From 040ca9cf5b7e193f0fb15166135643daa60f9237 Mon Sep 17 00:00:00 2001
From: Kir Shatrov <shatrov@me.com>
Date: Fri, 9 Sep 2016 22:17:10 -0400
Subject: Do not mutate AC::TestRequest::DEFAULT_OPTIONS

---
 actionpack/test/controller/request/test_request_test.rb | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'actionpack/test')

diff --git a/actionpack/test/controller/request/test_request_test.rb b/actionpack/test/controller/request/test_request_test.rb
index 6e0ca957c3..fa049fbc9f 100644
--- a/actionpack/test/controller/request/test_request_test.rb
+++ b/actionpack/test/controller/request/test_request_test.rb
@@ -6,6 +6,11 @@ class ActionController::TestRequestTest < ActionController::TestCase
     assert @request.session_options
   end
 
+  def test_mutating_session_options_does_not_affect_default_options
+    @request.session_options[:myparam] = 123
+    assert_equal nil, ActionController::TestSession::DEFAULT_OPTIONS[:myparam]
+  end
+
   ActionDispatch::Session::AbstractStore::DEFAULT_OPTIONS.each_key do |option|
     test "rack default session options #{option} exists in session options and is default" do
       assert_equal(ActionDispatch::Session::AbstractStore::DEFAULT_OPTIONS[option],
-- 
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