46 lines
886 B
Python
46 lines
886 B
Python
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# test for type.__bases__ implementation
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if not hasattr(object, '__bases__'):
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print("SKIP")
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raise SystemExit
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class A:
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pass
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class B(object):
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pass
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class C(B):
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pass
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class D(C, A):
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pass
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# Check the attribute exists
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print(hasattr(A, '__bases__'))
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print(hasattr(B, '__bases__'))
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print(hasattr(C, '__bases__'))
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print(hasattr(D, '__bases__'))
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# Check it is always a tuple
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print(type(A.__bases__) == tuple)
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print(type(B.__bases__) == tuple)
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print(type(C.__bases__) == tuple)
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print(type(D.__bases__) == tuple)
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# Check size
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print(len(A.__bases__) == 1)
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print(len(B.__bases__) == 1)
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print(len(C.__bases__) == 1)
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print(len(D.__bases__) == 2)
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# Check values
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print(A.__bases__[0] == object)
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print(B.__bases__[0] == object)
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print(C.__bases__[0] == B)
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print(D.__bases__[0] == C)
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print(D.__bases__[1] == A)
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# Object has an empty tuple
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print(object.__bases__ == tuple())
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