#
# Make sure that all the base command arguments are found in the path.
# This isn't strictly necessary as the test will naturally fail if the
# command isn't found, but it's nice to fail fast and clearly
# communicate why.
#
t_require_commands() {
	local c

	for c in "$@"; do
		which "$c" >/dev/null 2>&1 || \
			t_fail "command $c not found in path"
	done
}

#
# make sure that we have at least this many mounts
#
t_require_mounts() {
	local req="$1"

	test "$T_NR_MOUNTS" -ge "$req" || \
		t_skip "$req mounts required, only have $T_NR_MOUNTS"
}

#
# Require that the meta device be at least the size string argument, as
# parsed by numfmt using single char base 2 suffixes (iec).. 64G, etc.
#
t_require_meta_size() {
	local dev="$T_META_DEVICE"
	local req_iec="$1"
	local req_bytes=$(numfmt --from=iec --to=none $req_iec)
	local dev_bytes=$(blockdev --getsize64 $dev)
	local dev_iec=$(numfmt --from=auto --to=iec $dev_bytes)

	test "$dev_bytes" -ge "$req_bytes" || \
		t_skip "$dev must be at least $req_iec, is $dev_iec"
}