SylvainDe / DidYouMean-Python

        self.runs('s = set([tuple()])')

        self.runs('s = set([frozenset()])')

    def test_not_sub(self):

        """Should be function call, not [] operator."""

        # https://twitter.com/raymondh/status/772957699478663169

        typo, sugg = '[2]', '(2)'

        code = func_gen(param='a') + 'some_func{0}'

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

        suggestion = "'function(value)'"

        # Only Python 2.7 with cpython has a different error message

        # (leading to more suggestions based on fuzzy matches)

        version1 = (2, 7)

        version2 = (3, 0)

        self.throws(bad_code, UNSUBSCRIPTABLE, suggestion, interpreters='pypy')

        self.throws(bad_code, UNSUBSCRIPTABLE, suggestion,

                    up_to_version(version1), 'cython')

        self.throws(bad_code, UNSUBSCRIPTABLE, suggestion,

                    from_version(version2), 'cython')

        self.throws(bad_code, NOATTRIBUTE_TYPEERROR,

                    ["'__get__'", "'__getattribute__'", suggestion],

                    (version1, version2), 'cython')

        self.runs(good_code)

    def test_method_called_on_class(self):

        """Test where a method is called on a class and not an instance.

        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, interpreters='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, good = 'range(4)', 'list(range(4))'

        sugg = 'convert to list to edit the list'

        before, after = before_and_after((3, 0))

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

        self.runs(good_code)

        self.runs(bad_code, before)