. "$BST_LIB"

# tzdata is data only -- the zic-compiled IANA zoneinfo database plus the
# /etc/localtime + /etc/timezone default (Universal); no binary to `require`.
# glibc reads the TZif files for TZ/localtime conversion, so `date` under an
# explicit TZ proves the database end-to-end.

# The zoneinfo tree is installed, with the zone index table.
check tzdata/zoneinfo-dir test -d /usr/share/zoneinfo
check tzdata/zone-tab test -f /usr/share/zoneinfo/zone.tab

# The compiled UTC zone carries the TZif magic.
check_out tzdata/utc-tzif "TZif" head -c 4 /usr/share/zoneinfo/UTC

# The default timezone config: /etc/timezone names Universal and /etc/localtime
# resolves to a compiled TZif file.
check_out tzdata/etc-timezone "Universal" cat /etc/timezone
check_out tzdata/localtime-tzif "TZif" head -c 4 /etc/localtime

# Functional: glibc resolves named zones from the database (Tokyo is UTC+9 with
# no DST -- deterministic year-round).
check_eq tzdata/tokyo-offset "+0900" "$(TZ=Asia/Tokyo date +%z)"
check_eq tzdata/utc-offset "+0000" "$(TZ=UTC date +%z)"

# The database is substantially present (main + posix + right trees).
n=$(find /usr/share/zoneinfo -type f | wc -l)
if [ "$n" -ge 1000 ]; then bst_ok tzdata/count
else bst_notok tzdata/count "only $n files under /usr/share/zoneinfo"; fi