[GROOVY-6836] ClassCastException in map argument constructor when Immutable and CompileStatic are used

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.2
• Fix Version/s: 2.3.5
• Assignee: Cédric Champeau
• Reporter: Lari Hotari
• Created: 29/May/14 03:25
• Updated: 26/Jul/14 01:44
• Resolved: 23/Jul/14 03:54

Description

I'm working on an unit test for Grails and it fails with a ClassCastException.

java.lang.ClassCastException: grails.test.runtime.TestPluginUsage cannot be cast to java.util.Map
	at java.util.HashMap.hash(HashMap.java:366)
	at java.util.HashMap.put(HashMap.java:496)
	at java.util.HashSet.add(HashSet.java:217)
	at java.util.AbstractCollection.addAll(AbstractCollection.java:342)
	at grails.test.runtime.TestRuntimeFactory.getRuntimeForTestClass_closure1(TestRuntimeFactory.groovy:72)
	at groovy.lang.Closure.call(Closure.java:423)
	at groovy.lang.Closure.call(Closure.java:439)
	at grails.test.runtime.TestRuntimeFactory.getRuntimeForTestClass(TestRuntimeFactory.groovy:63)
	at grails.test.runtime.TestRuntimeFactorySpec.should instantiate correct plugins and features for #testClass.simpleName(TestRuntimeFactorySpec.groovy:20)

With a debugger I can see that the object has a reference to a wrong metaclass .

I tried to isolate the problem without success. I'll push the code to a separate branch in Grails so that you can reproduce the problem and connect a debugger to the failing test.