Base Test Class with Maven

I've got some base Test classes (with settings for Spring, Wicket, etc) that I want to reuse in my integration tests, and I've put them under a 'test' directory (instead of 'main'), but that means that they don't get built and included in the main artifact. Here's how I forced Maven to build it into a test artifact (in the build/plugins section):

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <executions>
          <execution>
            <goals>
              <goal>test-jar</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

... and here's how I included it as a dependency in the other projects:

    <dependency>
      <groupId>com.max.services</groupId>
      <artifactId>MaxServices</artifactId>
      <version>1.0.2-SNAPSHOT</version>
    </dependency>