How to exclude and include properly classes, packages and jar classes, lib from the jacoco report (Instrumentation offline)

Question

I am using JaCoCo code coverage, but the report is including classes from jar, lib. (Offline Instrumentation, Maven)

I solved the problem with the offline configuration since "aspectj-maven-plugin" was changing the class files, and also now I successfully exclude the packages outside of target/classes -> src. thanks to this answer in stackoverflow. But now I am getting the classes from jar, lib inside the report and I have not idea how to exclude then. I Show my configuration and examples below

I also tried this solution Exclude classes of jar files from jacoco coverage report But it doesn't work for me. <exclude>**/lib/*</exclude>

My jacoco offline configuration:

<properties>
  <jacoco.version>0.8.4</jacoco.version>
  <argLine></argLine>
</properties>


<dependency>
  <groupId>org.jacoco</groupId>
  <artifactId>org.jacoco.agent</artifactId>
  <classifier>runtime</classifier>
  <version>${jacoco.version}</version>
</dependency>

            <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>${jacoco.version}</version>
                <executions>
                    <execution>
                    <goals>
                        <goal>instrument</goal>
                        <goal>restore-instrumented-classes</goal>
                        <goal>report</goal>
                    </goals>
                    <configuration>
                        <!-- this configuration affects all goals -->
                        <excludes>
                            <exclude>*</exclude>
                            <exclude>com/company/rrPackage/**/*.class</exclude>
                            <exclude>org/**/*.class</exclude>                                               
                        </excludes>
                    </configuration>
                    </execution>
                </executions>
            </plugin>

surefire-plugin

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.15</version>
                <configuration>
                    <testNGArtifactName>...</testNGArtifactName>
                    <suiteXmlFiles>
                        <suiteXmlFile>...</suiteXmlFile>
                    </suiteXmlFiles>
                    <skip>${skip.test}</skip>
                    <systemPropertyVariables>
                        <jacoco-agent.destfile>target/jacoco.exec</jacoco-agent.destfile>                       
                    </systemPropertyVariables>
                    <properties>
                        ... 
                    </properties>
                </configuration>
            </plugin>

And the reason what I think that I am getting classes from jar inside de jacoco:report. In my pom.xml I have the following dependencies:

<dependency>
    <groupId>org.hsqldb</groupId>
    <artifactId>hsqldb</artifactId>
    <version>2.2.9</version>
</dependency>

Also I have a couple of import in my classes like this

import org.hsqldb.lib.StringUtil;

for example: This has no dependency on the pom.xml but is used in one of the project classes, and jacoco shows it in the report

import javax.mail.internet.AddressException;

I have other cases with the same behavior that result in the same problem: Jacoco show those classes from jar in the report, as shown in the images

Answer 1

Try includes instead of excludes. Notice that you need .class at the end. try something like that:

<configuration>
    <includes>
        <include>com/company/package/**/*.class</include>
    </includes>
</configuration>

Base on your example:

           <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>${jacoco.version}</version>
                <executions>
                    <execution>
                    <goals>
                        <goal>instrument</goal>
                        <goal>restore-instrumented-classes</goal>
                        <goal>report</goal>
                    </goals>
                    <configuration>
                        <!-- this configuration affects all goals -->
                        <includes>
                            <include>com/company/packageToInclude/**/*.class</include>                                               
                        </includes>
                    </configuration>
                    </execution>
                </executions>
            </plugin>

Answer 2

I don't know how you generate lib directory, because you don't provide complete example.

However in case of the following example

src/main/java/Example.java

class Example {
}

src/test/java/ExampleTest.java

public class ExampleTest {
    @org.junit.Test
    public void test() {
        new Example();
    }
}

and pom.xml

<?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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>example</artifactId>
  <version>0.1-SNAPSHOT</version>

  <properties>
    <jacoco.version>0.8.4</jacoco.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>
    <dependency>
      <groupId>org.jacoco</groupId>
      <artifactId>org.jacoco.agent</artifactId>
      <classifier>runtime</classifier>
      <version>${jacoco.version}</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <executions>
          <execution>
            <phase>test-compile</phase>
            <goals>
              <goal>copy-dependencies</goal>
            </goals>
            <configuration>
              <includeArtifactIds>junit</includeArtifactIds>
              <outputDirectory>${project.build.directory}/classes/lib</outputDirectory>
            </configuration>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.jacoco</groupId>
        <artifactId>jacoco-maven-plugin</artifactId>
        <version>${jacoco.version}</version>
        <executions>
          <execution>
            <goals>
              <goal>instrument</goal>
              <goal>restore-instrumented-classes</goal>
              <goal>report</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <configuration>
          <systemPropertyVariables>
            <jacoco-agent.destfile>target/jacoco.exec</jacoco-agent.destfile>
          </systemPropertyVariables>
        </configuration>
      </plugin>
    </plugins>
  </build>

</project>

execution of mvn clean verify produces

$ ls -R target/classes
target/classes:
Example.class  lib

target/classes/lib:
junit-4.12.jar

and following report

And after addition of following <configuration>

      <plugin>
        <groupId>org.jacoco</groupId>
        <artifactId>jacoco-maven-plugin</artifactId>
        <version>${jacoco.version}</version>
        <executions>
          <execution>
            <goals>
              <goal>instrument</goal>
              <goal>restore-instrumented-classes</goal>
              <goal>report</goal>
            </goals>
            <configuration>
              <excludes>
                <exclude>lib/**</exclude>
              </excludes>
            </configuration>
          </execution>
        </executions>
      </plugin>

execution of the same command mvn clean verify produces following report

If the above doesn't help, then please provide absolutely complete example allowing everybody else to reproduce exactly the same what you do.