[libgpiod][PATCH v2 0/8] tools: tests: fix shellcheck warnings

[libgpiod][PATCH v2 0/8] tools: tests: fix shellcheck warnings

[Kent Gibson]

Following up on recent discussions, this series fixes all the warnings
detected by shellcheck.  The resulting tools test script is now clean,
at least from the perspective of shellcheck.

These fixes do not correct any known issue, other than shellcheck
reporting them as potential problems, the intent is to remove common
shell issues that may impact future changes, and to simplify checking
that any subsequent changes to the test script constitute "good" shell.

All the patches other than Patch 8 address a particular warning.
They are reasonably self-explanatory, but each commit comment includes a
link to the relevant warning(s) which describes the issue and the
appropriate corrections.

Patch 8 addresses a number of warnings, all related to word splitting
and globbing, and those constitute the bulk of the changes.
Some of the earlier patches also address trivial splitting/globbing
issues where that would prevent a line being modified multiple times.

Cheers,
Kent.

Changes v1 -> v2:
 - fix links in checkin comments
 - fix subject of patch 2

Kent Gibson (8):
  tools: tests: don't mix string and array
  tools: tests: declare and assign separately
  tools: tests: fix unused variables
  tools: tests: use read -r to avoid mangling backslashes
  tools: tests: don't use variables in printf format string
  tools: tests: check exit code directly
  tools: tests: shellcheck don't follow sourced file
  tools: tests: avoid splitting and globbing

 tools/gpio-tools-test.bash | 459 +++++++++++++++++++------------------
 1 file changed, 234 insertions(+), 225 deletions(-)

-- 
2.39.2

[libgpiod][PATCH v2 1/8] tools: tests: don't mix string and array

[Kent Gibson]

Fix shellcheck SC2145[1] - argument mixes string and array.

Separate the command from the array of arguments to avoid mixing.

[1] https://www.shellcheck.net/wiki/SC2145

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index 521556c..34ea744 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -174,18 +174,24 @@ gpiosim_cleanup() {
 run_tool() {
 	# Executables to test are expected to be in the same directory as the
 	# testing script.
-	output=$(timeout 10s $SOURCE_DIR/"$@" 2>&1)
+	cmd=$1
+	shift
+	output=$(timeout 10s "$SOURCE_DIR/$cmd" "$@" 2>&1)
 	status=$?
 }
 
 dut_run() {
-	coproc timeout 10s $SOURCE_DIR/"$@" 2>&1
+	cmd=$1
+	shift
+	coproc timeout 10s "$SOURCE_DIR/$cmd" "$@" 2>&1
 	DUT_PID=$COPROC_PID
 	read -t1 -n1 -u ${COPROC[0]} DUT_FIRST_CHAR
 }
 
 dut_run_redirect() {
-	coproc timeout 10s $SOURCE_DIR/"$@" > $SHUNIT_TMPDIR/$DUT_OUTPUT 2>&1
+	cmd=$1
+	shift
+	coproc timeout 10s "$SOURCE_DIR/$cmd" "$@" > "$SHUNIT_TMPDIR/$DUT_OUTPUT" 2>&1
 	DUT_PID=$COPROC_PID
 	# give the process time to spin up
 	# FIXME - find a better solution
-- 
2.39.2

[libgpiod][PATCH v2 2/8] tools: tests: declare and assign separately

[Kent Gibson]

Fix shellcheck SC2155[1] - declare and assign separately to avoid
masking return values.

[1] https://www.shellcheck.net/wiki/SC2155

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index 34ea744..6bbb06c 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -49,7 +49,8 @@ output_is() {
 
 num_lines_is() {
 	[ "$1" -eq "0" ] || [ -z "$output" ] && return 0
-	local NUM_LINES=$(echo "$output" | wc -l)
+	local NUM_LINES
+	NUM_LINES=$(echo "$output" | wc -l)
 	assertEquals " number of lines:" "$1" "$NUM_LINES"
 }
 
@@ -73,16 +74,18 @@ gpiosim_chip() {
 
 	for ARG in "$@"
 	do
-		local KEY=$(echo $ARG | cut -d"=" -f1)
-		local VAL=$(echo $ARG | cut -d"=" -f2)
+		local KEY VAL
+		KEY=$(echo "$ARG" | cut -d"=" -f1)
+		VAL=$(echo "$ARG" | cut -d"=" -f2)
 
 		if [ "$KEY" = "num_lines" ]
 		then
 			echo $VAL > $BANKPATH/num_lines
 		elif [ "$KEY" = "line_name" ]
 		then
-			local OFFSET=$(echo $VAL | cut -d":" -f1)
-			local LINENAME=$(echo $VAL | cut -d":" -f2)
+			local OFFSET LINENAME
+			OFFSET=$(echo "$VAL" | cut -d":" -f1)
+			LINENAME=$(echo "$VAL" | cut -d":" -f2)
 			local LINEPATH=$BANKPATH/line$OFFSET
 
 			mkdir -p $LINEPATH
@@ -92,10 +95,11 @@ gpiosim_chip() {
 
 	echo 1 > $DEVPATH/live
 
-	local chip_name=$(<$BANKPATH/chip_name)
-	GPIOSIM_CHIP_NAME[$1]=$chip_name
-	GPIOSIM_CHIP_PATH[$1]="/dev/$chip_name"
-	GPIOSIM_DEV_NAME[$1]=$(<$DEVPATH/dev_name)
+	local CHIP_NAME
+	CHIP_NAME=$(<"$BANKPATH/chip_name")
+	GPIOSIM_CHIP_NAME[$1]=$CHIP_NAME
+	GPIOSIM_CHIP_PATH[$1]="/dev/$CHIP_NAME"
+	GPIOSIM_DEV_NAME[$1]=$(<"$DEVPATH/dev_name")
 }
 
 gpiosim_chip_number() {
@@ -3044,14 +3048,16 @@ die() {
 # Must be done after we sources shunit2 as we need SHUNIT_VERSION to be set.
 oneTimeSetUp() {
 	test "$SHUNIT_VERSION" = "$MIN_SHUNIT_VERSION" && return 0
-	local FIRST=$(printf "$SHUNIT_VERSION\n$MIN_SHUNIT_VERSION\n" | sort -Vr | head -1)
+	local FIRST
+	FIRST=$(printf "$SHUNIT_VERSION\n$MIN_SHUNIT_VERSION\n" | sort -Vr | head -1)
 	test "$FIRST" = "$MIN_SHUNIT_VERSION" && \
 		die "minimum shunit version required is $MIN_SHUNIT_VERSION (current version is $SHUNIT_VERSION"
 }
 
 check_kernel() {
 	local REQUIRED=$1
-	local CURRENT=$(uname -r)
+	local CURRENT
+	CURRENT=$(uname -r)
 
 	SORTED=$(printf "$REQUIRED\n$CURRENT" | sort -V | head -n 1)
 
-- 
2.39.2

[libgpiod][PATCH v2 3/8] tools: tests: fix unused variables

[Kent Gibson]

Fix shellckeck SC2034[1] - foo appears unused.

