Make the dot-colon method reference frozen

[Feature #16103]

Close: https://github.com/ruby/ruby/pull/2267

1 files changed, 13 insertions, 0 deletions

diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index 1d59ddb594..d85f9010c7 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -1141,6 +1141,19 @@ class TestMethod < Test::Unit::TestCase
     assert_nil(o.method(:foo))
   end
 
+  def test_method_reference_freeze_state
+    m = 1.:succ
+    assert_predicate(m, :frozen?, "dot-symbol method reference should be frozen")
+    m = 1.method(:succ)
+    assert_not_predicate(m, :frozen?, "#method method reference should not be frozen")
+    o = Object.new
+    def o.foo; 42; end
+    m = o.:foo
+    assert_predicate(m, :frozen?, "dot-symbol method reference should be frozen")
+    m = o.method(:foo)
+    assert_not_predicate(m, :frozen?, "#method method reference should not be frozen")
+  end
+
   def test_umethod_bind_call
     foo = Base.instance_method(:foo)
     assert_equal(:base, foo.bind_call(Base.new))