I'm migrating from Netbeans to setup all of my compiling, packaging
and testing. However, I'm having troubles getting the testing part
working. Here's the snippet of code I'm currently using:

   <property name="src"             value="src"/>
   <property name="lib"             value="lib"/>
   <property name="build"           value="build"/>
   <property name="dist"            value="dist"/>
   <property name="dist-lib"        value="${dist}/lib"/>
   <property name="src.lib.runtime" value="${lib}/runtime"/>
   <property name="classes"         value="${build}/classes/"/>
   <property name="jar.executable"  value="${dist}/$
{ant.project.name}.jar"/>
   <property name="test.src"        value="test"/>
   <property name="test.execute"    value="${build}/test"/>
   <property name="test.reports"    value="${test.execute}/reports"/>

   <!-- Runs the JUnit Tests -->
   <target name="test">
       <mkdir dir="${test.reports}"/>
       <copy todir="${test.execute}">
           <fileset dir="${src}"/>
       </copy>
       <copy todir="${test.execute}">
           <fileset dir="${test.src}"/>
       </copy>
       <javac srcdir="${test.execute}"
       classpath="${classpath}"
       debug="true"
       source="1.5"
       />
       <junit dir="${test.execute}">
           <test name="tciworks.analysis.BayesianTest"/>
       </junit>
       <!--junit printsummary="yes">
           <formatter type="plain"/>
           <batchtest fork="yes" todir="${test.reports}">
               <fileset dir="${test.execute}}">
                   <include name="**/*Test*.java"/>
               </fileset>
           </batchtest>
       </junit-->
   </target>

Code being tested is in ${src}
Test cases are in ${test.src}.
All of the source is copied to ${test.execute} and compiled there.

When I try to test I get the following (trimmed) error:

Apache Ant version 1.7.0 compiled on December 13 2006
Buildfile: build.xml
Detected Java version: 1.5 in: c:\Program Files\Java\jdk1.5.0_06\jre
Detected OS: Windows XP
[antlib:org.apache.tools.ant] Could not load definitions from resource
org/apache/tools/ant/antlib.xml. It could not be found.
[snip]
test:
   [mkdir] Skipping c:\TCIWorks\TCIWorksApplication\build\test
\reports because it already exists.
    [copy] tciworks\TCIWorks.java omitted as c:\TCIWorks
\TCIWorksApplication\build\test\tciworks\TCIWorks.java is up to date.
    [copy] tciworks\UpdateManager.java omitted as c:\TCIWorks
\TCIWorksApplication\build\test\tciworks\UpdateManager.java is up to
date.
    [copy] tciworks\analysis\AbstractObjective.java omitted as c:
\TCIWorks\TCIWorksApplication\build\test\tciworks\analysis
\AbstractObjective.java is up to date.
[snip]
   [javac] tciworks\util\TCIFigures.java omitted as c:\TCIWorks
\TCIWorksApplication\build\test\tciworks\util\TCIFigures.class is up
to date.
   [javac] tciworks\util\TCISwingWorker.class skipped - don't know
how to handle it
   [javac] tciworks\util\TCISwingWorker.java omitted as c:\TCIWorks
\TCIWorksApplication\build\test\tciworks\util\TCISwingWorker.class is
up to date.
   [javac] tciworks\util\TCIWorksConstants.class skipped - don't know
how to handle it
   [javac] tciworks\util\TCIWorksConstants.java omitted as c:\TCIWorks
\TCIWorksApplication\build\test\tciworks\util\TCIWorksConstants.class
is up to date.

BUILD FAILED
c:\TCIWorks\TCIWorksApplication\build.xml:134:
java.lang.NullPointerException
    at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:
115)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.Target.execute(Target.java:357)
    at org.apache.tools.ant.Target.performTasks(Target.java:385)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:
1329)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
    at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:
41)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
    at org.apache.tools.ant.Main.runBuild(Main.java:698)
    at org.apache.tools.ant.Main.startAnt(Main.java:199)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
Caused by: java.lang.NullPointerException
    at org.apache.tools.ant.types.Path.add(Path.java:261)
    at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:
753)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:
288)
    at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:
105)
    ... 11 more
--- Nested Exception ---
java.lang.NullPointerException
    at org.apache.tools.ant.types.Path.add(Path.java:261)
    at
org.apache.tools.ant.taskdefs.optional.junit.JUnitTask.execute(JUnitTask.java:
753)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:
288)