Prefix intentionally unused variables with "_" and remove variables
not actually used.

[1] https://www.shellcheck.net/wiki/SC2034

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index 6bbb06c..b065296 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -146,7 +146,7 @@ gpiosim_wait_value() {
 	local CHIPNAME=${GPIOSIM_CHIP_NAME[$1]}
 	local PORT=$GPIOSIM_SYSFS/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/value
 
-	for i in {1..30}; do
+	for _i in {1..30}; do
 		[ "$(<$PORT)" = "$EXPECTED" ] && return
 		sleep 0.01
 	done
@@ -159,7 +159,6 @@ gpiosim_cleanup() {
 		local NAME=${GPIOSIM_APP_NAME}-$$-$CHIP
 
 		local DEVPATH=$GPIOSIM_CONFIGFS/$NAME
-		local BANKPATH=$DEVPATH/bank0
 
 		echo 0 > $DEVPATH/live
 		find "$DEVPATH" -type d -name hog -exec rmdir '{}' '+'
@@ -229,13 +228,13 @@ dut_readable() {
 }
 
 dut_flush() {
-	local JUNK
+	local _JUNK
 	lines=()
 	output=
 	unset DUT_FIRST_CHAR
-	while read -t 0 -u ${COPROC[0]} JUNK
+	while read -t 0 -u "${COPROC[0]}" _JUNK
 	do
-		read -t 0.1 -u ${COPROC[0]} JUNK || true
+		read -t 0.1 -u "${COPROC[0]}" _JUNK || true
 	done
 }
 
-- 
2.39.2

[libgpiod][PATCH v2 4/8] tools: tests: use read -r to avoid mangling backslashes

[Kent Gibson]

Fix shellcheck SC2162[1] - read without -r will mangle backslashes.

[1] https://www.shellcheck.net/wiki/SC2162

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index b065296..efe558b 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -188,7 +188,7 @@ dut_run() {
 	shift
 	coproc timeout 10s "$SOURCE_DIR/$cmd" "$@" 2>&1
 	DUT_PID=$COPROC_PID
-	read -t1 -n1 -u ${COPROC[0]} DUT_FIRST_CHAR
+	read -r -t1 -n1 -u "${COPROC[0]}" DUT_FIRST_CHAR
 }
 
 dut_run_redirect() {
@@ -211,7 +211,7 @@ dut_read_redirect() {
 dut_read() {
 	local LINE
 	lines=()
-	while read -t 0.2 -u ${COPROC[0]} LINE
+	while read -r -t 0.2 -u "${COPROC[0]}" LINE
 	do
 		if [ -n "$DUT_FIRST_CHAR" ]
 		then
@@ -234,7 +234,7 @@ dut_flush() {
 	unset DUT_FIRST_CHAR
 	while read -t 0 -u "${COPROC[0]}" _JUNK
 	do
-		read -t 0.1 -u "${COPROC[0]}" _JUNK || true
+		read -r -t 0.1 -u "${COPROC[0]}" _JUNK || true
 	done
 }
 
@@ -242,7 +242,7 @@ dut_flush() {
 dut_regex_match() {
 	PATTERN=$1
 
-	read -t 0.2 -u ${COPROC[0]} LINE || (echo Timeout && false)
+	read -r -t 0.2 -u "${COPROC[0]}" LINE || (echo Timeout && false)
 	if [ -n "$DUT_FIRST_CHAR" ]
 	then
 		LINE=${DUT_FIRST_CHAR}${LINE}
-- 
2.39.2

[libgpiod][PATCH v2 5/8] tools: tests: don't use variables in printf format string

[Kent Gibson]

Fix shellcheck SC2059[1] - don't use variables in the printf format
string.

[1] https://www.shellcheck.net/wiki/SC2059

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index efe558b..d9930f1 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -3048,7 +3048,7 @@ die() {
 oneTimeSetUp() {
 	test "$SHUNIT_VERSION" = "$MIN_SHUNIT_VERSION" && return 0
 	local FIRST
-	FIRST=$(printf "$SHUNIT_VERSION\n$MIN_SHUNIT_VERSION\n" | sort -Vr | head -1)
+	FIRST=$(printf "%s\n%s\n" "$SHUNIT_VERSION" "$MIN_SHUNIT_VERSION" | sort -Vr | head -1)
 	test "$FIRST" = "$MIN_SHUNIT_VERSION" && \
 		die "minimum shunit version required is $MIN_SHUNIT_VERSION (current version is $SHUNIT_VERSION"
 }
@@ -3058,7 +3058,7 @@ check_kernel() {
 	local CURRENT
 	CURRENT=$(uname -r)
 
-	SORTED=$(printf "$REQUIRED\n$CURRENT" | sort -V | head -n 1)
+	SORTED=$(printf "%s\n%s" "$REQUIRED" "$CURRENT" | sort -V | head -n 1)
 
 	if [ "$SORTED" != "$REQUIRED" ]
 	then
-- 
2.39.2

[libgpiod][PATCH v2 6/8] tools: tests: check exit code directly

[Kent Gibson]

Fix shellcheck SC2181[1] - check exit code directly.

[1] https://www.shellcheck.net/wiki/SC2181

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index d9930f1..83b05ec 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -3069,8 +3069,7 @@ check_kernel() {
 check_prog() {
 	local PROG=$1
 
-	which "$PROG" > /dev/null
-	if [ "$?" -ne "0" ]
+	if ! which "$PROG" > /dev/null
 	then
 		die "$PROG not found - needed to run the tests"
 	fi
-- 
2.39.2

[libgpiod][PATCH v2 7/8] tools: tests: shellcheck don't follow sourced file

[Kent Gibson]

Fix shellcheck SC1091 - not following.

Use a directive to prevent shellcheck complaining about sourcing
shunit2, which we don't care to check.

[1] https://www.shellcheck.net/wiki/SC1091

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index 83b05ec..4551dc2 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -3087,4 +3087,5 @@ modprobe gpio-sim || die "unable to load the gpio-sim module"
 mountpoint /sys/kernel/config/ > /dev/null 2> /dev/null || \
 	die "configfs not mounted at /sys/kernel/config/"
 
+# shellcheck source=/dev/null
 . shunit2
-- 
2.39.2

[libgpiod][PATCH v2 8/8] tools: tests: avoid splitting and globbing

[Kent Gibson]

Fix shellcheck SC2046[1], SC2068[2], SC2068[3] and SC2206[4], all of
which are related to avoiding word splitting and globbing.

