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t_mixerctl.sh revision 1.9 
      1 # $NetBSD: t_mixerctl.sh,v 1.9 2017/07/25 21:25:03 kre Exp $
      2 
      3 audio_setup() {
      4 	# Open /dev/pad0 so we have a configured audio device.
      5 	# Do it in a way that guarantees the open happens before
      6 	# we proceed to the (</dev/mixer) below (do not expect
      7 	# cat to be running in time to open the device.)
      8 
      9 	# Note: it is not important that the open of pad0 succeeds,
     10 	# if there is real audio hardware on the system, that can (will)
     11 	# be used instead, and having pad0 open is irrelevant.
     12 	# So, no errors reported if pad0 open fails.  If there turns
     13 	# out to be no audio device of any kind, then the open of the
     14 	# mixer will fail, causing the test to be skipped.
     15 
     16 	# Saving padpid and later killing it seems to be unnecessary,
     17 	# ATF appears to killpg() the process after the test finishes
     18 	# which is a good thing, otherwise a test that is skipped/fails
     19 	# would not kill the cat (doing it in a cleanup function is not
     20 	# convenient as it is a different execution environment, no shared
     21 	# variables, we would need to put $padpid in a file.)
     22 
     23 	unset padpid
     24 	test -r /dev/pad0 && 
     25 	    { { cat >/dev/null & } < /dev/pad0 ; } 2>/dev/null && padpid=$!
     26 
     27 	(</dev/mixer) >/dev/null 2>&1 ||
     28 	    atf_skip "no audio mixer available in kernel"
     29 }
     30 
     31 atf_test_case noargs_usage
     32 noargs_usage_head() {
     33 	atf_set "descr" "Ensure mixerctl(1) with no args prints a usage message"
     34 }
     35 noargs_usage_body() {
     36 	audio_setup
     37 
     38 	atf_check -s exit:0 -o not-empty -e ignore \
     39 		mixerctl
     40 
     41 	${padpid+kill -HUP ${padpid}} 2>/dev/null || :
     42 }
     43 
     44 atf_test_case showvalue
     45 showvalue_head() {
     46 	atf_set "descr" "Ensure mixerctl(1) can print the value for all variables"
     47 }
     48 showvalue_body() {
     49 	audio_setup
     50 
     51 	for var in $(mixerctl -a | awk -F= '{print $1}'); do
     52 		atf_check -s exit:0 -e ignore -o match:"^${var}=" \
     53 			mixerctl ${var}
     54 	done
     55 
     56 	${padpid+kill -HUP ${padpid}} 2>/dev/null || :
     57 }
     58 
     59 atf_test_case nflag
     60 nflag_head() {
     61 	atf_set "descr" "Ensure 'mixerctl -n' actually suppresses some output"
     62 }
     63 nflag_body() {
     64 	audio_setup
     65 
     66 	varname="$(mixerctl -a | sed -e 's/=.*//' -e q)"
     67 
     68 	atf_check -s exit:0 -o match:"${varname}" -e ignore \
     69 		mixerctl ${varname}
     70 
     71 	atf_check -s exit:0 -o not-match:"${varname}" -e ignore \
     72 		mixerctl -n ${varname}
     73 
     74 	${padpid+kill -HUP ${padpid}} 2>/dev/null || :
     75 }
     76 
     77 atf_test_case nonexistant_device
     78 nonexistant_device_head() {
     79 	atf_set "descr" "Ensure mixerctl(1) complains if provided a nonexistant mixer device"
     80 }
     81 nonexistant_device_body() {
     82 	atf_check -s not-exit:0  -o ignore -e match:"No such file" \
     83 		mixerctl -a -d /a/b/c/d/e
     84 }
     85 
     86 atf_init_test_cases() {
     87 	atf_add_test_case noargs_usage
     88 	atf_add_test_case showvalue
     89 	atf_add_test_case nflag
     90 	atf_add_test_case nonexistant_device
     91 }
     92