When an Eclipse user uses the Maven goal eclipse:eclipse to generate the Eclipse .project and .classpath files, liquibase-core/src/test/groovy is not registered as a source directory causing the following problems:
1. It is very easy to overlook the Groovy-based tests.
2. Groovy-based tests are not able to be run as easily Java-based JUnit tests.
3. It is possible to inadvertently create a Java-based JUnit test with the same name as a Groovy-based test.