antrunでjunitタスクを使う

maven の antrun で junitタスクを使ったはいいが、junitへのクラスパスが通ってませんよというエラーが出たときの対処法。

http://www.mail-archive.com/users@maven.apache.org/msg51862.html

結局、dependencyにant-junitというのを追加して、で再定義という流れ。んなもんわかるかーーー！

ちなみにから他antスクリプト読んだときにもjunitでエラーがでます。
そっちはどうやって解決するんだ･･･？

ちなみに普通にjunitだけ指定したときのエラー内容はこちら

Embedded error: Could not create task or type of type: junit.

Ant could not find the task or a class this task relies upon.

This is common and has a number of causes; the usual 
solutions are to read the manual pages then download and
install needed JAR files, or fix the build file: 
 - You have misspelt 'junit'.
   Fix: check your spelling.
 - The task needs an external JAR file to execute
     and this is not found at the right place in the classpath.
   Fix: check the documentation for dependencies.
   Fix: declare the task.
 - The task is an Ant optional task and the JAR file and/or libraries
     implementing the functionality were not found at the time you
     yourself built your installation of Ant from the Ant sources.
   Fix: Look in the ANT_HOME/lib for the 'ant-' JAR corresponding to the
     task and make sure it contains more than merely a META-INF/MANIFEST.MF.
     If all it contains is the manifest, then rebuild Ant with the needed
     libraries present in ${ant.home}/lib/optional/ , or alternatively,
     download a pre-built release version from apache.org
 - The build file was written for a later version of Ant
   Fix: upgrade to at least the latest release version of Ant
 - The task is not an Ant core or optional task 
     and needs to be declared using <taskdef>.
 - You are attempting to use a task defined using 
    <presetdef> or <macrodef> but have spelt wrong or not 
   defined it at the point of use

Remember that for JAR files to be visible to Ant tasks implemented
in ANT_HOME/lib, the files must be in the same directory or on the
classpath