Added tests for cookies with domain option.

actionpack/test/dispatch/cookies_test.rb

@@ -79,6 +79,16 @@ def delete_and_set_cookie
       cookies[:user_name] = { :value => "david", :expires => Time.utc(2005, 10, 10,5) }
       head :ok
     end
+
+    def set_cookie_with_domain
+      cookies[:user_name] = {:value => "rizwanreza", :domain => :all}
+      head :ok
+    end
+
+    def delete_cookie_with_domain
+      cookies.delete(:user_name, :domain => :all)
+      head :ok
+    end
   end
 
   tests TestController
@@ -216,6 +226,18 @@ def test_raises_argument_error_if_secret_is_probably_insecure
     }
   end
 
+  def test_cookie_with_all_domain_option
+    get :set_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=rizwanreza; domain=.nextangle.com; path=/"
+  end
+
+  def test_deleting_cookie_with_all_domain_option
+    get :delete_cookie_with_domain
+    assert_response :success
+    assert_cookie_header "user_name=; domain=.nextangle.com; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT"
+  end
+
   private
     def assert_cookie_header(expected)
       header = @response.headers["Set-Cookie"]