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-rw-r--r--Lib/test/test_class.py34
1 files changed, 34 insertions, 0 deletions
diff --git a/Lib/test/test_class.py b/Lib/test/test_class.py
index 601b8b4..d872357 100644
--- a/Lib/test/test_class.py
+++ b/Lib/test/test_class.py
@@ -363,3 +363,37 @@ except AttributeError, x:
pass
else:
print "attribute error for I.__init__ got masked"
+
+
+# Test comparison and hash of methods
+class A:
+ def __init__(self, x):
+ self.x = x
+ def f(self):
+ pass
+ def g(self):
+ pass
+ def __eq__(self, other):
+ return self.x == other.x
+ def __hash__(self):
+ return self.x
+class B(A):
+ pass
+
+a1 = A(1)
+a2 = A(2)
+assert a1.f == a1.f
+assert a1.f != a2.f
+assert a1.f != a1.g
+assert a1.f == A(1).f
+assert hash(a1.f) == hash(a1.f)
+assert hash(a1.f) == hash(A(1).f)
+
+assert A.f != a1.f
+assert A.f != A.g
+assert B.f == A.f
+assert hash(B.f) == hash(A.f)
+
+# the following triggers a SystemError in 2.4
+a = A(hash(A.f.im_func)^(-1))
+hash(a.f)