The integration test classes generated for me by Grails when I created my domain classes do not extend the class GroovyTestCase. However, I have seen it recommended by many authors (here is an example in order to use the shouldFail method, which indeed seems to work).
However, extending my test class from GroovyTestCase has resulted in the following error message when I run test-app in the interactive Grails console:
Spring Loaded: Cannot reload new version of foo.barTests
Reason: Supertype changed from java/lang/Object to groovy/util/GroovyTestCase
Is this something I should be concerned about? I have searched online and cannot find other people complaining about this error, so it might be something new with Grails 2.2. Please advise.
I am running my tests in the grails interactive console (what you get when you run grails without arguments). I’ve left my tests inheriting from Object for a while, but when I run test-app I still occasionally get those messages output to the HTML test report (of the “changed from GroovyTestCase to Object” variety).
I am quite sure it’s a Grails bug related to
As I’ve encountered this strange behaviour as well.
The steps that caused this problem seem to be that a Groovy class is compiled once without transformation, so that it’s a subclass of
java.lang.Object.When the AST transformaton kicks it, the class is recompiled again. This time, it becomes a subclass of another class. Then Spring-loaded fails to re-load them into the memory (as JVM does not allow the same class to redefine its super class).