From 4bfd4f92ce303a1497ee02f1548f2dab14d32b02 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johannes=20Sch=C3=B6nberger?= <hannesschoenberger@gmail.com>
Date: Tue, 9 Oct 2012 07:53:54 +0200
Subject: [PATCH] Add note about random test failure for some systems

---
 skimage/measure/tests/test_structural_similarity.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/skimage/measure/tests/test_structural_similarity.py b/skimage/measure/tests/test_structural_similarity.py
index d2ddc774..ac45072a 100644
--- a/skimage/measure/tests/test_structural_similarity.py
+++ b/skimage/measure/tests/test_structural_similarity.py
@@ -25,6 +25,7 @@ def test_ssim_image():
     assert(S1 < 0.3)
 
 
+# NOTE: This test is known to randomly fail on some systems (Mac OS X 10.6)
 def test_ssim_grad():
     N = 30
     X = np.random.random((N, N)) * 255