How to use the extractcode.new_name function in extractcode

base_dir = self.get_temp_dir()
        self.assertRaises(AssertionError, new_name, '', is_dir=False)
        test_file = base_dir + '/'
        renamed = new_name(test_file, is_dir=False)
        assert renamed
        assert not exists(renamed)

        test_file = join(base_dir, '.')
        renamed = new_name(test_file, is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert '_' == result

        test_dir = base_dir + '/'

        renamed = new_name(test_dir, is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert result

        test_dir = join(base_dir, '.')
        renamed = new_name(test_dir, is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert '_' == result

test_file = join(base_dir, '.')
        renamed = new_name(test_file, is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert '_' == result

        test_dir = base_dir + '/'

        renamed = new_name(test_dir, is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert result

        test_dir = join(base_dir, '.')
        renamed = new_name(test_dir, is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert '_' == result

renamed = new_name(join(test_dir, 'test.txt'), is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'test_3.txt' == result

        renamed = new_name(join(test_dir, 'TEST.txt'), is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'TEST_3.txt' == result

        renamed = new_name(join(test_dir, 'TEST.tXt'), is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'TEST_3.tXt' == result

        renamed = new_name(join(test_dir, 'test.txt'), is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'test.txt_2' == result

        renamed = new_name(join(test_dir, 'teST.txt'), is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'teST.txt_2' == result

def test_new_name_without_extensions(self):
        test_dir = self.get_test_loc('new_name/noext', copy=True)
        renamed = new_name(join(test_dir, 'test'), is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'test_4' == result

        renamed = new_name(join(test_dir, 'TEST'), is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'TEST_4' == result

        renamed = new_name(join(test_dir, 'test_1'), is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert 'test_1_1' == result

def test_new_name_with_empties(self):
        base_dir = self.get_temp_dir()
        self.assertRaises(AssertionError, new_name, '', is_dir=False)
        test_file = base_dir + '/'
        renamed = new_name(test_file, is_dir=False)
        assert renamed
        assert not exists(renamed)

        test_file = join(base_dir, '.')
        renamed = new_name(test_file, is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert '_' == result

        test_dir = base_dir + '/'

        renamed = new_name(test_dir, is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert result

def test_new_name_with_empties(self):
        base_dir = self.get_temp_dir()
        self.assertRaises(AssertionError, new_name, '', is_dir=False)
        test_file = base_dir + '/'
        renamed = new_name(test_file, is_dir=False)
        assert renamed
        assert not exists(renamed)

        test_file = join(base_dir, '.')
        renamed = new_name(test_file, is_dir=False)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert '_' == result

        test_dir = base_dir + '/'

        renamed = new_name(test_dir, is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert result

        test_dir = join(base_dir, '.')
        renamed = new_name(test_dir, is_dir=True)
        assert not exists(renamed)
        result = fileutils.file_name(renamed)
        assert '_' == result

# TODO: also rename directories to a new name if needed segment by segment
            dir_path = os.path.join(abs_target_dir, clean_path)
            fileutils.create_dir(dir_path)
            return dir_path

        # note: here isfile=True
        try:
            # create parent directories if needed
            target_path = os.path.join(abs_target_dir, clean_path)
            parent_path = os.path.dirname(target_path)

            # TODO: also rename directories to a new name if needed segment by segment
            fileutils.create_dir(parent_path)

            # TODO: return some warning when original path has been renamed?
            unique_path = extractcode.new_name(target_path, is_dir=False)

            chunk_len = 10240
            sbuffer = create_string_buffer(chunk_len)
            with open(unique_path, 'wb') as target:
                chunk_size = 1
                while chunk_size:
                    chunk_size = read_entry_data(self.archive.archive_struct,
                                                 sbuffer, chunk_len)
                    data = sbuffer.raw[0:chunk_size]
                    target.write(data)
            os.utime(unique_path, (self.time, self.time))
            return target_path

        except ArchiveWarning, aw:
            msg = aw.args and '\n'.join(aw.args) or 'No message provided.'
            if msg not in self.warnings: