Jacoco Report Aggregate Coverage Report issue on Sonar - sonarqube

I have a multi-module maven project. I am facing issues while generating the sonar report for the jacoco report-aggregate coverage.
I have 2 modules (A and B) for which I want to generate the report.
I have created another module (jacoco-report-aggr) under the parent module for generating the report-aggregate of jacoco.
When I run "mvn clean install", the jacoco index.html fille generated in the jacoco-report-aggr module shows the coverage for both modules A and modules B. But when I run "mvn sonar:sonar" the sonar report generated shows
the coverage for only module B but not module A.
Attaching the corresponding parts of the xml files.
I have the parent pom.xml as below.
<sonar.java.coveragePlugin>jacoco-maven-plugin</sonar.java.coveragePlugin>
<sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
<sonar.language>java</sonar.language>
<jacoco.version>0.8.5</jacoco.version>
<surefire.plugin.version>2.19.1</surefire.plugin.version>
<aggregate.report.dir>jacoco-report-aggr/target/site/jacoco-aggregate/jacoco.xml</aggregate.report.dir>
<sonar.coverage.jacoco.xmlReportPaths>/jacoco-report-aggr/target/site/jacoco/jacoco.xml,/jacoco-report-aggr/target/site/jacoco-aggregate/jacoco.xml,
${basedir}/../${aggregate.report.dir},
${basedir}/../../${aggregate.report.dir},
${basedir}/../../${aggregate.report.dir}</sonar.coverage.jacoco.xmlReportPaths>
<!--Jacoco Code Coverage Plugin. Only start the agent-->
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<executions>
<execution>
<id>pre-unit-test</id>
<goals>
<goal>prepare-agent</goal>
<goal>report</goal>
</goals>
<configuration>
<propertyName>jacoco.agent.argLine</propertyName>
<destFile>target/jacoco.exec</destFile>
</configuration>
</execution>
<execution>
<id>prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
<!--Maven Surefire Plugin-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire.plugin.version}</version>
</plugin>
<plugin>
<groupId>org.sonarsource.scanner.maven</groupId>
<artifactId>sonar-maven-plugin</artifactId>
<version>3.7.0.1746</version>
</plugin>
The child modules pom looks like this.
<properties>
<sonar.coverage.jacoco.xmlReportPaths>${basedir}/../${aggregate.report.dir}</sonar.coverage.jacoco.xmlReportPaths>
</properties>
The pom.xml file of the jacoco-report-aggr module looked like this
<dependencies>
<dependency>"Module A"</dependency>
<dependency>"Module B"</dependency>
</dependencies>
<properties>
<sonar.coverage.jacoco.xmlReportPaths>${basedir}/../${aggregate.report.dir}
</sonar.coverage.jacoco.xmlReportPaths>
</properties>
<build>
<plugins>
<!--Maven Surefire Plugin-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire.plugin.version}</version>
</plugin>
<!--Jacoco Aggregate Report plugin over dependencies-->
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<executions>
<execution>
<id>report-aggregate</id>
<phase>verify</phase>
<goals>
<goal>report-aggregate</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>

Related

Issue Code Coverage for Maven MultiModule Project

Currently we are trying to get code coverage for multi-level module maven project . Below is the snippet of the same
parent
- child1
- sub-child1
- sub-child2
- child2
- sub-child1
- sub-child2
pom.xml
We have used the Jacoco plugin and tried generating the code coverage but it down't seem to be generating any jacoco executable file .
Any guidance over the same would be really helpful
Tried referring and executing the same
https://github.com/acntech/jacoco-multimodule-maven
<properties>
<jacoco.version>0.7.9</jacoco.version>
<sonar.jacoco.reportPaths>${project.basedir}/../target/jacoco.exec</sonar.jacoco.reportPaths>
<sonar.jacoco.itReportPath>${project.basedir}/../target/jacoco-it.exec</sonar.jacoco.itReportPath>
<sonar.language>java</sonar.language>
<sonar.java.coveragePlugin>jacoco</sonar.java.coveragePlugin>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<executions>
<execution>
<id>agent-for-ut</id>
<goals>
<goal>prepare-agent</goal>
</goals>
<configuration>
<append>true</append>
<destFile>${sonar.jacoco.reportPaths}</destFile>
</configuration>
</execution>
<execution>
<id>agent-for-it</id>
<phase>package</phase>
<goals>
<goal>prepare-agent-integration</goal>
</goals>
<configuration>
<append>true</append>
<destFile>${sonar.jacoco.itReportPath}</destFile>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
I expect the jacoco plugin to generate a single exe file and push the results to sonarqube

