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Do this more cleanly - put the do-we-have-crypto check inside the actual
do-the-test code rather than in a test's head() code.  This way, if we
ever add more tests, we simply need to invoke the common do-the-test code
with an appropriate flag argument rather than duplicating the test.

# $NetBSD: t_factor.sh,v 1.9 2016/06/27 05:29:32 pgoyette Exp $
#
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expect() {
	echo "${2}" >expout
	ncrypt=$( ldd /usr/games/factor | grep -c -- -lcrypt )
	if [ "X$3" != "X" -a $ncrypt -eq 0 ] ; then 
		atf_skip "crypto needed for huge non-prime factors - PR bin/23663"
	fi
	atf_check -s eq:0 -o file:expout -e empty /usr/games/factor ${1}
}

atf_test_case overflow1
overflow1_head() {
	atf_set "descr" "Tests for overflow conditions"
	atf_set "require.progs" "/usr/games/factor"
}
overflow1_body() {
	expect '8675309' '8675309: 8675309'
}

atf_test_case overflow2
overflow2_head() {
	atf_set "descr" "Tests for overflow conditions"
	atf_set "require.progs" "/usr/games/factor"
}
overflow2_body() {
	expect '6172538568' '6172538568: 2 2 2 3 7 17 2161253'
}

atf_test_case loop1
loop1_head() {
	atf_set "descr" "Tests some cases that once locked the program" \
	                "in an infinite loop"
	atf_set "require.progs" "/usr/games/factor"
}
loop1_body() {
	expect '2147483647111311' '2147483647111311: 3 3 3 131 607148331103'
}

atf_test_case loop2
loop2_head() {
	atf_set "descr" "Tests some cases that once locked the program" \
	                "in an infinite loop"
	atf_set "require.progs" "/usr/games/factor"
}
loop2_body() {
	expect '99999999999991' '99999999999991: 7 13 769231 1428571' Need_Crypto
}

atf_init_test_cases()
{
	atf_add_test_case overflow1
	atf_add_test_case overflow2
	atf_add_test_case loop1
	atf_add_test_case loop2
}