[GROOVY-6736] Error adding a trait to a Map

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.3.0-rc-2, 2.3.0
• Fix Version/s: 2.3.1
• Labels: traits
• Assignee: Cédric Champeau
• Reporter: Jorge Franco
• Created: 28/Apr/14 17:11
• Updated: 20/May/14 05:31
• Resolved: 15/May/14 04:22

Description

With this code:

trait Extra {
String extra()

{ "I'm an extra method" }

}

def extraList = [] as Extra
assert extraList.extra() == "I'm an extra method"

def extraMap = [:] as Extra
assert extraMap.extra() == "I'm an extra method"

I get error:
Caught: java.lang.UnsupportedOperationException
java.lang.UnsupportedOperationException
at com.sun.proxy.$Proxy8.extra(Unknown Source)
at Extra$extra$0.call(Unknown Source)
at Runtime.run(Runtime.groovy:9)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)