failures=0

check() {
	testcase=$1
	expect=$2
	eval "set -- $testcase"
	actual="$*"
	if [ "$actual" != "$expect" ]; then
		failures=$((failures+1))
		printf '%s\n' "For $testcase, expected $expect actual $actual"
	fi
}

set -e
T=$(mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXX)
trap 'rm -rf $T' 0
cd -P $T

touch A B a b

LC_ALL=C
export LC_ALL
unset LC_COLLATE
check '*' 'A B a b'

unset LC_ALL
LC_COLLATE=en_US.US-ASCII
export LC_COLLATE
set -- *
case "$*" in
'a A b B'|'A B a b')
	:
	;;
*)
	failures=$((failures + 1))
	printf '%s\n' "For *, expected locale-aware or C collation fallback actual $*"
	;;
esac

exit $((failures != 0))