Unit test abstract class with injected service

My application has a set of subclasses that all extend a certain base class.

BaseClass.groovy

abstract class Base {

    def beforeInsert() {
        userCreated = springSecurityService.currentUser
    }

    /* other stuff */

}

ConcreteClass.groovy

class Concrete extends Base {

    /* stuff, doesn't matter */

}

And I am writing a test that must instantiate several Concretes:

AsdfServiceSpec.groovy

def "under x circumstances, check for all instances that meet y criteria"() {

  setup: "create 3 concrete classes"
     (1..3).each { new ConcreteClass(a: 'yes').save(validate: false) }

    /* and then the actual test ... */

}

The problem arises when I save the instances, because of that springSecurityService up in BaseClass. I can't find a way to stub it out for the unit test!

• I can't @Mock an abstract class, which is needed to use defineBeans.


• Base.springSecurityService raises an NPE.


• Base.metaClass.springSecurityService and Base.metaClass.static.springSecurityService compile but don't work.


• And apparently you can't override events in Grails, so I can't just bypass the beforeInsert, which would otherwise be fine.

Anybody know how to unit test an abstract class with an injected service?