Missed test for rev. 46933; infinite recursion from __coerce__() returning its arguments reversed.
diff --git a/Lib/test/test_coercion.py b/Lib/test/test_coercion.py
index 4356817..d704e4b 100644
--- a/Lib/test/test_coercion.py
+++ b/Lib/test/test_coercion.py
@@ -2,7 +2,7 @@
import sys
import warnings
import unittest
-from test.test_support import run_unittest
+from test.test_support import run_unittest, TestFailed
# Fake a number that implements numeric methods through __coerce__
class CoerceNumber:
@@ -318,6 +318,24 @@
return 0
self.assertEquals(cmp(ClassicWackyComparer(), evil_coercer), 0)
+ def test_infinite_rec_classic_classes(self):
+ # if __coerce__() returns its arguments reversed it causes an infinite
+ # recursion for classic classes.
+ class Tester:
+ def __coerce__(self, other):
+ return other, self
+
+ exc = TestFailed("__coerce__() returning its arguments reverse "
+ "should raise RuntimeError")
+ try:
+ Tester() + 1
+ except (RuntimeError, TypeError):
+ return
+ except:
+ raise exc
+ else:
+ raise exc
+
def test_main():
warnings.filterwarnings("ignore",
r'complex divmod\(\), // and % are deprecated',