cython

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PYTHON setup.py build_ext --inplace
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PYTHON -c "import runner"
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######## setup.py ########
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from Cython.Build.Dependencies import cythonize
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from distutils.core import setup
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setup(ext_modules=cythonize("*.pyx"))
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######## notheaptype.pyx ########
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cdef class Base:
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    pass
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Obj = type(object())
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cdef class Foo(Base, Obj):
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    pass
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######## wrongbase.pyx ########
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cdef class Base:
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    pass
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Str = type("")
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cdef class X(Base, Str):
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    pass
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######## badmro.pyx ########
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class Py(object):
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    pass
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cdef class X(object, Py):
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    pass
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######## nodict.pyx ########
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cdef class Base:
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    pass
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class Py(object):
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    pass
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cdef class X(Base, Py):
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    pass
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######## oldstyle.pyx ########
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# cython: language_level=2
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cdef class Base:
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    cdef dict __dict__
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class OldStyle:
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    pass
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cdef class Foo(Base, OldStyle):
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    pass
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######## runner.py ########
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import sys
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try:
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    import notheaptype
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    assert False, "notheaptype"
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except TypeError as msg:
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    assert str(msg) == "base class 'object' is not a heap type"
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try:
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    import wrongbase
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    assert False, "wrongbase"
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except TypeError as msg:
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    assert str(msg) == "best base 'str' must be equal to first base 'wrongbase.Base'"
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try:
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    import badmro
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    assert False, "badmro"
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except TypeError as msg:
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    assert str(msg).startswith("Cannot create a consistent method resolution")
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try:
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    import nodict
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    assert False, "nodict"
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except TypeError as msg:
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    assert str(msg) == "extension type 'nodict.X' has no __dict__ slot, but base type 'Py' has: either add 'cdef dict __dict__' to the extension type or add '__slots__ = [...]' to the base type"
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# old-style classes are regular classes in Py3, so this should just work:
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import oldstyle
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