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object.c: Module#singleton_class?

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* object.c (rb_mod_singleton_p): new method Module#singleton_class? to
  return whether the receiver is a singleton class or not.
  [ruby-core:51087] [Feature #7609]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42449 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2013-08-08 14:01:23 +00:00
parent 44aa21d4aa
commit a25d02b144
4 changed files with 23 additions and 0 deletions
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6
test/ruby/test_class.rb
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@ -346,4 +346,10 @@ class TestClass < Test::Unit::TestCase
assert_empty(added.grep(->(k) {c == k[0]}), bug5283)
assert_equal(:foo, d.foo)
end
def test_singleton_class_p
feature7609 = '[ruby-core:51087] [Feature #7609]'
assert_predicate(self.singleton_class, :singleton_class?, feature7609)
assert_not_predicate(self.class, :singleton_class?, feature7609)
end
end