Jacoco - "Caused by: Java. Lang. Classnotfoundexception: Org. Jacoco. Agent. Rt. Internal_6Da5971. Offline"
Trying to Get Coverage via Jacoco Using Offline Instrumentation (Can't Use on-the-Fly Instrumentation: Due to Powermock Testcases) for a Maven Project. Added...
Trying to get coverage via jacoco using offline instrumentation (can't use on-the-fly instrumentation: due to powermock testcases) for a maven project.Added the jacocoagent.jar to classpath in surefire plugin as shown below. Renamed the "org.jacoco.agent-0.7.7.201606060606-runtime.jar" (from local maven repository) to "jacocoagent.jar" and kept that in the same folder where this pom.xml is residing.I'm hitting the below exception even after adding it to classpath.
snippet of pom.xml (surefire - plugin configuration)
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<forkmode>once</forkmode>
<additionalClasspathElements>
<additionalClasspathElement>jacocoagent.jar</additionalClasspathElement>
</additionalClasspathElements>
</configuration>
</plugin>
Exception seen on console:
#############
Number of foreign imports: 1
import: Entry[import from realm ClassRealm[maven.api, parent: null]]
-----------------------------------------------------
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:166)
... 21 more
Caused by: java.lang.NoClassDefFoundError: org/jacoco/agent/rt/internal_6da5971/Offline
at com.cisco.ise.ups.modelframework.hibernate.OracleNamingStrategy.$jacocoInit(OracleNamingStrategy.java)
at com.cisco.ise.ups.modelframework.hibernate.OracleNamingStrategy.<clinit>(OracleNamingStrategy.java)
at sun.misc.Unsafe.ensureClassInitialized(Native Method)
at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)
at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:142)
at java.lang.reflect.Field.acquireFieldAccessor(Field.java:1082)
at java.lang.reflect.Field.getFieldAccessor(Field.java:1063)
at java.lang.reflect.Field.get(Field.java:387)
at com.cisco.ise.ups.build.WorkflowRunnerMojo.namingStrategyInstance(WorkflowRunnerMojo.java:335)
at com.cisco.ise.ups.build.WorkflowRunnerMojo.setupWorkflowEnvironment(WorkflowRunnerMojo.java:514)
at com.cisco.ise.ups.build.WorkflowRunnerMojo.execute(WorkflowRunnerMojo.java:816)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more
Caused by: java.lang.ClassNotFoundException: org.jacoco.agent.rt.internal_6da5971.Offline
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.unsynchronizedLoadClass(ClassRealm.java:271)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:247)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:239)
... 33 more
[ERROR]
###############
Steps followed:
- "mvn compile" .
- "mvn org.jacoco:jacoco-maven-plugin:instrument"
- "mvn test" - Exception raised at this step.
Please let me know of how to get rid of this exception ? Was that the right place to add classpath?? (in surefire plugin) OR should it be specified some where??
Thank you.
2 Answers
The classpath stuff on the surefire plugin is not necessary. You need to add a dependency to each module that has tests, like this:
<dependency>
<groupId>org.jacoco</groupId>
<artifactId>org.jacoco.agent</artifactId>
<classifier>runtime</classifier>
<scope>test</scope>
<version>${your.jacoco.version}</version>
</dependency>
Make sure you don't miss the "classifier" part, or it won't work.
dr. macphail's trance article on getting Sonar + JaCoCo + PowerMock did the job for me:
<!-- Provide information for coverage per test -->
<profile>
<id>coverage-per-test</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20</version>
<configuration>
<argLine>${argLine} -Xverify:none</argLine>
<properties>
<property>
<name>listener</name>
<value>org.sonar.java.jacoco.JUnitListener</value>
</property>
</properties>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.sonarsource.java</groupId>
<artifactId>sonar-jacoco-listeners</artifactId>
<version>4.9.0.9858</version>
<scope>test</scope>
</dependency>
</dependencies>
</profile>
As mentioned in the comments section of the blog post :
In case your default argLine is not “simple” you might need to use the following snippet:
{argLine} -XX:-UseSplitVerifier
Otherwise you might run into ClassNotFoundException – e.g. java.lang.ClassNotFoundException: org.jacoco.agent.rt.RT
Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.
