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"""Unit tests for new super() implementation."""
import sys
import unittest
from test import support
class A:
def f(self):
return 'A'
@classmethod
def cm(cls):
return (cls, 'A')
class B(A):
def f(self):
return super().f() + 'B'
@classmethod
def cm(cls):
return (cls, super().cm(), 'B')
class C(A):
def f(self):
return super().f() + 'C'
@classmethod
def cm(cls):
return (cls, super().cm(), 'C')
class D(C, B):
def f(self):
return super().f() + 'D'
def cm(cls):
return (cls, super().cm(), 'D')
class E(D):
pass
class F(E):
f = E.f
class G(A):
pass
class TestSuper(unittest.TestCase):
def testBasicsWorking(self):
self.assertEqual(D().f(), 'ABCD')
def testClassGetattrWorking(self):
self.assertEqual(D.f(D()), 'ABCD')
def testSubclassNoOverrideWorking(self):
self.assertEqual(E().f(), 'ABCD')
self.assertEqual(E.f(E()), 'ABCD')
def testUnboundMethodTransferWorking(self):
self.assertEqual(F().f(), 'ABCD')
self.assertEqual(F.f(F()), 'ABCD')
def testClassMethodsStillWorking(self):
self.assertEqual(A.cm(), (A, 'A'))
self.assertEqual(A().cm(), (A, 'A'))
self.assertEqual(G.cm(), (G, 'A'))
self.assertEqual(G().cm(), (G, 'A'))
def testSuperInClassMethodsWorking(self):
d = D()
self.assertEqual(d.cm(), (d, (D, (D, (D, 'A'), 'B'), 'C'), 'D'))
e = E()
self.assertEqual(e.cm(), (e, (E, (E, (E, 'A'), 'B'), 'C'), 'D'))
def testSuperWithClosure(self):
# Issue4360: super() did not work in a function that
# contains a closure
class E(A):
def f(self):
def nested():
self
return super().f() + 'E'
self.assertEqual(E().f(), 'AE')
def test_main():
support.run_unittest(TestSuper)
if __name__ == "__main__":
unittest.main()
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