* hash.c: Support for enumerators created by Hash:

      delete_if, reject!, ...
  [Feature #6636]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37511 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 0 deletions

diff --git a/test/ruby/test_enumerator.rb b/test/ruby/test_enumerator.rb
index 66d5e28a14..af41341227 100644
--- a/test/ruby/test_enumerator.rb
+++ b/test/ruby/test_enumerator.rb
@@ -443,6 +443,13 @@ class TestEnumerator < Test::Unit::TestCase
     assert_equal 42, @sized.each_with_object(nil).size
   end
 
+  def test_size_for_enum_created_from_hash
+    h = {a: 1, b: 2, c: 3}
+    %i[delete_if reject! select select! keep_if each each_key each_pair].each do |method|
+      assert_equal 3, h.send(method).size
+    end
+  end
+
   def check_consistency_for_combinatorics(method)
     [ [], [:a, :b, :c, :d, :e] ].product([-2, 0, 2, 5, 6]) do |array, arg|
       assert_equal array.send(method, arg).to_a.size, array.send(method, arg).size,