// create test jar

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.0.2</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>test-jar</goal>
                        </goals>
                        <configuration>
                            <includes>
                                <include>**/service/test/*</include>
                            </includes>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

// use

        <dependency>
            <groupId>myproject</groupId>
            <artifactId>myproject-commons</artifactId>
            <version>${myproject-commons.version}</version>
            <type>test-jar</type>
            <scope>test</scope>
        </dependency>