From a97a455c031c77f01eaae85ce683e9c1346eb8c9 Mon Sep 17 00:00:00 2001
From: KOBAYASHI Shuji <shuujii@gmail.com>
Date: Mon, 27 May 2019 20:51:47 +0900
Subject: Use `$undefined.equal?(obj2)` instead of `obj2 == $undefined` in
 `assert.rb`

In case `obj2.==` is broken.
---
 test/assert.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/assert.rb b/test/assert.rb
index a9bbc9a05..5e2e104b3 100644
--- a/test/assert.rb
+++ b/test/assert.rb
@@ -149,7 +149,7 @@ end
 def assert_operator(*args); _assert_operator(true, *args) end
 def assert_not_operator(*args); _assert_operator(false, *args) end
 def _assert_operator(affirmed, obj1, op, obj2 = $undefined, msg = nil)
-  return _assert_predicate(affirmed, obj1, op, msg) if obj2 == $undefined
+  return _assert_predicate(affirmed, obj1, op, msg) if $undefined.equal?(obj2)
   unless ret = obj1.__send__(op, obj2) == affirmed
     diff = "    Expected #{obj1.inspect} to #{'not ' unless affirmed}be #{op} #{obj2.inspect}."
   end
-- 
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