[1] https://www.shellcheck.net/wiki/SC2046
[2] https://www.shellcheck.net/wiki/SC2068
[3] https://www.shellcheck.net/wiki/SC2086
[4] https://www.shellcheck.net/wiki/SC2206

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
 tools/gpio-tools-test.bash | 398 ++++++++++++++++++-------------------
 1 file changed, 198 insertions(+), 200 deletions(-)

diff --git a/tools/gpio-tools-test.bash b/tools/gpio-tools-test.bash
index 4551dc2..3b93388 100755
--- a/tools/gpio-tools-test.bash
+++ b/tools/gpio-tools-test.bash
@@ -14,7 +14,7 @@ DUT_OUTPUT=gpio-tools-test-output
 # once it exits as the COPROC_PID will be cleared.
 DUT_PID=""
 
-SOURCE_DIR="$(dirname ${BASH_SOURCE[0]})"
+SOURCE_DIR=$(dirname "${BASH_SOURCE[0]}")
 
 # mappings from local name to system chip name, path, dev name
 declare -A GPIOSIM_CHIP_NAME
@@ -70,7 +70,7 @@ gpiosim_chip() {
 	local DEVPATH=$GPIOSIM_CONFIGFS/$NAME
 	local BANKPATH=$DEVPATH/bank0
 
-	mkdir -p $BANKPATH
+	mkdir -p "$BANKPATH"
 
 	for ARG in "$@"
 	do
@@ -80,7 +80,7 @@ gpiosim_chip() {
 
 		if [ "$KEY" = "num_lines" ]
 		then
-			echo $VAL > $BANKPATH/num_lines
+			echo "$VAL" > "$BANKPATH/num_lines"
 		elif [ "$KEY" = "line_name" ]
 		then
 			local OFFSET LINENAME
@@ -88,12 +88,12 @@ gpiosim_chip() {
 			LINENAME=$(echo "$VAL" | cut -d":" -f2)
 			local LINEPATH=$BANKPATH/line$OFFSET
 
-			mkdir -p $LINEPATH
-			echo $LINENAME > $LINEPATH/name
+			mkdir -p "$LINEPATH"
+			echo "$LINENAME" > "$LINEPATH/name"
 		fi
 	done
 
-	echo 1 > $DEVPATH/live
+	echo 1 > "$DEVPATH/live"
 
 	local CHIP_NAME
 	CHIP_NAME=$(<"$BANKPATH/chip_name")
@@ -104,12 +104,12 @@ gpiosim_chip() {
 
 gpiosim_chip_number() {
 	local NAME=${GPIOSIM_CHIP_NAME[$1]}
-	echo ${NAME#"gpiochip"}
+	echo "${NAME#gpiochip}"
 }
 
 gpiosim_chip_symlink() {
 	GPIOSIM_CHIP_LINK="$2/${GPIOSIM_APP_NAME}-$$-lnk"
-	ln -s ${GPIOSIM_CHIP_PATH[$1]} "$GPIOSIM_CHIP_LINK"
+	ln -s "${GPIOSIM_CHIP_PATH[$1]}" "$GPIOSIM_CHIP_LINK"
 }
 
 gpiosim_chip_symlink_cleanup() {
@@ -126,7 +126,7 @@ gpiosim_set_pull() {
 	local DEVNAME=${GPIOSIM_DEV_NAME[$1]}
 	local CHIPNAME=${GPIOSIM_CHIP_NAME[$1]}
 
-	echo $PULL > $GPIOSIM_SYSFS/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/pull
+	echo "$PULL" > "$GPIOSIM_SYSFS/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/pull"
 }
 
 gpiosim_check_value() {
@@ -135,7 +135,7 @@ gpiosim_check_value() {
 	local DEVNAME=${GPIOSIM_DEV_NAME[$1]}
 	local CHIPNAME=${GPIOSIM_CHIP_NAME[$1]}
 
-	VAL=$(<$GPIOSIM_SYSFS/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/value)
+	VAL=$(<"$GPIOSIM_SYSFS/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/value")
 	[ "$VAL" = "$EXPECTED" ]
 }
 
@@ -147,20 +147,20 @@ gpiosim_wait_value() {
 	local PORT=$GPIOSIM_SYSFS/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/value
 
 	for _i in {1..30}; do
-		[ "$(<$PORT)" = "$EXPECTED" ] && return
+		[ "$(<"$PORT")" = "$EXPECTED" ] && return
 		sleep 0.01
 	done
 	return 1
 }
 
 gpiosim_cleanup() {
-	for CHIP in ${!GPIOSIM_CHIP_NAME[@]}
+	for CHIP in "${!GPIOSIM_CHIP_NAME[@]}"
 	do
 		local NAME=${GPIOSIM_APP_NAME}-$$-$CHIP
 
 		local DEVPATH=$GPIOSIM_CONFIGFS/$NAME
 
-		echo 0 > $DEVPATH/live
+		echo 0 > "$DEVPATH/live"
 		find "$DEVPATH" -type d -name hog -exec rmdir '{}' '+'
 		find "$DEVPATH" -type d -name "line*" -exec rmdir '{}' '+'
 		find "$DEVPATH" -type d -name "bank*" -exec rmdir '{}' '+'
@@ -202,9 +202,9 @@ dut_run_redirect() {
 }
 
 dut_read_redirect() {
-	output=$(<$SHUNIT_TMPDIR/$DUT_OUTPUT)
+	output=$(<"$SHUNIT_TMPDIR/$DUT_OUTPUT")
 	local ORIG_IFS="$IFS"
-	IFS=$'\n' lines=($output)
+	IFS=$'\n' mapfile -t lines <<< "$output"
 	IFS="$ORIG_IFS"
 }
 
@@ -220,11 +220,11 @@ dut_read() {
 		fi
 		lines+=("$LINE")
 	done
-	output="${lines[@]}"
+	output="${lines[*]}"
 }
 
 dut_readable() {
-	read -t 0 -u ${COPROC[0]} LINE
+	read -t 0 -u "${COPROC[0]}" LINE
 }
 
 dut_flush() {
@@ -253,17 +253,15 @@ dut_regex_match() {
 }
 
 dut_write() {
-	echo "$@" >&${COPROC[1]}
+	echo "$@" >&"${COPROC[1]}"
 }
 
 dut_kill() {
-	SIGNUM=$1
-
-	kill $SIGNUM $DUT_PID
+	kill "$@" "$DUT_PID"
 }
 
 dut_wait() {
-	wait $DUT_PID
+	wait "$DUT_PID"
 	export status=$?
 	unset DUT_PID
 }
@@ -271,10 +269,10 @@ dut_wait() {
 dut_cleanup() {
 	if [ -n "$DUT_PID" ]
 	then
-		kill -SIGTERM $DUT_PID 2> /dev/null
-		wait $DUT_PID || false
+		kill -SIGTERM "$DUT_PID" 2> /dev/null
+		wait "$DUT_PID" || false
 	fi
-	rm -f $SHUNIT_TMPDIR/$DUT_OUTPUT
+	rm -f "$SHUNIT_TMPDIR/$DUT_OUTPUT"
 }
 
 tearDown() {
@@ -283,7 +281,7 @@ tearDown() {
 }
 
 request_release_line() {
-	$SOURCE_DIR/gpioget -c "$@" >/dev/null
+	"$SOURCE_DIR/gpioget" -c "$@" >/dev/null
 }
 
