2 files changed, 14 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb
index 8cee9ecdc4..1c312f2587 100644
--- a/actionpack/lib/action_dispatch/middleware/cookies.rb
+++ b/actionpack/lib/action_dispatch/middleware/cookies.rb
@@ -129,6 +129,11 @@ module ActionDispatch
         @cookies[name.to_s]
       end
 
+      def key?(name)
+        @cookies.key?(name.to_s)
+      end
+      alias :has_key? :key?
+
       def update(other_hash)
         @cookies.update other_hash.stringify_keys
         self
diff --git a/actionpack/test/dispatch/cookies_test.rb b/actionpack/test/dispatch/cookies_test.rb
index 8e5fd97cc6..fb67ecb07d 100644
--- a/actionpack/test/dispatch/cookies_test.rb
+++ b/actionpack/test/dispatch/cookies_test.rb
@@ -148,6 +148,15 @@ class CookiesTest < ActionController::TestCase
     @request.host = "www.nextangle.com"
   end
 
+  def test_key_methods
+    assert !request.cookie_jar.key?(:foo)
+    assert !request.cookie_jar.has_key?("foo")
+
+    request.cookie_jar[:foo] = :bar
+    assert request.cookie_jar.key?(:foo)
+    assert request.cookie_jar.has_key?("foo")
+  end
+
   def test_setting_cookie
     get :authenticate
     assert_cookie_header "user_name=david; path=/"