Groovyc error in Grails project

I've got a project that builds and run fine from the console, both grails run-app and grails test-app compile and run correctly.

In Idea 12 and 13 (130.1619) the file UrlMappingsSpec I get this error:

Groovyc: Only classes and closures can be used for attribute 'value' in @grails.test.mixin.TestFor

This shows up as a red line and means that I can't build and run tests in idea.

This happens in my full project, attached is a small sample project with the same problem.

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*Imported from [IDEA-112774](https://youtrack.jetbrains.com/issue/IDEA-112774) · Type: Bug · Votes: 0*
*Comments, attachments, dates and reporter are not part of the export — follow the link above for the full history.*

Start by importing the attached sample project into IDEA 12 or 13 and compare the IDE compiler output for UrlMappingsSpec with grails run-app and grails test-app. Done means the IDE can build and run the tests without the Groovyc/TestFor error while the console commands continue to work.

Written by the indexing model from the issue text.