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Message Cowboy - Code Coverage Reports with Cobertura and Coveralls

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Message Cowboy - Code Coverage Reports with Cobertura and Coveralls

· DevOps Zone
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Learn more about how CareerBuilder was able to resolve customer issues 5x faster by using Scalyr, the fastest log management tool on the market. 

After having spent some time trying to migrate my Message Coboy project from Maven to Gradle, I finally gave up. I guess Gradle is not for me and I do not see any significant gains in moving from Maven to Gradle, neither as far as my sparetime projects are concerned nor in the organization where I work.

The reason for me wanting to migrate to Gradle was not really Gradle in itself, but the cool badges with code coverage, download latest release etc that I saw on the Mockito project.
Fortunately there is a very nice Coveralls Maven plug-in with excellent documentation which I can recommend.

So what were the required modifications?
First I added the Cobertura and Coveralls plug-ins to the <build> section of my pom.xml:

            <!-- Generates code coverage report. -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>cobertura-maven-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <format>xml</format>
                    <maxmem>256m</maxmem>
                </configuration>
            </plugin>
            <!-- Submit code coverage report to Coveralls.io. -->
            <plugin>
                <groupId>org.eluder.coveralls</groupId>
                <artifactId>coveralls-maven-plugin</artifactId>
                <version>3.0.1</version>
                <configuration>
                    <!-- Since I use Travis CI I do not have to put my Coveralls token here. -->
                </configuration>
            </plugin>
        </plugins>
    </build>

Second I added two lines in the .travis.yml file. The new version of the file looks like this:

language: java
jdk:
- oraclejdk7

after_success:
  - mvn clean cobertura:cobertura coveralls:report

Finally I signed up for Coveralls, which is free for all open-soruce projects, and copy-pasted the markup that displays the code coverage badge to the Message Cowboy ReadMe.md file.

Many thanks to the developer of the Coveralls Maven plug-in and to the generous folks at Coveralls!


Find out more about how Scalyr built a proprietary database that does not use text indexing for their log management tool.

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Published at DZone with permission of Ivan K. See the original article here.

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