Configuring jacoco for integration and unit test reporting in Sonarqube with Powermock

I am using Sonarqube to keep track of both unit and integration test coverage for a multi-module Maven project.
This was the existing profile in the parent pom.xml that was used to generate the Sonarqube report locally before I made the change:
Profile that generates all unit test coverage locally in Sonarqube
<profiles>
<profile>
<id>coverage</id>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<sonar.jacoco.reportPaths>${project.basedir}/../target/jacoco.exec</sonar.jacoco.reportPaths>
<sonar.projectName>plan-advantage-serverless-${project.artifactId}</sonar.projectName>
<sonar.projectKey>${project.groupId}-MPA-${project.artifactId}</sonar.projectKey>
<sonar.exclusions>file:**/generated-sources/**,**/*Model.java,**/models/**/*</sonar.exclusions>
<sonar.test.exclusions>**/test/*</sonar.test.exclusions>
<sonar.java.coveragePlugin>jacoco</sonar.java.coveragePlugin>
<sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
<sonar.language>java</sonar.language>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.8.2</version>
<configuration>
<append>true</append>
<excludes>
<exclude>**/test/*</exclude>
</excludes>
</configuration>
<executions>
<execution>
<id>default-instrument</id>
<goals>
<goal>instrument</goal>
</goals>
</execution>
<execution>
<id>default-restore-instrumented-classes</id>
<goals>
<goal>restore-instrumented-classes</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<showWarnings>true</showWarnings>
<compilerArgs>
<arg>-Xlint:all</arg>
<arg>-Xlint:-processing</arg>
</compilerArgs>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.0</version>
<configuration>
<argLine>-XX:-UseSplitVerifier</argLine>
<systemPropertyVariables>
<jacoco-agent.destfile>${sonar.jacoco.reportPaths}</jacoco-agent.destfile>
</systemPropertyVariables>
</configuration>
<dependencies>
<!-- needed for powermock to run correctly with surefire-->
<dependency>
<groupId>org.apache.maven.surefire</groupId>
<artifactId>surefire-junit47</artifactId>
<version>2.22.0</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.sonarsource.scanner.maven</groupId>
<artifactId>sonar-maven-plugin</artifactId>
<version>3.5.0.1254</version>
</plugin>
</plugins>
</build>
</profile>
This is generating the expected test coverage (sans integration tests) in
Sonarqube locally when I run mvn clean install -P coverage sonar:sonar.
I've so far been able to get integration coverage added as a proof of concept using the following addition
to the parent pom.xml:
pom.xml that includes integration test coverage in Sonarqube but excludes some unit tests
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<jacoco.version>0.7.9</jacoco.version> . <sonar.jacoco.reportPaths>${project.basedir}/../target/jacoco.exec</sonar.jacoco.reportPaths>
<sonar.jacoco.itReportPath>${project.basedir}/../target/jacoco-it.exec</sonar.jacoco.itReportPath>
<sonar.language>java</sonar.language>
<sonar.java.coveragePlugin>jacoco</sonar.java.coveragePlugin>
</properties>
...
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-failsafe-plugin</artifactId>
<version>3.0.0-M3</version>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
<dependencies>
<dependency>
<groupId>org.apache.maven.surefire</groupId>
<artifactId>surefire-junit47</artifactId>
<version>3.0.0-M3</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<executions>
<execution>
<id>agent-for-ut</id>
<goals>
<goal>prepare-agent</goal>
</goals>
<configuration>
<append>true</append>
<destFile>${sonar.jacoco.reportPaths}</destFile>
</configuration>
</execution>
<execution>
<id>agent-for-it</id>
<phase>package</phase>
<goals>
<goal>prepare-agent-integration</goal>
</goals>
<configuration>
<append>true</append>
<destFile>${sonar.jacoco.itReportPath}</destFile>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
This was inspired by the example found here.
However, when I run it with the command mvn clean install failsafe:integration-test sonar:sonar, it causes some of the unit tests which were previously being covered to not show up in the Sonarqube output. I believe that the prepare-agent and prepare-agent integrationgoals are using on-the-fly instrumentation. According to JaCoCo's docs, on-the-fly instrumentation is not possible while using PowerMock (which my project is utilizing), so we have to use the offline instrumentation for JaCoCo.
I looked at this example for using offline instrumentation and used the following pom.xml with the command mvn clean install test sonar:sonar:
parent pom.xml that fails to build due to NoClassDefFound errors
<build>
...
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<executions>
<execution>
<id>default-instrument</id>
<goals>
<goal>instrument</goal>
</goals>
</execution>
<execution>
<id>default-restore-instrumented-classes</id>
<goals>
<goal>restore-instrumented-classes</goal>
</goals>
</execution>
</executions>
</plugin>
</build>
And here's the resulting error:
Any ideas for the proper pom.xml configuration to enable offline instrumentation to get integration and unit test coverage to show up in Sonarqube?
I know this question is 10 months old, but for anyone else coming across this, you need to add this to your dependencies in your pom.xml file.
<dependency>
<groupId>org.jacoco</groupId>
<artifactId>org.jacoco.agent</artifactId>
<classifier>runtime</classifier>
<version>${jacoco.version}</version>
<scope>test</scope>
</dependency>

