco.version>
<!-- Sonar-JaCoCo properties -->
<sonar.java.coveragePlugin>jacoco</sonar.java.coveragePlugin>
<sonar.junit.reportPaths>${project.basedir}/target/surefire-reports</sonar.junit.reportPaths>
<sonar.jacoco.reportPaths>${project.basedir}/target/jacoco.exec</sonar.jacoco.reportPaths>
</properties>
<modules>
<module>../com.mycompany.osgi.myproject.core.persistence</module>
<module>../com.mycompany.osgi.myproject.core.persistence.tests</module>
</modules>
<build>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-compiler-plugin</artifactId>
<version>${tycho.version}</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.eclipse.tycho</groupId>
<artifactId>tycho-maven-plugin</artifactId>
<version>${tycho.version}</version>
<extensions>true</extensions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire.version}</version>
<dependencies>
<dependency>
<groupId>org.apache.maven.surefire</groupId>
<artifactId>surefire-junit47</artifactId>
<version>${surefire.version}</version>
</dependency>
</dependencies>
<executions>
<execution>
<id>test</id>
<phase>test</phase>
<configuration>
<testClassesDirectory>${project.build.outputDirectory}</testClassesDirectory>
</configuration>
<goals>
<goal>test</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
<repositories>
...
</repositories>
<distributionManagement>
...
</distributionManagement>
As suggested by @Godin, my problems were solved using the following jacoco plugin configurations
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<configuration>
<dataFile>../com.mycompany.myproject.pkg/target/jacoco.exec</dataFile>
<destFile>../com.mycompany.myproject.pkg/target/jacoco.exec</destFile>
<outputDirectory>../com.mycompany.myproject.pkg/target/site/jacoco</outputDirectory>
</configuration>
</plugin>
and this project configuration to instruct sonarqube to read expected resources
<properties>
...
<!-- Sonar-JaCoCo properties -->
<sonar.java.coveragePlugin>jacoco</sonar.java.coveragePlugin>
<sonar.junit.reportPaths>com.mycompany.myproject.pkg/target/surefire-reports</sonar.junit.reportPaths>
<sonar.jacoco.reportPaths>com.mycompany.myproject.pkg/target/jacoco.exec</sonar.jacoco.reportPaths>
</properties>
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