# $NetBSD: t_date.sh,v 1.2 2020/10/30 22:03:35 kre Exp $
#
# Copyright (c) 2020 The NetBSD Foundation, Inc.
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#
# This code is derived from software contributed to The NetBSD Foundation
# by Jukka Ruohonen.
#
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# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
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#
atf_test_case overflow
overflow_head() {
	atf_set "descr" "Check that date(1) does not overflow (PR lib/46542)"
}

overflow_body() {

	## atf_expect_fail "PR lib/46542"	# no longer true

	years="1 10 100 1000 10000 100000 1000000 10000000 \
	      100000000 1000000000 10000000000 100000000000"

	for year in $years; do

		y=$(date +%Y)
		yy=$((y + year))
		yyy=$(date -d "$year years" +%Y) || continue

		if [ "$yy" -ne "$yyy" ]; then
			atf_fail "$yy vs. $yyy"
		fi
	done
}

atf_init_test_cases() {
	atf_add_test_case overflow
}