from pypy.module.cpyext.test.test_api import BaseApiTest, raises_w
from pypy.module.cpyext.test.test_cpyext import AppTestCpythonExtensionBase
from pypy.module.cpyext.setobject import (
    PySet_Check, PyFrozenSet_Check, PyFrozenSet_CheckExact,
    PySet_Add, PySet_Size, PySet_GET_SIZE)


class TestTupleObject(BaseApiTest):
    def test_setobj(self, space):
        assert not PySet_Check(space, space.w_None)
        assert not PyFrozenSet_Check(space, space.w_None)
        with raises_w(space, SystemError):
            PySet_Add(space, space.w_None, space.w_None)
        w_set = space.call_function(space.w_set)
        assert not PyFrozenSet_CheckExact(space, w_set)
        space.call_method(w_set, 'update', space.wrap([1, 2, 3, 4]))
        assert PySet_Size(space, w_set) == 4
        assert PySet_GET_SIZE(space, w_set) == 4
        with raises_w(space, TypeError):
            PySet_Size(space, space.newlist([]))

    def test_set_add_discard(self, space, api):
        w_set = api.PySet_New(None)
        assert api.PySet_Size(w_set) == 0
        w_set = api.PyFrozenSet_New(space.wrap([1, 2, 3, 4]))
        assert api.PySet_Size(w_set) == 4
        w_set = api.PySet_New(space.wrap([1, 2, 3, 4]))
        assert api.PySet_Size(w_set) == 4
        api.PySet_Add(w_set, space.wrap(6))
        assert api.PySet_Size(w_set) == 5
        res = api.PySet_Discard(w_set, space.wrap(6))
        assert res == 1
        assert api.PySet_Size(w_set) == 4
        res = api.PySet_Discard(w_set, space.wrap(6))
        assert res == 0
        assert api.PySet_Size(w_set) == 4

    def test_set_contains(self, space, api):
        w_set = api.PySet_New(space.wrap([1, 2, 3, 4]))
        assert api.PySet_Contains(w_set, space.wrap(1))
        assert not api.PySet_Contains(w_set, space.wrap(0))

    def test_set_pop_clear(self, space, api):
        w_set = api.PySet_New(space.wrap([1, 2, 3, 4]))
        w_obj = api.PySet_Pop(w_set)
        assert space.int_w(w_obj) in (1, 2, 3, 4)
        assert space.len_w(w_set) == 3
        api.PySet_Clear(w_set)
        assert space.len_w(w_set) == 0

    def test_anyset_check(self, space, api):
        w_set = api.PySet_New(space.wrap([1, 2, 3, 4]))
        w_frozenset = space.newfrozenset([space.wrap(i) for i in [1, 2, 3, 4]])
        assert api.PyAnySet_CheckExact(w_set)
        assert api.PyAnySet_CheckExact(w_frozenset)
        assert api.PyAnySet_Check(w_set)
        assert api.PyAnySet_Check(w_frozenset)
        w_instance = space.appexec([], """():
            class MySet(set):
                pass
            return MySet()
        """)
        assert api.PyAnySet_Check(w_instance)

class AppTestSetObject(AppTestCpythonExtensionBase):
    def test_set_macro_cast(self):
        module = self.import_extension('foo', [
            ("test_macro_cast", "METH_NOARGS",
             """
             PyObject* o = PySet_New(NULL);
             // no PySetObject
             char* dumb_pointer = (char*) o;

             PySet_GET_SIZE(o);
             PySet_GET_SIZE(dumb_pointer);

             return o;
             """)
        ])