import sys

# collections.abc requires Python 3.3+

from python_abstractbase import *
if sys.version_info[0:2] >= (3, 3):
    import collections.abc
else:
    import collections

# This is expected to fail with -builtin option
# Builtin types can't inherit from pure-python abstract bases
if is_python_builtin():
    exit(0)

def check_issubclass(derived, base):
    if not issubclass(derived, base):
        raise RuntimeError("{} is not a subclass of {}".format(derived, base))

if sys.version_info[0:2] >= (3, 3):
    check_issubclass(Mapii, collections.abc.MutableMapping)
    check_issubclass(Multimapii, collections.abc.MutableMapping)
    check_issubclass(IntSet, collections.abc.MutableSet)
    check_issubclass(IntMultiset, collections.abc.MutableSet)
    check_issubclass(IntVector, collections.abc.MutableSequence)
    check_issubclass(IntList, collections.abc.MutableSequence)
else:
    check_issubclass(Mapii, collections.MutableMapping)
    check_issubclass(Multimapii, collections.MutableMapping)
    check_issubclass(IntSet, collections.MutableSet)
    check_issubclass(IntMultiset, collections.MutableSet)
    check_issubclass(IntVector, collections.MutableSequence)
    check_issubclass(IntList, collections.MutableSequence)

mapii = Mapii()
multimapii = Multimapii()
intset = IntSet()
intmultiset = IntMultiset()
intvector = IntVector()
intlist = IntList()