 #
@@ -332,21 +330,21 @@ test_gpiodetect_a_chip() {
 	local sim2dev=${GPIOSIM_DEV_NAME[sim2]}
 
 	# by name
-	run_tool gpiodetect $sim0
+	run_tool gpiodetect "$sim0"
 
 	output_regex_match "$sim0 \[${sim0dev}[-:]node0\] \(4 lines\)"
 	num_lines_is 1
 	status_is 0
 
 	# by path
-	run_tool gpiodetect ${GPIOSIM_CHIP_PATH[sim1]}
+	run_tool gpiodetect "${GPIOSIM_CHIP_PATH[sim1]}"
 
 	output_regex_match "$sim1 \[${sim1dev}[-:]node0\] \(8 lines\)"
 	num_lines_is 1
 	status_is 0
 
 	# by number
-	run_tool gpiodetect $(gpiosim_chip_number sim2)
+	run_tool gpiodetect "$(gpiosim_chip_number sim2)"
 
 	output_regex_match "$sim2 \[${sim2dev}[-:]node0\] \(16 lines\)"
 	num_lines_is 1
@@ -354,7 +352,7 @@ test_gpiodetect_a_chip() {
 
 	# by symlink
 	gpiosim_chip_symlink sim2 .
-	run_tool gpiodetect $GPIOSIM_CHIP_LINK
+	run_tool gpiodetect "$GPIOSIM_CHIP_LINK"
 
 	output_regex_match "$sim2 \[${sim2dev}[-:]node0\] \(16 lines\)"
 	num_lines_is 1
@@ -373,7 +371,7 @@ test_gpiodetect_multiple_chips() {
 	local sim1dev=${GPIOSIM_DEV_NAME[sim1]}
 	local sim2dev=${GPIOSIM_DEV_NAME[sim2]}
 
-	run_tool gpiodetect $sim0 $sim1 $sim2
+	run_tool gpiodetect "$sim0" "$sim1" "$sim2"
 
 	output_regex_match "$sim0 \[${sim0dev}[-:]node0\] \(4 lines\)"
 	output_regex_match "$sim1 \[${sim1dev}[-:]node0\] \(8 lines\)"
@@ -441,7 +439,7 @@ test_gpioinfo_a_chip() {
 	local sim1=${GPIOSIM_CHIP_NAME[sim1]}
 
 	# by name
-	run_tool gpioinfo --chip $sim1
+	run_tool gpioinfo --chip "$sim1"
 
 	output_contains_line "$sim1 - 4 lines:"
 	output_regex_match "\\s+line\\s+0:\\s+unnamed\\s+input"
@@ -452,7 +450,7 @@ test_gpioinfo_a_chip() {
 	status_is 0
 
 	# by path
-	run_tool gpioinfo --chip $sim1
+	run_tool gpioinfo --chip "$sim1"
 
 	output_contains_line "$sim1 - 4 lines:"
 	output_regex_match "\\s+line\\s+0:\\s+unnamed\\s+input"
@@ -463,7 +461,7 @@ test_gpioinfo_a_chip() {
 	status_is 0
 
 	# by number
-	run_tool gpioinfo --chip $sim1
+	run_tool gpioinfo --chip "$sim1"
 
 	output_contains_line "$sim1 - 4 lines:"
 	output_regex_match "\\s+line\\s+0:\\s+unnamed\\s+input"
@@ -475,7 +473,7 @@ test_gpioinfo_a_chip() {
 
 	# by symlink
 	gpiosim_chip_symlink sim1 .
-	run_tool gpioinfo --chip $GPIOSIM_CHIP_LINK
+	run_tool gpioinfo --chip "$GPIOSIM_CHIP_LINK"
 
 	output_contains_line "$sim1 - 4 lines:"
 	output_regex_match "\\s+line\\s+0:\\s+unnamed\\s+input"
@@ -494,7 +492,7 @@ test_gpioinfo_a_line() {
 	local sim1=${GPIOSIM_CHIP_NAME[sim1]}
 
 	# by offset
-	run_tool gpioinfo --chip $sim1 2
+	run_tool gpioinfo --chip "$sim1" 2
 
 	output_regex_match "$sim1 2\\s+\"bar\"\\s+input"
 	num_lines_is 1
@@ -508,14 +506,14 @@ test_gpioinfo_a_line() {
 	status_is 0
 
 	# by chip and name
-	run_tool gpioinfo --chip $sim1 2
+	run_tool gpioinfo --chip "$sim1" 2
 
 	output_regex_match "$sim1 2\\s+\"bar\"\\s+input"
 	num_lines_is 1
 	status_is 0
 
 	# unquoted
-	run_tool gpioinfo --unquoted --chip $sim1 2
+	run_tool gpioinfo --unquoted --chip "$sim1" 2
 
 	output_regex_match "$sim1 2\\s+bar\\s+input"
 	num_lines_is 1
@@ -547,7 +545,7 @@ test_gpioinfo_multiple_lines() {
 	local sim1=${GPIOSIM_CHIP_NAME[sim1]}
 
 	# by offset
-	run_tool gpioinfo --chip $sim1 1 2
+	run_tool gpioinfo --chip "$sim1" 1 2
 
 	output_regex_match "$sim1 1\\s+unnamed\\s+input"
 	output_regex_match "$sim1 2\\s+\"baz\"\\s+input"
@@ -563,7 +561,7 @@ test_gpioinfo_multiple_lines() {
 	status_is 0
 
 	# by name and offset
-	run_tool gpioinfo --chip $sim0 bar 3
+	run_tool gpioinfo --chip "$sim0" bar 3
 
 	output_regex_match "$sim0 5\\s+\"bar\"\\s+input"
 	output_regex_match "$sim0 3\\s+unnamed\\s+input"
@@ -652,7 +650,7 @@ test_gpioinfo_with_same_line_twice() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# by offset
-	run_tool gpioinfo --chip $sim0 1 1
+	run_tool gpioinfo --chip "$sim0" 1 1
 
 	output_regex_match "$sim0 1\\s+\"foo\"\\s+input"
 	output_regex_match ".*lines '1' and '1' are the same line"
@@ -668,7 +666,7 @@ test_gpioinfo_with_same_line_twice() {
 	status_is 1
 
