[GROOVY-4064] Inner Enums do not work with standard Java Enum.valueOf()

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Duplicate
• Component/s: Compiler
• Environment: Mac OSx
• Assignee: Roshan Dawrani
• Reporter: Peter Rietzler
• Created: 17/Feb/10 02:54
• Updated: 07/Apr/10 23:49
• Resolved: 17/Feb/10 08:40

Description

The following test fails:

smarter.ecommerce.smeco.support.smecoscript.services

import org.junit.Test;

class InnerEnumTest {

	enum TestEnum {
		A, B
	}
	
	@Test
	void useEnumValueOf() {
		assert TestEnum.A == Enum.valueOf(TestEnum, "A")
	}
	
}

java.lang.IllegalArgumentException: smarter.ecommerce.smeco.support.smecoscript.services.InnerEnumTest$TestEnum is not an enum type
	at java.lang.Class.enumConstantDirectory(Class.java:2965)
	at java.lang.Enum.valueOf(Enum.java:191)
	at java_lang_Enum$valueOf.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:117)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:129)
	at smarter.ecommerce.smeco.support.smecoscript.services.InnerEnumTest.useEnumValueOf(InnerEnumTest.groovy:13)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

The problem lies in Class.getEnumConstantsShared(). Java expects each enumeration to implement a method values() -> In this case the method seems to be inaccessible (IllegalAccessException is caught and null returned which later leads to the IllegalArgumentException)

Issue Links

• duplicates: GROOVY-3979 Enum inside a class