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This prevents the assignment of __class__ in the class body from breaking super. (Although a determined person could do locals()["@__class__"] = 4)
100 lines
2.2 KiB
Python
100 lines
2.2 KiB
Python
"""Unit tests for new super() implementation."""
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import sys
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import unittest
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from test import support
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class A:
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def f(self):
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return 'A'
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@classmethod
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def cm(cls):
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return (cls, 'A')
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class B(A):
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def f(self):
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return super().f() + 'B'
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@classmethod
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def cm(cls):
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return (cls, super().cm(), 'B')
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class C(A):
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def f(self):
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return super().f() + 'C'
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@classmethod
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def cm(cls):
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return (cls, super().cm(), 'C')
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class D(C, B):
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def f(self):
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return super().f() + 'D'
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def cm(cls):
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return (cls, super().cm(), 'D')
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class E(D):
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pass
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class F(E):
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f = E.f
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class G(A):
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pass
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class TestSuper(unittest.TestCase):
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def test_basics_working(self):
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self.assertEqual(D().f(), 'ABCD')
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def test_class_getattr_working(self):
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self.assertEqual(D.f(D()), 'ABCD')
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def test_subclass_no_override_working(self):
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self.assertEqual(E().f(), 'ABCD')
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self.assertEqual(E.f(E()), 'ABCD')
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def test_unbound_method_transfer_working(self):
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self.assertEqual(F().f(), 'ABCD')
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self.assertEqual(F.f(F()), 'ABCD')
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def test_class_methods_still_working(self):
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self.assertEqual(A.cm(), (A, 'A'))
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self.assertEqual(A().cm(), (A, 'A'))
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self.assertEqual(G.cm(), (G, 'A'))
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self.assertEqual(G().cm(), (G, 'A'))
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def test_super_in_class_methods_working(self):
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d = D()
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self.assertEqual(d.cm(), (d, (D, (D, (D, 'A'), 'B'), 'C'), 'D'))
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e = E()
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self.assertEqual(e.cm(), (e, (E, (E, (E, 'A'), 'B'), 'C'), 'D'))
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def test_super_with_closure(self):
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# Issue4360: super() did not work in a function that
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# contains a closure
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class E(A):
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def f(self):
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def nested():
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self
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return super().f() + 'E'
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self.assertEqual(E().f(), 'AE')
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def test___class___set(self):
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# See issue #12370
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class X(A):
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def f(self):
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return super().f()
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__class__ = 413
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x = X()
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self.assertEqual(x.f(), 'A')
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self.assertEqual(x.__class__, 413)
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def test_main():
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support.run_unittest(TestSuper)
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if __name__ == "__main__":
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unittest.main()
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