You have to download the latest version of ejb3unit. Please refer here to download.
There are to different kinds of versions:
Please refer to the Project Dependencies for exact list and version numbers.
If you are using Maven 2 to build your application maven will manage all your download for you.
<dependencies>
...
<dependency>
<groupId>com.bm</groupId>
<artifactId>ejb3unit</artifactId>
<scope>test</scope>
</dependency>
...
</dependencies><profiles>
<profile>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<repositories>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>ejb3unit</id>
<name>ejb3unit repository</name>
<url>http://ejb3unit.sourceforge.net/maven2</url>
</repository>
</repositories>
</profile>
</profiles>