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      1 # $NetBSD: t_mixerctl.sh,v 1.12 2022/08/10 00:14:22 charlotte Exp $
      2 #
      3 # Copyright (c) 2017 The NetBSD Foundation, Inc.
      4 # All rights reserved.
      5 #
      6 # This code is derived from software contributed to The NetBSD Foundation
      7 # by Charlotte Koch.
      8 #
      9 # Redistribution and use in source and binary forms, with or without
     10 # modification, are permitted provided that the following conditions
     11 # are met:
     12 # 1. Redistributions of source code must retain the above copyright
     13 #    notice, this list of conditions and the following disclaimer.
     14 # 2. Redistributions in binary form must reproduce the above copyright
     15 #    notice, this list of conditions and the following disclaimer in the
     16 #    documentation and/or other materials provided with the distribution.
     17 #
     18 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28 # POSSIBILITY OF SUCH DAMAGE.
     29 #
     30 
     31 audio_setup() {
     32 	# Open /dev/pad0 so we have a configured audio device.
     33 	# Do it in a way that guarantees the open happens before
     34 	# we proceed to the (</dev/mixer) below (do not expect
     35 	# cat to be running in time to open the device.)
     36 
     37 	# Note: it is not important that the open of pad0 succeeds,
     38 	# if there is real audio hardware on the system, that can (will)
     39 	# be used instead, and having pad0 open is irrelevant.
     40 	# So, no errors reported if pad0 open fails.  If there turns
     41 	# out to be no audio device of any kind, then the open of the
     42 	# mixer will fail, causing the test to be skipped.
     43 
     44 	# Saving padpid and later killing it seems to be unnecessary,
     45 	# ATF appears to killpg() the process after the test finishes
     46 	# which is a good thing, otherwise a test that is skipped/fails
     47 	# would not kill the cat (doing it in a cleanup function is not
     48 	# convenient as it is a different execution environment, no shared
     49 	# variables, we would need to put $padpid in a file.)
     50 
     51 	unset padpid
     52 	( true </dev/pad0 ) >/dev/null 2>&1 &&
     53 	    { { cat >/dev/null & } < /dev/pad0 ; } 2>/dev/null && padpid=$!
     54 
     55 	(</dev/mixer) >/dev/null 2>&1 ||
     56 	    atf_skip "no audio mixer available in kernel"
     57 }
     58 
     59 atf_test_case noargs_usage
     60 noargs_usage_head() {
     61 	atf_set "descr" "Ensure mixerctl(1) with no args prints a usage message"
     62 }
     63 noargs_usage_body() {
     64 	audio_setup
     65 
     66 	atf_check -s exit:1 -o empty -e not-empty \
     67 		mixerctl
     68 
     69 	${padpid+kill -HUP ${padpid}} 2>/dev/null || :
     70 }
     71 
     72 atf_test_case showvalue
     73 showvalue_head() {
     74 	atf_set "descr" "Ensure mixerctl(1) can print the value for all variables"
     75 }
     76 showvalue_body() {
     77 	audio_setup
     78 
     79 	for var in $(mixerctl -a | awk -F= '{print $1}'); do
     80 		atf_check -s exit:0 -e ignore -o match:"^${var}=" \
     81 			mixerctl ${var}
     82 	done
     83 
     84 	${padpid+kill -HUP ${padpid}} 2>/dev/null || :
     85 }
     86 
     87 atf_test_case nflag
     88 nflag_head() {
     89 	atf_set "descr" "Ensure 'mixerctl -n' actually suppresses some output"
     90 }
     91 nflag_body() {
     92 	audio_setup
     93 
     94 	varname="$(mixerctl -a | sed -e 's/=.*//' -e q)"
     95 
     96 	atf_check -s exit:0 -o match:"${varname}" -e ignore \
     97 		mixerctl ${varname}
     98 
     99 	atf_check -s exit:0 -o not-match:"${varname}" -e ignore \
    100 		mixerctl -n ${varname}
    101 
    102 	${padpid+kill -HUP ${padpid}} 2>/dev/null || :
    103 }
    104 
    105 atf_test_case nonexistant_device
    106 nonexistant_device_head() {
    107 	atf_set "descr" "Ensure mixerctl(1) complains if provided a nonexistant mixer device"
    108 }
    109 nonexistant_device_body() {
    110 	atf_check -s not-exit:0  -o ignore -e match:"No such file" \
    111 		mixerctl -a -d /a/b/c/d/e
    112 }
    113 
    114 atf_init_test_cases() {
    115 	atf_add_test_case noargs_usage
    116 	atf_add_test_case showvalue
    117 	atf_add_test_case nflag
    118 	atf_add_test_case nonexistant_device
    119 }
    120