SylvainDe / DidYouMean-Python

        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)

        version = (3, 0)

        version2 = (3, 6)

        self.throws(

            bad_code, CANNOTCONCAT, [], up_to_version(version), 'cython')

        self.throws(

            bad_code, CANTCONVERT, [], (version, version2), 'cython')

        self.throws(

            bad_code, MUSTBETYPENOTTYPE, [], from_version(version2), 'cython')

        self.throws(

            bad_code, UNSUPPORTEDOPERAND, [], ALL_VERSIONS, 'pypy')

        self.runs(good_code)

    def test_assignment_to_range(self):

        """Trying to assign to range works on list, not on range."""

        code = '{0}[2] = 1'

        typo, sugg = 'range(4)', 'list(range(4))'

        version = (3, 0)

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

        self.runs(good_code)

        self.runs(bad_code, up_to_version(version))

        self.throws(

            bad_code,

            OBJECTDOESNOTSUPPORT,

            'convert to list to edit the list',

                      ('func_globals', '__globals__', []),

                      ('func_code', '__code__', [])]

        for (old_att, new_att, sugg) in attributes:

            old_code, new_code = format_str(code, old_att, new_att)

            self.runs(old_code, up_to_version(version))

            self.throws(old_code, ATTRIBUTEERROR, sugg, from_version(version))

            self.runs(new_code)

    def test_removed_method_attributes(self):

        """Some methods attributes are removed."""

        # NICE_TO_HAVE

        version = (3, 0)

        code = 'FoobarClass().some_method.{0}'

        attributes = [('im_func', '__func__', []),

                      ('im_self', '__self__', []),

                      ('im_class', '__self__.__class__', ["'__class__'"])]

        for (old_att, new_att, sugg) in attributes:

            old_code, new_code = format_str(code, old_att, new_att)

            self.runs(old_code, up_to_version(version))

            self.throws(old_code, ATTRIBUTEERROR, sugg, from_version(version))

            self.runs(new_code)