[GROOVY-4916] Set equality fails if null elements are present

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0
• Fix Version/s: 1.8.1
• Environment: java version "1.6.0_24"; Java(TM) SE Runtime Environment (build 1.6.0_24-b07); Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode); Ubuntu 10.04
• Assignee: Paul King
• Reporter: Ray A. Conner
• Created: 08/Jul/11 12:32
• Updated: 21/Jul/11 19:06
• Resolved: 09/Jul/11 06:29

Description

The following assertions work as expected in groovy 1.7.10, but fail in groovy 1.8.0

First case:

def foo = [ "a", null ] as Set
assert foo.equals( foo )

Second case:

def foo = [ "a", null ] as Set
def bar = [ "a", null ] as Set
assert foo == bar
assert foo.equals( bar )

foo == foo happens to work, which leads me to believe that == tests for object identity first.

I can workaround by testing Set equality using brute force, but it's very surprising.