SylvainDe / DidYouMean-Python

        self.runs(cmp_arg, up_to_version(v3))

        self.throws(cmp_arg, UNEXPECTEDKWARG2,

                    CMP_ARG_REMOVED_MSG, from_version(v3), 'cython')

        self.throws(cmp_arg, UNEXPECTEDKWARG,

                    CMP_ARG_REMOVED_MSG, from_version(v3), 'pypy')

        self.runs(key_arg)

        self.runs(cmp_to_key, from_version((2, 7)))

    def test_no_implicit_str_conv(self):

        """Trying to concatenate a non-string value to a string."""

        # NICE_TO_HAVE

        code = '{0} + " things"'

        typo, sugg = '12', 'str(12)'

        bad_code, good_code = format_str(code, typo, sugg)

        self.throws(bad_code, UNSUPPORTEDOPERAND)

        self.runs(good_code)

    def test_no_implicit_str_conv2(self):

        """Trying to concatenate a non-string value to a string."""

        # NICE_TO_HAVE

        code = '"things " + {0}'

        typo, sugg = '12', 'str(12)'

        bad_code, good_code = format_str(code, typo, sugg)

        self.throws(code, INVALIDSYNTAX, [], up_to_version(version))

        self.runs(code, from_version(version))

    def test_unpack2(self):

        """Unpacking in function arguments was supported up to Python 3."""

        # NICE_TO_HAVE

        version = (3, 0)

        code = 'def addpoints((x1, y1), (x2, y2)):\n\tpass'

        self.runs(code, up_to_version(version))

        self.throws(code, INVALIDSYNTAX, [], from_version(version))

    def test_nonlocal(self):

        """nonlocal keyword is added in Python 3."""

        # NICE_TO_HAVE

        version = (3, 0)

        code = 'def func():\n\tfoo = 1\n\tdef nested():\n\t\tnonlocal foo'

        self.runs(code, from_version(version))