 	# by name and offset
-	run_tool gpioinfo --chip $sim0 foo 1
+	run_tool gpioinfo --chip "$sim0" foo 1
 
 	output_regex_match "$sim0 1\\s+\"foo\"\\s+input"
 	output_regex_match ".*lines 'foo' and '1' are the same line"
@@ -703,7 +701,7 @@ test_gpioinfo_with_lines_strictly_by_name() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# first by offset (to show offsets match first)
-	run_tool gpioinfo --chip $sim0 1 6
+	run_tool gpioinfo --chip "$sim0" 1 6
 
 	output_regex_match "$sim0 1\\s+\"6\"\\s+input"
 	output_regex_match "$sim0 6\\s+\"1\"\\s+input"
@@ -711,7 +709,7 @@ test_gpioinfo_with_lines_strictly_by_name() {
 	status_is 0
 
 	# then strictly by name
-	run_tool gpioinfo --by-name --chip $sim0 1
+	run_tool gpioinfo --by-name --chip "$sim0" 1
 
 	output_regex_match "$sim0 6\\s+\"1\"\\s+input"
 	num_lines_is 1
@@ -734,7 +732,7 @@ test_gpioinfo_with_nonexistent_line() {
 	output_regex_match ".*cannot find line 'nonexistent-line'"
 	status_is 1
 
-	run_tool gpioinfo --chip ${GPIOSIM_CHIP_NAME[sim0]} nonexistent-line
+	run_tool gpioinfo --chip "${GPIOSIM_CHIP_NAME[sim0]}" nonexistent-line
 
 	output_regex_match ".*cannot find line 'nonexistent-line'"
 	status_is 1
@@ -745,7 +743,7 @@ test_gpioinfo_with_offset_out_of_range() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioinfo --chip $sim0 0 1 2 3 4 5
+	run_tool gpioinfo --chip "$sim0" 0 1 2 3 4 5
 
 	output_regex_match "$sim0 0\\s+unnamed\\s+input"
 	output_regex_match "$sim0 1\\s+unnamed\\s+input"
@@ -782,12 +780,12 @@ test_gpioget_by_offset() {
 
 	gpiosim_set_pull sim0 1 pull-up
 
-	run_tool gpioget --chip ${GPIOSIM_CHIP_NAME[sim0]} 1
+	run_tool gpioget --chip "${GPIOSIM_CHIP_NAME[sim0]}" 1
 
 	output_is "\"1\"=active"
 	status_is 0
 
-	run_tool gpioget --unquoted --chip ${GPIOSIM_CHIP_NAME[sim0]} 1
+	run_tool gpioget --unquoted --chip "${GPIOSIM_CHIP_NAME[sim0]}" 1
 
 	output_is "1=active"
 	status_is 0
@@ -799,7 +797,7 @@ test_gpioget_by_symlink() {
 
 	gpiosim_set_pull sim0 1 pull-up
 
-	run_tool gpioget --chip $GPIOSIM_CHIP_LINK 1
+	run_tool gpioget --chip "$GPIOSIM_CHIP_LINK" 1
 
 	output_is "\"1\"=active"
 	status_is 0
@@ -811,12 +809,12 @@ test_gpioget_by_chip_and_name() {
 
 	gpiosim_set_pull sim1 3 pull-up
 
-	run_tool gpioget --chip ${GPIOSIM_CHIP_NAME[sim1]} foo
+	run_tool gpioget --chip "${GPIOSIM_CHIP_NAME[sim1]}" foo
 
 	output_is "\"foo\"=active"
 	status_is 0
 
-	run_tool gpioget --unquoted --chip ${GPIOSIM_CHIP_NAME[sim1]} foo
+	run_tool gpioget --unquoted --chip "${GPIOSIM_CHIP_NAME[sim1]}" foo
 
 	output_is "foo=active"
 	status_is 0
@@ -845,7 +843,7 @@ test_gpioget_multiple_lines() {
 	gpiosim_set_pull sim0 5 pull-up
 	gpiosim_set_pull sim0 7 pull-up
 
-	run_tool gpioget --unquoted --chip ${GPIOSIM_CHIP_NAME[sim0]} 0 1 2 3 4 5 6 7
+	run_tool gpioget --unquoted --chip "${GPIOSIM_CHIP_NAME[sim0]}" 0 1 2 3 4 5 6 7
 
 	output_is \
 "0=inactive 1=inactive 2=active 3=active 4=inactive 5=active 6=inactive 7=active"
@@ -861,7 +859,7 @@ test_gpioget_multiple_lines_by_name_and_offset() {
 	gpiosim_set_pull sim0 4 pull-up
 	gpiosim_set_pull sim0 6 pull-up
 
-	run_tool gpioget --chip $sim0 0 foo 4 bar
+	run_tool gpioget --chip "$sim0" 0 foo 4 bar
 
 	output_is "\"0\"=inactive \"foo\"=active \"4\"=active \"bar\"=active"
 	status_is 0
@@ -890,7 +888,7 @@ test_gpioget_with_numeric_values() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioget --numeric --chip $sim0 0 1 2 3 4 5 6 7
+	run_tool gpioget --numeric --chip "$sim0" 0 1 2 3 4 5 6 7
 
 	output_is "0 0 1 1 0 1 0 1"
 	status_is 0
@@ -906,7 +904,7 @@ test_gpioget_with_active_low() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioget --active-low --unquoted --chip $sim0 0 1 2 3 4 5 6 7
+	run_tool gpioget --active-low --unquoted --chip "$sim0" 0 1 2 3 4 5 6 7
 
 	output_is \
 "0=active 1=active 2=inactive 3=inactive 4=active 5=inactive 6=active 7=inactive"
@@ -937,7 +935,7 @@ test_gpioget_with_pull_up() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioget --bias=pull-up --unquoted --chip $sim0 0 1 2 3 4 5 6 7
+	run_tool gpioget --bias=pull-up --unquoted --chip "$sim0" 0 1 2 3 4 5 6 7
 
 	output_is \
 "0=active 1=active 2=active 3=active 4=active 5=active 6=active 7=active"
@@ -954,7 +952,7 @@ test_gpioget_with_pull_down() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioget --bias=pull-down --unquoted --chip $sim0 0 1 2 3 4 5 6 7
+	run_tool gpioget --bias=pull-down --unquoted --chip "$sim0" 0 1 2 3 4 5 6 7
 
 	output_is \
 "0=inactive 1=inactive 2=inactive 3=inactive 4=inactive 5=inactive 6=inactive 7=inactive"
@@ -1026,12 +1024,12 @@ test_gpioget_with_lines_by_offset() {
 	gpiosim_set_pull sim0 1 pull-up
 	gpiosim_set_pull sim0 6 pull-down
 
