Can't run Groovy test cases from Ant - ant

Question

My Ant target looks like this:
<target name="junit" depends="compile">
<junit haltonfailure="true" printsummary="true">
<classpath>
<fileset dir="${idea.dir}/lib" includes="junit.jar" />
<fileset dir="${build.dir}" includes="**" />
</classpath>
<formatter type="plain" usefile="true" />
<batchtest fork="false" todir="${out.dir}">
<fileset dir="${build.dir}" includes="test_*/*Test.class" />
</batchtest>
</junit>
</target>
All compiled classes from the project are in ${build.dir}, as well as all compiled test cases. The latter are within ${build.dir}/test_* sub folders.
There is one test class ${build.dir}/test_ecs/EntityManagerTest.class, which apparently is found in batchtest. However, Ant gives me this output in the junit report:
test_ecs.EntityManagerTest
java.lang.ClassNotFoundException: test_ecs.EntityManagerTest
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30)
Now, what I don't understand is: Why is the test case class file found, but then the error says exactly that class is not found?

Answer 1

try modifying the <classpath>.. section like this:
<junit ..>
<classpath>
<pathelement location="${idea.dir}/lib/junit.jar"/>
<pathelement path="${build.dir}"/>
</classpath>
and see if it runs...

Answer 2

I suspect your issue is the classpath declaration:
<classpath>
<fileset dir="${idea.dir}/lib" includes="junit.jar" />
<fileset dir="${build.dir}" includes="**" />
</classpath>
Are your *.class files located in the build directory? Or a subdirectory of the build dir?
By way of example here's my standard junit task:
<junit printsummary="yes" haltonfailure="yes">
<classpath>
<path refid="test.path"/>
<pathelement path="${build.dir}/classes"/>
<pathelement path="${build.dir}/test-classes"/>
</classpath>
<formatter type="xml"/>
<batchtest fork="yes" todir="${build.dir}/test-reports">
<fileset dir="${test.src.dir}">
<include name="**/*Test*.java"/>
<exclude name="**/AllTests.java"/>
</fileset>
</batchtest>
</junit>
Note the classpath declaration. It includes the path to 3rd party dependency jars, the directory where I compiled my classes to and the directory I compiled my test classes to.