Get Arquillians Code Coverage Using JaCoCo

I have a Maven build that runs Arquillian tests on a Wildfly. What I want to do is run JaCoCo as well so that I get a test coverage.
What I did to my working Arquillian setup: I changed the parent's pom.xml the following way:
<properties>
<sonar.java.coveragePlugin>jacoco</sonar.java.coveragePlugin>
<sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
<jacoco.out.ut.file>../target/jacoco/jacoco-ut.exec</jacoco.out.ut.file>
<jacoco.out.it.file>../target/jacoco/jacoco-it.exec</jacoco.out.it.file>
<sonar.jacoco.reportPaths>${jacoco.out.ut.file},${jacoco.out.it.file}</sonar.jacoco.reportPaths>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<executions>
<execution>
<id>prepare-ut-agent</id>
<phase>process-test-classes</phase>
<goals>
<goal>prepare-agent</goal>
</goals>
<configuration>
<destFile>${jacoco.out.ut.file}</destFile>
<propertyName>jacoco.agent.ut.arg</propertyName>
<append>true</append>
</configuration>
</execution>
<execution>
<id>prepare-it-agent</id>
<phase>package</phase>
<goals>
<goal>prepare-agent-integration</goal>
</goals>
<configuration>
<destFile>${jacoco.out.it.file}</destFile>
<propertyName>jacoco.agent.it.arg</propertyName>
<append>true</append>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-failsafe-plugin</artifactId>
<configuration>
<argLine>${test.argLine} ${jacoco.agent.it.arg}</argLine>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>${test.argLine} ${jacoco.agent.ut.arg}</argLine>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
That's a setup that works in multiple other projects (without Arquillian), so I assume it must work now, too.
For the module hosting the integration project I added the following:
<dependencies>
<dependency>
<groupId>org.jboss.arquillian.extension</groupId>
<artifactId>arquillian-jacoco</artifactId>
<version>1.0.0.Alpha9</version>
<scope>test</scope>
</dependency>
</dependencies>
The maven-surefire-plugin is called there (which is weird to me, but I tried maven-failsafe-plugin and it didn't work either).
When executed the module produces a jacoco.exec (which is 70kb for only the one module, so at least not empty). Sonar uses these files in the report generation. Still the code coverage gets displayed as 0%.
I found a couple tutorials on this topic, but they all seem to be missing a step (at least the setup is always identical to mine).
How do I get Arquillian to use JaCoCo to report the code coverage?

SonarQube not reading Integration JaCoCo Test coverage in parent pom target directory of a multi-module project