-	run_tool gpioget --chip ${GPIOSIM_CHIP_NAME[sim0]} 1 6
+	run_tool gpioget --chip "${GPIOSIM_CHIP_NAME[sim0]}" 1 6
 
 	output_is "\"1\"=active \"6\"=inactive"
 	status_is 0
 
-	run_tool gpioget --unquoted --chip ${GPIOSIM_CHIP_NAME[sim0]} 1 6
+	run_tool gpioget --unquoted --chip "${GPIOSIM_CHIP_NAME[sim0]}" 1 6
 
 	output_is "1=active 6=inactive"
 	status_is 0
@@ -1045,12 +1043,12 @@ test_gpioget_with_lines_strictly_by_name() {
 	gpiosim_set_pull sim0 1 pull-up
 	gpiosim_set_pull sim0 6 pull-down
 
-	run_tool gpioget --by-name --chip ${GPIOSIM_CHIP_NAME[sim0]} 1 6
+	run_tool gpioget --by-name --chip "${GPIOSIM_CHIP_NAME[sim0]}" 1 6
 
 	output_is "\"1\"=inactive \"6\"=active"
 	status_is 0
 
-	run_tool gpioget --by-name --unquoted --chip ${GPIOSIM_CHIP_NAME[sim0]} 1 6
+	run_tool gpioget --by-name --unquoted --chip "${GPIOSIM_CHIP_NAME[sim0]}" 1 6
 
 	output_is "1=inactive 6=active"
 	status_is 0
@@ -1066,7 +1064,7 @@ test_gpioget_with_no_arguments() {
 test_gpioget_with_chip_but_no_line_specified() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpioget --chip ${GPIOSIM_CHIP_NAME[sim0]}
+	run_tool gpioget --chip "${GPIOSIM_CHIP_NAME[sim0]}"
 
 	output_regex_match ".*at least one GPIO line must be specified"
 	status_is 1
@@ -1076,7 +1074,7 @@ test_gpioget_with_offset_out_of_range() {
 	gpiosim_chip sim0 num_lines=4
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioget --chip $sim0 0 1 2 3 4 5
+	run_tool gpioget --chip "$sim0" 0 1 2 3 4 5
 
 	output_regex_match ".*offset 4 is out of range on chip '$sim0'"
 	output_regex_match ".*offset 5 is out of range on chip '$sim0'"
@@ -1095,7 +1093,7 @@ test_gpioget_with_same_line_twice() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# by offset
-	run_tool gpioget --chip $sim0 0 0
+	run_tool gpioget --chip "$sim0" 0 0
 
 	output_regex_match ".*lines '0' and '0' are the same line"
 	status_is 1
@@ -1107,19 +1105,19 @@ test_gpioget_with_same_line_twice() {
 	status_is 1
 
 	# by chip and name
-	run_tool gpioget --chip $sim0 foo foo
+	run_tool gpioget --chip "$sim0" foo foo
 
 	output_regex_match ".*lines 'foo' and 'foo' are the same line"
 	status_is 1
 
 	# by name and offset
-	run_tool gpioget --chip $sim0 foo 1
+	run_tool gpioget --chip "$sim0" foo 1
 
 	output_regex_match ".*lines 'foo' and '1' are the same line"
 	status_is 1
 
 	# by offset and name
-	run_tool gpioget --chip $sim0 1 foo
+	run_tool gpioget --chip "$sim0" 1 foo
 
 	output_regex_match ".*lines '1' and 'foo' are the same line"
 	status_is 1
@@ -1128,7 +1126,7 @@ test_gpioget_with_same_line_twice() {
 test_gpioget_with_invalid_bias() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpioget --bias=bad --chip ${GPIOSIM_CHIP_NAME[sim0]} 0 1
+	run_tool gpioget --bias=bad --chip "${GPIOSIM_CHIP_NAME[sim0]}" 0 1
 
 	output_regex_match ".*invalid bias.*"
 	status_is 1
@@ -1137,7 +1135,7 @@ test_gpioget_with_invalid_bias() {
 test_gpioget_with_invalid_hold_period() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpioget --hold-period=bad --chip ${GPIOSIM_CHIP_NAME[sim0]} 0
+	run_tool gpioget --hold-period=bad --chip "${GPIOSIM_CHIP_NAME[sim0]}" 0
 
 	output_regex_match ".*invalid period.*"
 	status_is 1
@@ -1158,7 +1156,7 @@ test_gpioset_by_name() {
 test_gpioset_by_offset() {
 	gpiosim_chip sim0 num_lines=8
 
-	dut_run gpioset --banner --chip ${GPIOSIM_CHIP_NAME[sim0]} 1=1
+	dut_run gpioset --banner --chip "${GPIOSIM_CHIP_NAME[sim0]}" 1=1
 
 	gpiosim_check_value sim0 1 1
 }
@@ -1167,7 +1165,7 @@ test_gpioset_by_symlink() {
 	gpiosim_chip sim0 num_lines=8
 	gpiosim_chip_symlink sim0 .
 
-	dut_run gpioset --banner --chip $GPIOSIM_CHIP_LINK 1=1
+	dut_run gpioset --banner --chip "$GPIOSIM_CHIP_LINK" 1=1
 
 	gpiosim_check_value sim0 1 1
 }
@@ -1176,7 +1174,7 @@ test_gpioset_by_chip_and_name() {
 	gpiosim_chip sim0 num_lines=8 line_name=1:foo
 	gpiosim_chip sim1 num_lines=8 line_name=3:foo
 
-	dut_run gpioset --banner --chip ${GPIOSIM_CHIP_NAME[sim1]} foo=1
+	dut_run gpioset --banner --chip "${GPIOSIM_CHIP_NAME[sim1]}" foo=1
 
 	gpiosim_check_value sim1 3 1
 }
@@ -1198,7 +1196,7 @@ test_gpioset_multiple_lines() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpioset --banner --chip $sim0 0=0 1=0 2=1 3=1 4=1 5=1 6=0 7=1
+	dut_run gpioset --banner --chip "$sim0" 0=0 1=0 2=1 3=1 4=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 0 0
 	gpiosim_check_value sim0 1 0
@@ -1213,7 +1211,7 @@ test_gpioset_multiple_lines() {
 test_gpioset_multiple_lines_by_name_and_offset() {
 	gpiosim_chip sim0 num_lines=4 line_name=1:foo line_name=2:bar
 
