From 32674b167bddc0d737c38f84722986b0f228b44b Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 15 Mar 2016 12:53:06 +0000
Subject: * enum.c (enum_inject): Consider redefinition of Fixnum#+.  
 [ruby-dev:49510] [Bug#12178] Reported by usa.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54122 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_enum.rb | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'test')

diff --git a/test/ruby/test_enum.rb b/test/ruby/test_enum.rb
index 6162830b69..3dfbd26929 100644
--- a/test/ruby/test_enum.rb
+++ b/test/ruby/test_enum.rb
@@ -184,6 +184,18 @@ class TestEnumerable < Test::Unit::TestCase
     assert_equal(nil, @empty.inject() {9})
   end
 
+  def test_inject_array_plus
+    assert_separately([], <<-"end;")
+      class Fixnum
+        undef :+
+        def +(x)
+          0
+        end
+      end
+      assert_equal(0, [1,2,3].inject(:+), "[ruby-dev:49510] [Bug#12178]")
+    end;
+  end
+
   def test_partition
     assert_equal([[1, 3, 1], [2, 2]], @obj.partition {|x| x % 2 == 1 })
     cond = ->(x, i) { x % 2 == 1 }
-- 
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