Clover-for-Maven 2 and 3 Quick Start Guide

To get started with Clover-for-Maven, carry out the following steps.

Add com.atlassian.maven.plugins in .m2/settings.xml

Before you get started, add this to your .m2/settings.xml file so you can reference Clover by its short name clover.



Run Clover goals from a command line

The quickest and easiest way to try Clover is from the command line:

mvn clean clover:setup test clover:aggregate clover:clover


  • clean - to ensure that all sources will be recompiled (Clover uses source-code instrumentation)
  • clover:setup - to initialize Clover and instrument sources
  • test - to compile code, run tests and record code coverage
  • clover:aggregate - to merge coverage data from a multi-module project
  • clover:clover - to generate HTML report for a project

You can find a report in target/site/clover directory.

Further reading

For more instructions, see the Clover-for-Maven 2 and 3 User's Guide.

For documentation presented in the standard Maven format, see the Maven Site Docs.


No coverage data?

Clover uses source code instrumentation, which means that source files must be recompiled with the 'clover:setup' goal. Ensure that you're building your project from scratch (call 'mvn clean' or do the fresh checkout). Otherwise Maven may find your old, non-instrumented classes from a previous build and do not compile sources.

No coverage data?

In case you run in-container tests (e.g. using maven-cargo-plugin) or spawn new JVM processes or run tests of an application running on a remote server, you may need to add Clover's runtime JAR (com.atlassian.clover:clover) to a class path. See NoClassDefFoundError and Using Clover for web applications.

Out of memory?

Please keep in mind that Clover adds extra instructions to your classes measuring code coverage. Thus, increasing PermGen size may be necessary. See OutOfMemoryError: PermGen space.

Last modified on Jul 14, 2016

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