-	dut_run gpioset --banner --chip ${GPIOSIM_CHIP_NAME[sim0]} 0=1 foo=1 bar=1 3=1
+	dut_run gpioset --banner --chip "${GPIOSIM_CHIP_NAME[sim0]}" 0=1 foo=1 bar=1 3=1
 
 	gpiosim_check_value sim0 0 1
 	gpiosim_check_value sim0 1 1
@@ -1238,7 +1236,7 @@ test_gpioset_with_active_low() {
 	gpiosim_chip sim0 num_lines=8
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpioset --banner --active-low -c $sim0 \
+	dut_run gpioset --banner --active-low -c "$sim0" \
 		0=0 1=0 2=1 3=1 4=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 0 1
@@ -1272,7 +1270,7 @@ test_gpioset_with_push_pull() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpioset --banner --drive=push-pull --chip $sim0 \
+	dut_run gpioset --banner --drive=push-pull --chip "$sim0" \
 		0=0 1=0 2=1 3=1 4=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 0 0
@@ -1295,7 +1293,7 @@ test_gpioset_with_open_drain() {
 	gpiosim_set_pull sim0 5 pull-up
 	gpiosim_set_pull sim0 7 pull-up
 
-	dut_run gpioset --banner --drive=open-drain --chip $sim0 \
+	dut_run gpioset --banner --drive=open-drain --chip "$sim0" \
 		0=0 1=0 2=1 3=1 4=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 0 0
@@ -1318,7 +1316,7 @@ test_gpioset_with_open_source() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpioset --banner --drive=open-source --chip $sim0 \
+	dut_run gpioset --banner --drive=open-source --chip "$sim0" \
 		0=0 1=0 2=1 3=0 4=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 0 0
@@ -1337,7 +1335,7 @@ test_gpioset_with_pull_up() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpioset --banner --bias=pull-up --drive=open-drain \
-		--chip $sim0 0=0 1=0 2=1 3=0 4=1 5=1 6=0 7=1
+		--chip "$sim0" 0=0 1=0 2=1 3=0 4=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 0 0
 	gpiosim_check_value sim0 1 0
@@ -1355,7 +1353,7 @@ test_gpioset_with_pull_down() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpioset --banner --bias=pull-down --drive=open-source \
-		--chip $sim0 0=0 1=0 2=1 3=0 4=1 5=1 6=0 7=1
+		--chip "$sim0" 0=0 1=0 2=1 3=0 4=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 0 0
 	gpiosim_check_value sim0 1 0
@@ -1381,7 +1379,7 @@ test_gpioset_with_value_variants() {
 	gpiosim_set_pull sim0 6 pull-up
 	gpiosim_set_pull sim0 7 pull-down
 
-	dut_run gpioset --banner --chip $sim0 0=0 1=1 2=active \
+	dut_run gpioset --banner --chip "$sim0" 0=0 1=1 2=active \
 		3=inactive 4=on 5=off 6=false 7=true
 
 	gpiosim_check_value sim0 0 0
@@ -1401,7 +1399,7 @@ test_gpioset_with_hold_period() {
 
 	gpiosim_set_pull sim0 5 pull-up
 
-	dut_run gpioset --banner --hold-period=1200ms -t0 --chip $sim0 0=1 5=0 7=1
+	dut_run gpioset --banner --hold-period=1200ms -t0 --chip "$sim0" 0=1 5=0 7=1
 
 	gpiosim_check_value sim0 0 1
 	gpiosim_check_value sim0 5 0
@@ -1417,7 +1415,7 @@ test_gpioset_interactive_exit() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpioset --interactive --chip $sim0 1=0 2=1 5=1 6=0 7=1
+	dut_run gpioset --interactive --chip "$sim0" 1=0 2=1 5=1 6=0 7=1
 
 	gpiosim_check_value sim0 1 0
 	gpiosim_check_value sim0 2 1
@@ -1656,7 +1654,7 @@ test_gpioset_with_lines_by_offset() {
 	gpiosim_set_pull sim0 1 pull-down
 	gpiosim_set_pull sim0 6 pull-up
 
-	dut_run gpioset --banner --chip ${GPIOSIM_CHIP_NAME[sim0]} 6=1 1=0
+	dut_run gpioset --banner --chip "${GPIOSIM_CHIP_NAME[sim0]}" 6=1 1=0
 
 	gpiosim_check_value sim0 1 0
 	gpiosim_check_value sim0 6 1
@@ -1670,7 +1668,7 @@ test_gpioset_with_lines_strictly_by_name() {
 	gpiosim_set_pull sim0 1 pull-down
 	gpiosim_set_pull sim0 6 pull-up
 
-	dut_run gpioset --banner --by-name --chip ${GPIOSIM_CHIP_NAME[sim0]} 6=1 1=0
+	dut_run gpioset --banner --by-name --chip "${GPIOSIM_CHIP_NAME[sim0]}" 6=1 1=0
 
 	gpiosim_check_value sim0 1 1
 	gpiosim_check_value sim0 6 0
@@ -1708,7 +1706,7 @@ test_gpioset_with_no_arguments() {
 test_gpioset_with_chip_but_no_line_specified() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpioset --chip ${GPIOSIM_CHIP_NAME[sim0]}
+	run_tool gpioset --chip "${GPIOSIM_CHIP_NAME[sim0]}"
 
 	output_regex_match ".*at least one GPIO line value must be specified"
 	status_is 1
@@ -1719,7 +1717,7 @@ test_gpioset_with_offset_out_of_range() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioset --chip $sim0 0=1 1=1 2=1 3=1 4=1 5=1
+	run_tool gpioset --chip "$sim0" 0=1 1=1 2=1 3=1 4=1 5=1
 
 	output_regex_match ".*offset 4 is out of range on chip '$sim0'"
 	output_regex_match ".*offset 5 is out of range on chip '$sim0'"
@@ -1731,7 +1729,7 @@ test_gpioset_with_invalid_hold_period() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioset --hold-period=bad --chip $sim0 0=1
+	run_tool gpioset --hold-period=bad --chip "$sim0" 0=1
 
 	output_regex_match ".*invalid period.*"
 	status_is 1
@@ -1743,13 +1741,13 @@ test_gpioset_with_invalid_value() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# by name
-	run_tool gpioset --chip $sim0 0=c
+	run_tool gpioset --chip "$sim0" 0=c
 
 	output_regex_match ".*invalid line value.*"
 	status_is 1
 
 	# by value
-	run_tool gpioset --chip $sim0 0=3
+	run_tool gpioset --chip "$sim0" 0=3
 
 	output_regex_match ".*invalid line value.*"
 	status_is 1
@@ -1758,7 +1756,7 @@ test_gpioset_with_invalid_value() {
 test_gpioset_with_invalid_offset() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpioset --chip ${GPIOSIM_CHIP_NAME[sim0]} 4000000000=0
+	run_tool gpioset --chip "${GPIOSIM_CHIP_NAME[sim0]}" 4000000000=0
 
