Symptoms

When integrating Clover into a build, for example:

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

the build fails with an error like this:

[ERROR] Could not find goal 'setup' in plugin org.apache.maven.plugins:maven-clover-plugin:2.4 among available goals aggregate, check, instrumentInternal, instrument, log, clover, save-history -> [Help 1]
org.apache.maven.plugin.MojoNotFoundException: Could not find goal 'setup' in plugin org.apache.maven.plugins:maven-clover-plugin:2.4 among available goals aggregate, check, instrumentInternal, instrument, log, clover, save-history

Cause

1) The maven-clover2-plugin is declared in pom, but goals called from a command line have the 'clover' prefix.

or

2) Neither the clover-maven-plugin is declared in pom.xml nor the <pluginGroup>com.atlassian.maven.plugins</pluginGroup> in .m2/settings.xml and you use goals prefixed with 'clover' from a command line.

Resolution

Clover plugin for Maven has been renamed in Clover 4.1. Therefore: 

• for Clover 3.x.x and Clover 4.0.x the plugin is named com.atlassian.maven.plugins:maven-clover2-plugin and thus goals have the clover2 prefix
• since Clover 4.1.1 the plugin is named com.atlassian.maven.plugins:clover-maven-plugin and thus goals have the clover prefix

1) Declare the com.atlassian.maven.plugins pluginGroup in .m2/settings.xml to ensure that Maven will not try to resolve 'clover' goals to a very old Clover 2.4 (org.apache.maven.plugins:maven-clover-plugin).

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
          http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <pluginGroups>
        <pluginGroup>com.atlassian.maven.plugins</pluginGroup>
    </pluginGroups>
    ...
</settings>

2) Upgrade to Clover 4.1.1 or newer and use goals with the 'clover' prefix (e.g. 'mvn clean clover:setup test clover:clover').

<plugin>
    <groupId>com.atlassian.maven.plugins</groupId>
    <artifactId>clover-maven-plugin</artifactId>
    <version>4.1.1</version>
</plugin>

3) In case you must stay with Clover older than 4.1.1, use goals with the 'clover2' prefix (e.g. 'mvn clean clover2:setup test clover2:clover').

<plugin>
    <groupId>com.atlassian.maven.plugins</groupId>
    <artifactId>maven-clover2-plugin</artifactId>
    <version>4.0.6</version>
</plugin>