I have followed the instructions for enabling Unit and Integration tests for our Sonar Project here:
http://docs.sonarqube.org/display/PLUG/Code+Coverage+by+Integration+Tests+for+Java+Project
My pom settings are almost identical to the settings given in this example:
https://github.com/SonarSource/sonar-examples/tree/master/projects/languages/java/code-coverage/combined%20ut-it/combined-ut-it-multimodule-maven-jacoco
parent pom settings:
<profile>
<id>code-coverage</id>
<build>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<configuration>
<append>true</append>
</configuration>
<executions>
<execution>
<id>default-prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>default-agent-for-it</id>
<goals>
<goal>prepare-agent-integration</goal>
</goals>
</execution>
<execution>
<id>default-report</id>
<phase>verify</phase>
<goals>
<goal>report</goal>
</goals>
<configuration>
<excludes>
<exclude>static/**/*.jar</exclude>
<exclude>static/**/*.class</exclude>
</excludes>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
We have a specific module that will run the integration tests:
<profile>
<id>code-coverage</id>
<build>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<configuration>
<!-- The destination file for the code coverage report has to be set to the same value
in the parent pom and in each module pom. Then JaCoCo will add up information in
the same report, so that, it will give the cross-module code coverage. -->
<destFile>${project.basedir}/../target/jacoco-it.exec</destFile>
</configuration>
</plugin>
</plugins>
</build>
</profile>
I have configured Sonar to look for UT and IT:
Unit tests are being reported fine, but not Integration tests. In the Bamboo logs I can see that sonar is looking for integration tests and unit tests in all the submodules, but when it gets to the parent module it never runs the JaCoCoSensor or the JaCoCoItSensor. Both of those Sensors are run for each of the module projects. I also noticed there is a JaCoCoOverallSensor run for each module project but not the parent project.
How do I get the JaCoCoItSensor to run for the parent project?
I added a few configuration properties and it started working.
parent pom.xml added:
<properties>
...
<sonar.jacoco.itReportPath>${project.basedir}/../target/jacoco-it.exec</sonar.jacoco.itReportPath>
<sonar.language>java</sonar.language>
</properties>
IT Tests module I changed:
<destFile>${sonar.jacoco.itReportPath}/../target/jacoco-it.exec</destFile>
To this:
<destFile>${sonar.jacoco.itReportPath}</destFile>

