. "$BST_LIB"
require cgget libcgroup/present

# cgget/cgset/cgcreate act on a mounted controller hierarchy. The wasm32 browser
# runtime may expose none, so probe once and report the hierarchy-dependent case
# as a skip rather than a failure when it is absent.
hier=""
if [ -d /sys/fs/cgroup ]; then
  hier=$(ls /sys/fs/cgroup 2>/dev/null | head -1)
fi

for t in cgcreate cgexec cgget cgset; do
  if command -v "$t" >/dev/null 2>&1; then bst_ok "libcgroup/have-$t"
  else bst_notok "libcgroup/have-$t" "not on PATH"; fi
done

check_out libcgroup/cgget-usage "cgget" cgget -h

if [ -n "$hier" ]; then
  check libcgroup/cgget-controller cgget -g "$hier" /
else
  bst_skip libcgroup/cgget-controller "no cgroup controller hierarchy under /sys/fs/cgroup"
fi