@test fn string_resolve() void = {
	assert(string_resolve([
		(c, "c"),
		(parse("xx_XX")!, "xx_XX"),
	], c) as str == "c");
	assert(string_resolve([
		(c, "c"),
		(parse("xx_XX")!, "xx_XX"),
	], parse("xx_XX.UTF-8")!) as str == "xx_XX");
	assert(string_resolve([
		(c, "c"),
		(parse("xx_XX")!, "xx_XX"),
	], parse("yy_YY.UTF-8")!) as str == "c");
	assert(string_resolve([
		(parse("xx_XX")!, "xx_XX"),
		(parse("zz_ZZ")!, "zz_ZZ"),
	], parse("yy_YY")!) is void);
};