From 1b555e2b7911bc3d8cee811986ec67c88fa36cad Mon Sep 17 00:00:00 2001
From: Michael Merickel <michael@merickel.org>
Date: Sun, 5 Jan 2020 18:57:39 -0600
Subject: add changelog for #3559

---
 CHANGES.rst | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'CHANGES.rst')

diff --git a/CHANGES.rst b/CHANGES.rst
index 383906e00..70ee43b96 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -71,6 +71,13 @@ Features
 - Fix ``DeprecationWarning`` emitted by using the ``imp`` module.
   See https://github.com/Pylons/pyramid/pull/3553
 
+- Properties created via ``config.add_request_method(..., property=True)`` or
+  ``request.set_property`` used to be readonly. They can now be overridden
+  via ``request.foo = ...`` and until the value is deleted it will return
+  the overridden value. This is most useful when mocking request properties
+  in testing.
+  See https://github.com/Pylons/pyramid/pull/3559
+
 Deprecations
 ------------
 
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