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import sys
from . import CPyExtTestCase, CPyExtFunction, CPyExtFunctionOutVars, unhandled_error_compare, GRAALPYTHON
__dir__ = __file__.rpartition("/")[0]


def raise_Py6_SystemError():
    if sys.version_info.minor >= 6:
        raise SystemError
    else:
        return -1
    

def _reference_contains(args):
    if not (isinstance(args[0], set) or isinstance(args[0], frozenset)):
        raise SystemError
    try:
        return args[1] in args[0]
    except TypeError:
        return raise_Py6_SystemError()


def _reference_clear(args):
    args[0].clear()
    return args[0]


class FrozenSetSubclass(frozenset):
    pass


class SetSubclass(set):
    pass


default_typecheck_args = lambda: (
            (set(),),
            (set([1, 2, 3]),),
            (set({'a', 'b'}),),
            (set([None]),),
            (frozenset(),),
            (frozenset([1, 2, 3]),),
            (frozenset({'a', 'b'}),),
            (frozenset([None]),),
            (FrozenSetSubclass(),),
            (SetSubclass([None]),),
            ({'a': "hello", 'b': "world"},),
            ('a',),
            (1,),
            (None,),
        )


class TestPySet(CPyExtTestCase):

    def compile_module(self, name):
        type(self).mro()[1].__dict__["test_%s" % name].create_module(name)
        super(TestPySet, self).compile_module(name)

    test_PySet_New = CPyExtFunction(
        lambda args: set(args[0]),
        lambda: (
            ([1, 2, 3],),
            ({'a': "hello", 'b': "world"},),
            ({'a', 'b'},),
            ('a',),
            (1,),
        ),
        resultspec="O",
        argspec='O',
        arguments=["PyObject* iterable"],
        cmpfunc=unhandled_error_compare
    )

    test_PyFrozenSet_New = CPyExtFunction(
        lambda args: frozenset(args[0]),
        lambda: (
            ([1, 2, 3],),
            ({'a': "hello", 'b': "world"},),
            ({'a', 'b'},),
            ('a',),
            (1,),
        ),
        resultspec="O",
        argspec='O',
        arguments=["PyObject* iterable"],
        cmpfunc=unhandled_error_compare
    )

    test_PyFrozenSet_Check = CPyExtFunction(
        lambda args: isinstance(args[0], frozenset),
        default_typecheck_args,
        resultspec="i",
        argspec='O',
        arguments=["PyObject* o"],
        cmpfunc=unhandled_error_compare
    )

    test_PyFrozenSet_CheckExact = CPyExtFunction(
        lambda args: type(args[0]) is frozenset,
        default_typecheck_args,
        resultspec="i",
        argspec='O',
        arguments=["PyObject* o"],
        cmpfunc=unhandled_error_compare
    )

    test_PyAnySet_CheckExact = CPyExtFunction(
        lambda args: type(args[0]) is set or type(args[0]) is frozenset,
        default_typecheck_args,
        resultspec="i",
        argspec='O',
        arguments=["PyObject* o"],
        cmpfunc=unhandled_error_compare
    )

    test_PyAnySet_Check = CPyExtFunction(
        lambda args: isinstance(args[0], set) or isinstance(args[0], frozenset),
        default_typecheck_args,
        resultspec="i",
        argspec='O',
        arguments=["PyObject* o"],
        cmpfunc=unhandled_error_compare
    )

    test_PySet_Check = CPyExtFunction(
        lambda args: isinstance(args[0], set),
        default_typecheck_args,
        resultspec="i",
        argspec='O',
        arguments=["PyObject* o"],
        cmpfunc=unhandled_error_compare
    )

    test_PySet_Contains = CPyExtFunction(
        _reference_contains,
        lambda: (
            (set(),"A"),
            (set(),None),
            (set([1, 2, 3]),1),
            (set({'a', 'b'}),'a'),
            (frozenset([1, 2, 3]),[1,2,3]),
            (frozenset({'a', 'b'}),'A'),
            (frozenset([None]),None),
            (FrozenSetSubclass(),None),
            (SetSubclass([None]),None),
        ),
        resultspec="i",
        argspec='OO',
        arguments=["PyObject* o", "PyObject* item"],
        cmpfunc=unhandled_error_compare
    )

    test_PySet_GET_SIZE = CPyExtFunction(
        lambda args: len(args[0]),
        lambda: (
            (set(),),
            (set(),),
            (set([1, 2, 3]),),
            (set({'a', 'b'}),),
            (frozenset([1, 2, 3]),),
            (frozenset({'a', 'b'}),),
            (frozenset([None]),),
            (FrozenSetSubclass(),),
            (SetSubclass([None]),),
        ),
        resultspec="n",
        argspec='O',
        arguments=["PyObject* o"],
        cmpfunc=unhandled_error_compare
    )

    test_PySet_Clear = CPyExtFunction(
        _reference_clear,
        lambda: (
            ({1, 2, 3},),
            ({1, "a", 0.1},),
        ),
        code='''PyObject* wrap_PySet_Clear(PyObject* set) {
            if (PySet_Clear(set)) {
                return NULL;
            }
            Py_INCREF(set);
            return set;
        }
        ''',
        resultspec="O",
        argspec='O',
        arguments=["PyObject* set"],
        callfunction="wrap_PySet_Clear",
        cmpfunc=unhandled_error_compare
    )

