title: mock configuration in Grails tests
body: <p>Prior to Grails 2.0.X it was possible to mock configuration using a <code>mockConfig</code> method provided by the base class that tests extend. However, in Grails 2.0.X it is recommended that test classes use the <code>@TestFor</code> mixin instead of extending a base class.</p>
  
  <p>This mixin doesn't seem to provide anything equivalent to the <code>mockConfig</code> methods, so I can't figure out how to mock values in <code>Config.groovy</code>.</p>