* enumerator.c: Support #size for enumerators created from enumerators

  [Feature #6636]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_enumerator.rb b/test/ruby/test_enumerator.rb
index 8efc812fc5..3143be21a0 100644
--- a/test/ruby/test_enumerator.rb
+++ b/test/ruby/test_enumerator.rb
@@ -414,5 +414,11 @@ class TestEnumerator < Test::Unit::TestCase
     assert_equal nil, @obj.to_enum(:foo, 0, 1).size
     assert_equal 2, @obj.to_enum(:foo, 0, 1){ 2 }.size
   end
+
+  def test_size_for_enum_created_by_enumerators
+    enum = to_enum{ 42 }
+    assert_equal 42, enum.with_index.size
+    assert_equal 42, enum.with_object(:foo).size
+  end
 end