JaCoCo not generating jacoco.exec until after skipping JaCoCo execution

I'm having trouble generating AHP reports via JaCoCo in one of my modules. When the build starts, I see JaCoCo correctly setting argLine with:
[INFO] jacoco.agent.argLine set to -javaagent:<...>/.m2/repository/org/jacoco/org.jacoco.agent/0.7.2.201409121644/org.jacoco.agent-0.7.2.201409121644-runtime.jar=destfile=<...>/target/jacoco.exec
However, the .exec hasn't been created yet by the time maven tries to run JaCoCo:
[INFO] Skipping JaCoCo execution due to missing execution data file:<...>/target/jacoco.exec
The jacoco.exec does eventually get created, after maven has skipped JaCoCo execution. Therefore, I can still generate AHP reports, if I re-run the build without cleaning.
I've seen in various other questions that I need to be careful using Maven Surefire with JaCoCo. However, I don't explicitly use argLine in my Surefire plugins, or in any plugin for that matter. I'm starting to wonder if one of the other plugins is hijacking the argLine parameter automatically like JaCoCo does.
Here is a list of all plugins used:
jacoco-maven-plugin
vertx-maven-plugin
maven-resources-plugin
maven-dependency-plugin
maven-surefire-plugin
maven-failsafe-plugin
maven-surefire-report-plugin
maven-assembly-plugin
I do see one suspicious message in the build output:
[INFO] --- maven-compiler-plugin:3.0:compile (default-compile) # <module> ---
[INFO] Changes detected - recompiling the module!
I'm not sure if that's relevant, but it appears twice before the Skipping message, and doesn't appear in a module where JaCoCo works properly.
Any ideas?
*edit - Here's the jacoco config
<plugins>
<...>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>${jacoco.version}</version>
<executions>
<execution>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.jacoco</groupId>
<artifactId>
jacoco-maven-plugin
</artifactId>
<versionRange>
[0.7.2.201409121644,)
</versionRange>
<goals>
<goal>prepare-agent</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
I'm not sure exactly what that plugin management part is doing, but commenting it out doesn't fix anything. I've also tried putting the JaCoCo plugin config above the surefire/failsafe config in case order mattered for plugins sharing the same goals, but that didn't help either.
*edit 2 - Looks like the problem was surefire's includes. Commenting them out somehow fixes JaCoCo's .exec generation, and JaCoCo works properly.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven.surefire.plugin.version}</version>
<configuration>
<!-- <includes>
<include>**/unit/**/*Test*.java</include>
</includes> -->
</configuration>
</plugin>
Anyone know why?
Just an addition to the answers already given.
It could happen that in your maven-surefire-plugin configuration you already use the argLine configuration to override something like the memory used. If you do so the argline set by jacoco-maven-plugin will not be used failing to generate the jacoco report.
In this case assign a property name to the jacoco-maven-plugin config and then reference it in your maven-surefire-plugin argLine parameter.
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.7.9</version>
<executions>
<!-- prepare agent for measuring unit tests -->
<execution>
<id>prepare-unit-tests</id>
<goals>
<goal>prepare-agent</goal>
</goals>
<configuration>
<append>true</append>
<destFile>${sonar.jacoco.reportPath}</destFile>
<!-- Sets the VM argument line used when unit tests are run. -->
<propertyName>surefireArgLine</propertyName>
</configuration>
</execution>
</executions>
</plugin>
[...]
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.19.1</version>
<configuration>
<printSummary>false</printSummary>
<redirectTestOutputToFile>true</redirectTestOutputToFile>
<forkCount>3</forkCount>
<reuseForks>true</reuseForks>
<argLine>${surefireArgLine} -Xmx1024m -noverify</argLine>
</configuration>
</plugin>
To solve this issue I would use the following three steps:
Determine which plugin execution is producing the jacoco.exec file. To do that, you could run Maven with debug logging enabled (mvn -X) and look for the jacoco.agent.argLine property name or its value in the output. You could also have a look at the effective POM (mvn help:effective-pom) in case the relevant configuration comes from the parent POM. Note that my guess is that it's an execution of the maven-failsafe-plugin.
Determine the phase that plugin is executed in. E.g. for maven-failsafe-plugin this would likely be integration-test.
Change the configuration of the JaCoCo plugin so that the report goal is executed later in the build lifecycle. E.g. if the jacoco.exec file is produced in the integration-test phase, you could execute the report goal in the post-integration-test phase.
In my case the solution was what #massimo mentioned, i was overriding memory values inside <surefireArgLine> tag, after i removed the tag it started generating the report and showed code coverage.
for me one of the reason for exec file not getting generated is when i placed the prepare-agent , prepare-package goals inside plugin section of pluginManagement
when i tried the same outside pluginManagement , i was sucessfully able to run the same and jacoco-exec file was generated using mvn clean install command
my pomfile is as below :
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>mmt</groupId>
<artifactId>jacoco</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>jacoco</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<argLine>-Xms256m -Xmx1524m -XX:MaxPermSize=256m -Duser.language=en</argLine>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.7.7.201606060606</version>
<executions>
<execution>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
I did not find any solution, but I did the following:
mvn clean jacoco:prepare-agent install
create file jacoco.exec, but execute mvn sonar:sonar not create File.
Solution:
Step 1:
mvn clean jacoco:prepare-agent install
Step 2:
copy file jacoco.exec from /src/main/resources
Step 3:
Add next plugin on pom.xml
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<id>copy-resources</id>
<phase>validate</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>
${basedir}/target/</outputDirectory>
<resources>
<resource>
<directory>
${basedir}/src/main/resources/ </directory>
<includes>
<include>jacoco.exec</include>
</includes>
</resource>
</resources>
</configuration>
</execution>
</executions>
<configuration>
<encoding>cp1252</encoding>
</configuration>
</plugin>
Step 4:
mvn clean install
Step 5:
mvn sonar:sonar
READY
Add my section Plugins
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<encoding>cp1252</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.7</version>
<executions>
<execution>
<id>copy-resources</id>
<phase>validate</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>
${basedir}/target/</outputDirectory>
<resources>
<resource>
<directory>
${basedir}/src/main/resources/ </directory>
<includes>
<include>jacoco.exec</include>
</includes>
</resource>
</resources>
</configuration>
</execution>
<execution>
<id>copy-folder</id>
<phase>package</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}</outputDirectory>
<resources>
<resource>
<filtering>false</filtering>
<directory>${project.basedir}/src/main/resources</directory>
</resource>
</resources>
</configuration>
</execution>
</executions>
<configuration>
<encoding>cp1252</encoding>
</configuration>
</plugin>
<!-- Plugin Sonar -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>2.5.1</version>
</plugin>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.7.6.201602180812</version>
<configuration>
<destFile>${project.build.directory}/jacoco.exec</destFile>
</configuration>
<executions>
<execution>
<id>jacoco-initialize</id>
<goals>
<goal>prepare-agent</goal>
</goals>
<configuration>
<destFile>${basedir}/target/jacoco.exec</destFile>
<dataFile>${basedir}/target/jacoco.exec</dataFile>
</configuration>
</execution>
<execution>
<id>jacoco-site</id>
<phase>package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
I also faced the same problem where jacoco plugin was added to parent pom, and jacoco.exec file was generating for one of the sub modules. I had to remove the argLine arguments of maven surefire plugin, then it got generated.

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