Using objenesis prevents running tests from interactive prompt more than once

Originally reported on Google Code with ID 306

What steps will reproduce the problem? If possible, provide source code and stack trace.

If I include the objenesis dependency in my BuildConfig, my tests run fine when executed
as 'grails test-app' but fail after the first run if I go into interactive mode by
typing 'grails' and then issuing 'test-app' calls. This has happened in two distinct
apps.

The stacktrace is here (I cannot get Grails to give me the entire stacktrace either
using -Dgrails.full.stacktrace=true or specifying grails.full.stacktrace = true in
Config.groovy):

org.spockframework.mock.CannotCreateMockException: Cannot create mock for class grails.plugins.springsecurity.SpringSecurityServicenull
    at org.spockframework.mock.runtime.MockInstantiator.instantiate(MockInstantiator.java:38)
    at org.spockframework.mock.runtime.ProxyBasedMockFactory$CglibMockFactory.createMock(ProxyBasedMockFactory.java:92)
    at org.spockframework.mock.runtime.ProxyBasedMockFactory.create(ProxyBasedMockFactory.java:49)
    at org.spockframework.mock.runtime.JavaMockFactory.create(JavaMockFactory.java:51)
    at org.spockframework.mock.runtime.CompositeMockFactory.create(CompositeMockFactory.java:44)
    at org.spockframework.lang.SpecInternals.createMock(SpecInternals.java:47)
    at org.spockframework.lang.SpecInternals.createMockImpl(SpecInternals.java:282)
    at org.spockframework.lang.SpecInternals.MockImpl(SpecInternals.java:99)
    at com.xxxx.SystemServiceSpec.setup(SystemServiceSpec.groovy:17)
Caused by: java.lang.ClassCastException
    at java.lang.Class.cast(Class.java:2990)
    at org.spockframework.mock.runtime.MockInstantiator$ObjenesisInstantiator.instantiate(MockInstantiator.java:45)
    at org.spockframework.mock.runtime.MockInstantiator.instantiate(MockInstantiator.java:31)
    ... 8 more





What version of Spock and Groovy are you using?

Spock 0.7, Grails 2.2.0 and 2.1.1

Reported by gregap on 2013-03-29 11:45:43

Reproduce the failure by adding objenesis to BuildConfig, entering interactive Grails mode, and issuing repeated test-app calls. Start with org.spockframework.mock.runtime.MockInstantiator.java and the reported SystemServiceSpec setup; done means repeated interactive test runs can create the mock without the ClassCastException.