From 82bc502cf7bb64236feba6e140d98bb9e555f4ca Mon Sep 17 00:00:00 2001
From: Steve Pulec <spulec@gmail.com>
Date: Wed, 18 Jan 2017 22:46:51 -0500
Subject: [PATCH] Fix assert_raises for catching parents of exceptions.

---
 tests/backport_assert_raises.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/backport_assert_raises.py b/tests/backport_assert_raises.py
index 75f9f342e..6ceacaa89 100644
--- a/tests/backport_assert_raises.py
+++ b/tests/backport_assert_raises.py
@@ -27,6 +27,8 @@ except TypeError:
 
         def __exit__(self, exc_type, exc_val, tb):
             self.exception = exc_val
+            if issubclass(exc_type, self.expected):
+                return True
             nose.tools.assert_equal(exc_type, self.expected)
             # if you get to this line, the last assertion must have passed
             # suppress the propagation of this exception