From 7724ddd496c4cfb452edd59ff9bb9cd3d262c2b8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20K=C3=B6gl?= <stefan@skoegl.net>
Date: Mon, 2 Apr 2018 17:09:18 +0200
Subject: [PATCH] Improve hypothesis test error message

---
 tests.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests.py b/tests.py
index e1b4300..6a00bd0 100755
--- a/tests.py
+++ b/tests.py
@@ -639,7 +639,9 @@ def test_roundtrip(self, src, dst):
             patch = jsonpatch.JsonPatch.from_diff(src, dst, False)
             hypothesis.note('Patch: %s' % (patch,))
             res = patch.apply(src)
-            self.assertEqual(res, dst)
+            message = '{src} + {patch} resulted in {res}; {dst} was expected'.format(
+                src=repr(src), patch=repr(patch), res=repr(res), dst=repr(dst))
+            self.assertEqual(res, dst, message)
 
 
 if __name__ == '__main__':