cython

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cdef extern from *:
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    """
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    #ifdef CYTHON_USE_TYPE_SPECS
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    #define TYPESPECS 1
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    #else
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    #define TYPESPECS 0
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    #endif
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    """
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    int TYPESPECS
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cdef class Foo:
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    """
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    >>> D = Foo.__dict__
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    >>> D["meth"] is D["meth2"]
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    True
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    >>> D["classmeth"] is D["classmeth2"]
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    True
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    >>> D["staticmeth"] is D["staticmeth2"]
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    True
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    """
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    def meth(self): pass
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    @classmethod
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    def classmeth(cls): pass
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    @staticmethod
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    def staticmeth(): pass
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    meth2 = meth
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    classmeth2 = classmeth
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    staticmeth2 = staticmeth
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cdef class ChangeName:
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    # the class seems to need some contents for changing the
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    # name to cause a problem
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    cdef public str attr1
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    cdef public int attr2
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if TYPESPECS:
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    __doc__ = """
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    For typespecs, cdef classes are mutable on some Python versions
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    (and it's easiest to leave them that way). Therefore the test
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    is just that reassigning the name doesn't cause a crash
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    >>> try:
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    ...     ChangeName.__name__ = "SomethingElse"
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    ... except TypeError:
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    ...     pass  # either type error or changing the name is fine
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    """
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else:
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    __doc__ = """
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    GH-5079
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    Assigning to the cdef class name shouldn't cause a crash.
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    The important bit of this test is the not crashing - it's
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    possible that typespec/limited-API defined classes will be
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    naturally mutable and that isn't a huge problem
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    >>> ChangeName.__name__ = "SomethingElse"  # doctest: +ELLIPSIS
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    Traceback (most recent call last):
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        ...
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    TypeError: ...
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    >>> ChangeName.__name__
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    'ChangeName'
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    """
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