From 5f9d1952339eb6925e9bb2b10fb4409374cea017 Mon Sep 17 00:00:00 2001
From: Ben Waugh <b.waugh@ucl.ac.uk>
Date: Thu, 11 Apr 2013 09:52:21 +0100
Subject: [PATCH] Example of using @raises to test the raising of an exception.

---
 testing/cheat-sheet.md | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/testing/cheat-sheet.md b/testing/cheat-sheet.md
index 140e098..d7f48a0 100644
--- a/testing/cheat-sheet.md
+++ b/testing/cheat-sheet.md
@@ -86,9 +86,15 @@ the way values are represented and rounded.
 
 ### Testing exceptions
 
-TODO:
+Testing that a method raises the appropriate exception when the input is invalid:
+
+    from nose.tools import raises
+
+    from mystatscode import mean
 
-* using `@raises` decorator
+    @raises(TypeError)
+    def test_not_a_list():
+        observed = mean(1)
 
 ### Fixtures
 
-- 
2.26.2