# SPDX-FileCopyrightText: Stone Tickle <lattis@mochiro.moe>
# SPDX-License-Identifier: GPL-3.0-only

arr = ['a', 'b', 'c']
assert(' '.join(arr) == 'a b c')
assert(''.join(arr) == 'abc')
assert(', '.join(arr) == 'a, b, c')
arr = []
assert(' '.join(arr) == '')
arr = ['a']
assert(' '.join(arr) == 'a')
