xref: /src/tests/bin/sh/t_exit.sh

# $NetBSD: t_exit.sh,v 1.4 2016/02/24 14:42:06 christos Exp $
#
# Copyright (c) 2007 The NetBSD Foundation, Inc.
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# the implementation of "sh" to test
: ${TEST_SH:="/bin/sh"}


atf_test_case background
background_head() {
	atf_set "descr" "Tests that sh(1) sets '$?' properly when running " \
			"a command in the background (PR bin/46327)"
}
background_body() {
	atf_check -o match:0 -e empty "${TEST_SH}" -c 'true; true & echo $?'
	# atf_expect_fail "PR bin/46327" (now fixed?)
	atf_check -o match:0 -e empty "${TEST_SH}" -c 'false; true & echo $?'
}

atf_test_case function
function_head() {
	atf_set "descr" "Tests that \$? is correctly updated inside " \
			"a function"
}
function_body() {
	atf_check -s exit:0 -o match:STATUS=1-0 -e empty \
		"${TEST_SH}" -c '
			crud() {
				test yes = no

				cat <<-EOF
				STATUS=$?
				EOF
			}
			foo=$(crud)
			echo "${foo}-$?"
		'
}

atf_test_case readout
readout_head() {
	atf_set "descr" "Tests that \$? is correctly updated in a " \
			"compound expression"
}
readout_body() {
	atf_check -s exit:0 -o match:0 -e empty \
		"${TEST_SH}" -c 'true && ! true | false; echo $?'
}

atf_test_case trap_subshell
trap_subshell_head() {
	atf_set "descr" "Tests that the trap statement in a subshell " \
			"works when the subshell exits"
}
trap_subshell_body() {
	atf_check -s exit:0 -o inline:'exiting\n' -e empty \
	    ${TEST_SH} -c '( trap "echo exiting" EXIT; /usr/bin/true )'
}

atf_test_case trap_zero__implicit_exit
trap_zero__implicit_exit_head() {
	atf_set "descr" "Tests that the trap statement in a subshell in a " \
		"script works when the subshell simply runs out of commands"
}
trap_zero__implicit_exit_body() {
	# PR bin/6764: sh works but ksh does not
	echo '( trap "echo exiting" 0 )' >helper.sh
	atf_check -s exit:0 -o match:exiting -e empty "${TEST_SH}" helper.sh
	# test ksh by setting TEST_SH to /bin/ksh and run the entire set...
	# atf_check -s exit:0 -o match:exiting -e empty /bin/ksh helper.sh
}

atf_test_case trap_zero__explicit_exit
trap_zero__explicit_exit_head() {
	atf_set "descr" "Tests that the trap statement in a subshell in a " \
		"script works when the subshell executes an explicit exit"
}
trap_zero__explicit_exit_body() {
	echo '( trap "echo exiting" 0; exit; echo NO_NO_NO )' >helper.sh
	atf_check -s exit:0 -o match:exiting -o not-match:NO_NO -e empty \
		"${TEST_SH}" helper.sh
	# test ksh by setting TEST_SH to /bin/ksh and run the entire set...
	# atf_check -s exit:0 -o match:exiting -e empty /bin/ksh helper.sh
}

# Is return really defined to operate other than in functions (& '.') ??
atf_test_case trap_zero__explicit_return
trap_zero__explicit_return_head() {
	atf_set "descr" "Tests that the trap statement in a subshell in a " \
			"script works when the subshell executes a return"
}
trap_zero__explicit_return_body() {
	echo '( trap "echo exiting" 0; return; echo NO_NO_NO )' >helper.sh
	atf_expect_fail "return from a sub-shell not defined and does not work"
	atf_check -s exit:0 -o match:exiting -o not-match:NO_NO -e empty \
		"${TEST_SH}" helper.sh
	# test ksh by setting TEST_SH to /bin/ksh and run the entire set...
	# atf_check -s exit:0 -o match:exiting -e empty /bin/ksh helper.sh
}

atf_test_case simple_exit
simple_exit_head() {
	atf_set "descr" "Tests that various values for exit status work"
}
# Note: ATF will not allow tests of exit values > 255, even if they would work
simple_exit_body() {
	for N in 0 1 2 3 4 5 6 42 99 101 125 126 127 128 129 200 254 255
	do
		atf_check -s exit:$N -o empty -e empty \
			"${TEST_SH}" -c "exit $N; echo FOO; echo BAR >&2"
	done
}

atf_test_case subshell_exit
subshell_exit_head() {
	atf_set "descr" "Tests that subshell exit status works and \$? gets it"
}
# Note: ATF will not allow tests of exit values > 255, even if they would work
subshell_exit_body() {
	for N in 0 1 2 3 4 5 6 42 99 101 125 126 127 128 129 200 254 255
	do
		atf_check -s exit:0 -o empty -e empty \
			"${TEST_SH}" -c "(exit $N); test \$? -eq $N"
	done
}

atf_test_case subshell_background
subshell_background_head() {
	atf_set "descr" "Tests that sh(1) sets '$?' properly when running " \
			"a subshell in the background"
}
subshell_background_body() {
	atf_check -o match:0 -e empty \
		"${TEST_SH}" -c 'true; (false || true) & echo $?'
	# atf_expect_fail "PR bin/46327" (now fixed?)
	atf_check -o match:0 -e empty \
		"${TEST_SH}" -c 'false; (false || true) & echo $?'
}

atf_init_test_cases() {
	atf_add_test_case background
	atf_add_test_case function
	atf_add_test_case readout
	atf_add_test_case trap_subshell
	atf_add_test_case trap_zero__implicit_exit
	atf_add_test_case trap_zero__explicit_exit
	atf_add_test_case trap_zero__explicit_return
	atf_add_test_case simple_exit
	atf_add_test_case subshell_exit
	atf_add_test_case subshell_background
}