Unable to resolve groovy.text.XmlTemplateEngine - maven

Question

Trying to use groovy.text.XmlTemplateEngine in the Groovy based unit tests of my Maven based project with gmaven plugin configured as following
<plugin>
<groupId>org.codehaus.gmaven</groupId>
<artifactId>gmaven-plugin</artifactId>
<version>1.5-jenkins-3</version>
<dependencies>
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.4.12</version>
</dependency>
</dependencies>
</plugin>
My command line build mvn clean install fails not being able to compile my simple Groovy unit test file with an error message
[ERROR]
file:/Users/../my-service/src/test/groovy/myapp/MyApplicationTest.groovy:
84: unable to resolve class groovy.text.XmlTemplateEngine [ERROR] #
line 84, column 30. [ERROR] XmlTemplateEngine engine = new
groovy.text.XmlTemplateEngine() [ERROR] ^
And in the file I'm only doing a simple command
import groovy.text.XmlTemplateEngine
...
XmlTemplateEngine engine = new groovy.text.XmlTemplateEngine()
Both lines fail with the same error message.
The version of Groovy installed in my OSX command line is 2.4.12.

Answer 1

I have analyzed the output of the
mvn -e -X test
command and didn't find the groovy-all.jar on the classpath during the test compilation phase. Only groovy.jar was present and it doesn't contain groovy.text.XmlTemplateEngine class.
So, I added an additional test dependency:
<dependency>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
<version>2.4.12</version>
<scope>test</scope>
</dependency>
And it compiles my tests well now.