The following piece of code is taken from the 'test:test' goal. It processes the 'maven.junit.jvmargs' property and copies each token to the command line for the junit task. This includes -classpath and -cp tokens and their associated search paths.

  <u:tokenize var="listOfJvmArgs" delim=" ">${maven.junit.jvmargs}</u:tokenize>
  <j:forEach var="somejvmarg" items="${listOfJvmArgs}">
    <jvmarg value="${somejvmarg}"/>
  </j:forEach>

In the next piece of code I have changed the block above to recognise classpath tokens and include their associated search paths in the classpath for the junit task.

  <j:forEach var="somejvmarg" items="${listOfJvmArgs}">
    <j:choose>
      <j:when test="${somejvmarg == '-classpath' or somejvmarg == '-cp'}">
        <!-- omit and -classpath and -cp tokens -->
      </j:when>
      <j:when test="${!somejvmarg.startsWith('-')}">
        <!-- all JVM paramters tokens start with '-' except the classpath/cp search path -->
        <classpath>
          <pathelement location="${somejvmarg}"/>
        </classpath>
      </j:when>
      <j:otherwise>
        <!-- Otherwise the token is a non-classpath JVM token -->
        <jvmarg value="${somejvmarg}"/>
      </j:otherwise>
    </j:choose>
  </j:forEach>