array.diff

diff --git a/core/array/equal_value_spec.rb b/core/array/equal_value_spec.rb
index c579146..069d2ef 100644
--- a/core/array/equal_value_spec.rb
+++ b/core/array/equal_value_spec.rb
@@ -5,6 +5,13 @@ require File.dirname(__FILE__) + '/shared/eql'
 describe "Array#==" do
   it_behaves_like :array_eql, :==

+  it 'compares with an equivalent Array-like object using #to_ary' do
+    obj = mock('array-like')
+    obj.should_receive(:respond_to?).with(:to_ary).and_return(true)
+    obj.should_receive(:==).with([1]).and_return(true)
+    ([[1]] == [obj]).should be_true
+  end
+
   it "returns false if any corresponding elements are not #==" do
     a = ["a", "b", "c"]
     b = ["a", "b", "not equal value"]

out.txt

D:\work\jruby-dev\rubyspec.git>jruby -S mspec core\array\equal_value_spec.rb core\array | more
jruby 1.5.0.dev (ruby 1.8.7 patchlevel 174) (2010-01-20 85ee044) (Java HotSpot(TM) Client VM 1.6.0_18) [x86-java]
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE.EEEEE.EEEEE.EEEEE

1)
An exception occurred during: Mock.cleanup
Array#== compares with an equivalent Array-like object using #to_ary ERROR
NoMethodError: undefined method `__mspec_27253707_respond_to?__' for #<MockObject:0x19fdbcb>
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:5
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:55:in `load'
D:/work/jruby-dev/mspec.git/bin/mspec-run:8

2)
An exception occurred during: Mock.cleanup
Array#== returns false if any corresponding elements are not #== ERROR
NoMethodError: undefined method `__mspec_27253707_respond_to?__' for #<MockObject:0x19fdbcb>
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:5
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:55:in `load'
D:/work/jruby-dev/mspec.git/bin/mspec-run:8

3)
An exception occurred during: Mock.cleanup
Array#== returns true if corresponding elements are #== ERROR
NoMethodError: undefined method `__mspec_27253707_respond_to?__' for #<MockObject:0x19fdbcb>
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:5
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:55:in `load'
D:/work/jruby-dev/mspec.git/bin/mspec-run:8

4)
An exception occurred during: Mock.cleanup
Array#== returns false for [NaN] == [NaN] ERROR
NoMethodError: undefined method `__mspec_27253707_respond_to?__' for #<MockObject:0x19fdbcb>
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:5
D:/work/jruby-dev/rubyspec.git/core/array/equal_value_spec.rb:55:in `load'
D:/work/jruby-dev/mspec.git/bin/mspec-run:8