The way tests are detected in Clover2 has been vastly extended.

The <testsources/> fileset now supports the following nested elements to make test case detection more finer grained.
<testclass name="regex" super="regex" annotation="regex">

And testclass has a testmethod element:
<testmethod name="regex" annotation="regex"/>

Here is a contrived example with every attributed and nested element set.

<testSources dir="src">
                <include name="**/*Test.java"/>
                <testclass name=".*Test" super="TestCase" annotation="Test">
                    <testmethod name=".*Bag.*" annotation="Test"/>
                </testclass>
</testSources>