`Proc` made by `Symbol#to_proc` should be a lambda [Bug #16260]

With refinements, too.

1 files changed, 7 insertions, 0 deletions

diff --git a/test/ruby/test_symbol.rb b/test/ruby/test_symbol.rb
index 2e9710e4dc..632acb3e3d 100644
--- a/test/ruby/test_symbol.rb
+++ b/test/ruby/test_symbol.rb
@@ -169,6 +169,9 @@ class TestSymbol < Test::Unit::TestCase
   def _test_to_proc_arg_with_refinements_call(&block)
     block.call TestToPRocArgWithRefinements.new
   end
+  def _test_to_proc_with_refinements_call(&block)
+    block
+  end
   using Module.new {
     refine TestToPRocArgWithRefinements do
       def hoge
@@ -180,6 +183,10 @@ class TestSymbol < Test::Unit::TestCase
     assert_equal(:hoge, _test_to_proc_arg_with_refinements_call(&:hoge))
   end
 
+  def test_to_proc_lambda_with_refinements
+    assert_predicate(_test_to_proc_with_refinements_call(&:hoge), :lambda?)
+  end
+
   def self._test_to_proc_arg_with_refinements_call(&block)
     block.call TestToPRocArgWithRefinements.new
   end