From bcbeb5d008c1e91454b7f2c2d0e1d7b4735006e2 Mon Sep 17 00:00:00 2001
From: marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 24 Jan 2013 06:23:07 +0000
Subject: * enumerator.c: Fix state handling for Lazy#drop_while   [bug #7696]
 [bug #7691]

* test/ruby/test_lazy_enumerator.rb: test for above

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38921 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_lazy_enumerator.rb | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'test/ruby/test_lazy_enumerator.rb')

diff --git a/test/ruby/test_lazy_enumerator.rb b/test/ruby/test_lazy_enumerator.rb
index 35e92c9050..a7c5a4a947 100644
--- a/test/ruby/test_lazy_enumerator.rb
+++ b/test/ruby/test_lazy_enumerator.rb
@@ -250,6 +250,13 @@ class TestLazyEnumerator < Test::Unit::TestCase
     assert_equal([*(1..5)]*5, take5.flat_map{take5}.force, bug7696)
   end
 
+  def test_drop_while_nested
+    bug7696 = '[ruby-core:51470]'
+    a = Step.new(1..10)
+    drop5 = a.lazy.drop_while{|x| x < 6}
+    assert_equal([*(6..10)]*5, drop5.flat_map{drop5}.force, bug7696)
+  end
+
   def test_take_rewound
     bug7696 = '[ruby-core:51470]'
     e=(1..42).lazy.take(2)
-- 
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