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from json.tests import CTest


class BadBool:
    def __nonzero__(self):
        1/0.0


class TestSpeedups(CTest):
    def test_scanstring(self):
        self.assertEqual(self.json.decoder.scanstring.__module__, "_json")
        self.assertIs(self.json.decoder.scanstring, self.json.decoder.c_scanstring)

    def test_encode_basestring_ascii(self):
        self.assertEqual(self.json.encoder.encode_basestring_ascii.__module__,
                         "_json")
        self.assertIs(self.json.encoder.encode_basestring_ascii,
                      self.json.encoder.c_encode_basestring_ascii)

class TestDecode(CTest):
    def test_make_scanner(self):
        self.assertRaises(AttributeError, self.json.scanner.c_make_scanner, 1)

    def test_bad_bool_args(self):
        def test(value):
            self.json.decoder.JSONDecoder(strict=BadBool()).decode(value)
        self.assertRaises(ZeroDivisionError, test, '""')
        self.assertRaises(ZeroDivisionError, test, '{}')
        self.assertRaises(ZeroDivisionError, test, u'""')
        self.assertRaises(ZeroDivisionError, test, u'{}')


class TestEncode(CTest):
    def test_make_encoder(self):
        self.assertRaises(TypeError, self.json.encoder.c_make_encoder,
            None,
            "\xCD\x7D\x3D\x4E\x12\x4C\xF9\x79\xD7\x52\xBA\x82\xF2\x27\x4A\x7D\xA0\xCA\x75",
            None)

    def test_bad_bool_args(self):
        def test(name):
            self.json.encoder.JSONEncoder(**{name: BadBool()}).encode({'a': 1})
        self.assertRaises(ZeroDivisionError, test, 'skipkeys')
        self.assertRaises(ZeroDivisionError, test, 'ensure_ascii')
        self.assertRaises(ZeroDivisionError, test, 'check_circular')
        self.assertRaises(ZeroDivisionError, test, 'allow_nan')
        self.assertRaises(ZeroDivisionError, test, 'sort_keys')

    def test_bad_encoding(self):
        with self.assertRaises(UnicodeEncodeError):
            self.json.encoder.JSONEncoder(encoding=u'\udcff').encode({'key': 123})