From a11da59755c27c7a74df90d08f6401b0c96be160 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sun, 11 Apr 2010 01:40:32 +0000
Subject: [PATCH] add test for class with no operations defined

---
 Lib/test/test_functools.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
index 05e19b1399f..6e3533acd2a 100644
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -422,6 +422,12 @@ class TestTotalOrdering(unittest.TestCase):
         self.assert_(A(2) <= A(2))
         self.assert_(A(2) >= A(2))
 
+    def test_no_operations_defined(self):
+        with self.assertRaises(ValueError):
+            @functools.total_ordering
+            class A:
+                pass
+
 def test_main(verbose=None):
     test_classes = (
         TestPartial,