 	output_regex_match ".*cannot find line '4000000000'"
 	status_is 1
@@ -1767,7 +1765,7 @@ test_gpioset_with_invalid_offset() {
 test_gpioset_with_invalid_bias() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpioset --bias=bad --chip ${GPIOSIM_CHIP_NAME[sim0]} 0=1 1=1
+	run_tool gpioset --bias=bad --chip "${GPIOSIM_CHIP_NAME[sim0]}" 0=1 1=1
 
 	output_regex_match ".*invalid bias.*"
 	status_is 1
@@ -1776,7 +1774,7 @@ test_gpioset_with_invalid_bias() {
 test_gpioset_with_invalid_drive() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpioset --drive=bad --chip ${GPIOSIM_CHIP_NAME[sim0]} 0=1 1=1
+	run_tool gpioset --drive=bad --chip "${GPIOSIM_CHIP_NAME[sim0]}" 0=1 1=1
 
 	output_regex_match ".*invalid drive.*"
 	status_is 1
@@ -1787,7 +1785,7 @@ test_gpioset_with_interactive_and_toggle() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpioset --interactive --toggle 1s --chip $sim0 0=1
+	run_tool gpioset --interactive --toggle 1s --chip "$sim0" 0=1
 
 	output_regex_match ".*can't combine interactive with toggle"
 	status_is 1
@@ -1806,25 +1804,25 @@ test_gpioset_with_same_line_twice() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# by offset
-	run_tool gpioset --chip $sim0 0=1 0=1
+	run_tool gpioset --chip "$sim0" 0=1 0=1
 
 	output_regex_match ".*lines '0' and '0' are the same line"
 	status_is 1
 
 	# by name
-	run_tool gpioset --chip $sim0 foo=1 foo=1
+	run_tool gpioset --chip "$sim0" foo=1 foo=1
 
 	output_regex_match ".*lines 'foo' and 'foo' are the same line"
 	status_is 1
 
 	# by name and offset
-	run_tool gpioset --chip $sim0 foo=1 1=1
+	run_tool gpioset --chip "$sim0" foo=1 1=1
 
 	output_regex_match ".*lines 'foo' and '1' are the same line"
 	status_is 1
 
 	# by offset and name
-	run_tool gpioset --chip $sim0 1=1 foo=1
+	run_tool gpioset --chip "$sim0" 1=1 foo=1
 
 	output_regex_match ".*lines '1' and 'foo' are the same line"
 	status_is 1
@@ -1856,7 +1854,7 @@ test_gpiomon_by_offset() {
 
 	gpiosim_set_pull sim0 4 pull-up
 
-	dut_run gpiomon --banner --edges=rising --chip $sim0 4
+	dut_run gpiomon --banner --edges=rising --chip "$sim0" 4
 	dut_regex_match "Monitoring line .*"
 
 	gpiosim_set_pull sim0 4 pull-down
@@ -1874,7 +1872,7 @@ test_gpiomon_by_symlink() {
 
 	gpiosim_set_pull sim0 4 pull-up
 
-	dut_run gpiomon --banner --edges=rising --chip $GPIOSIM_CHIP_LINK 4
+	dut_run gpiomon --banner --edges=rising --chip "$GPIOSIM_CHIP_LINK" 4
 	dut_regex_match "Monitoring line .*"
 
 	gpiosim_set_pull sim0 4 pull-down
@@ -1893,7 +1891,7 @@ test_gpiomon_by_chip_and_name() {
 
 	gpiosim_set_pull sim1 0 pull-up
 
-	dut_run gpiomon --banner --edges=rising --chip $sim1 foo
+	dut_run gpiomon --banner --edges=rising --chip "$sim1" foo
 	dut_regex_match "Monitoring line .*"
 
 	gpiosim_set_pull sim1 2 pull-down
@@ -1925,7 +1923,7 @@ test_gpiomon_rising_edge() {
 
 	gpiosim_set_pull sim0 4 pull-up
 
-	dut_run gpiomon --banner --edges=rising --chip $sim0 4
+	dut_run gpiomon --banner --edges=rising --chip "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-down
@@ -1941,7 +1939,7 @@ test_gpiomon_falling_edge() {
 
 	gpiosim_set_pull sim0 4 pull-down
 
-	dut_run gpiomon --banner --edges=falling --chip $sim0 4
+	dut_run gpiomon --banner --edges=falling --chip "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -1955,7 +1953,7 @@ test_gpiomon_both_edges() {
 	gpiosim_chip sim0 num_lines=8
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner --edges=both --chip $sim0 4
+	dut_run gpiomon --banner --edges=both --chip "$sim0" 4
 	dut_regex_match "Monitoring line .*"
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -1971,7 +1969,7 @@ test_gpiomon_with_pull_up() {
 
 	gpiosim_set_pull sim0 4 pull-down
 
-	dut_run gpiomon --banner --bias=pull-up --chip $sim0 4
+	dut_run gpiomon --banner --bias=pull-up --chip "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-down
@@ -1986,7 +1984,7 @@ test_gpiomon_with_pull_down() {
 
 	gpiosim_set_pull sim0 4 pull-up
 
-	dut_run gpiomon --banner --bias=pull-down --chip $sim0 4
+	dut_run gpiomon --banner --bias=pull-down --chip "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2002,7 +2000,7 @@ test_gpiomon_with_active_low() {
 
 	gpiosim_set_pull sim0 4 pull-up
 
-	dut_run gpiomon --banner --active-low --chip $sim0 4
+	dut_run gpiomon --banner --active-low --chip "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-down
@@ -2035,7 +2033,7 @@ test_gpiomon_with_quiet_mode() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner --edges=rising --quiet --chip $sim0 4
+	dut_run gpiomon --banner --edges=rising --quiet --chip "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2063,7 +2061,7 @@ test_gpiomon_with_num_events() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# redirect, as gpiomon exits after 4 events
-	dut_run_redirect gpiomon --num-events=4 --chip $sim0 4
+	dut_run_redirect gpiomon --num-events=4 --chip "$sim0" 4
 
 	gpiosim_set_pull sim0 4 pull-up
 	sleep 0.01
@@ -2107,7 +2105,7 @@ test_gpiomon_with_idle_timeout() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# redirect, as gpiomon exits
-	dut_run_redirect gpiomon --idle-timeout 10ms --chip $sim0 4
+	dut_run_redirect gpiomon --idle-timeout 10ms --chip "$sim0" 4
 
 	dut_wait
 	status_is 0
@@ -2120,7 +2118,7 @@ test_gpiomon_multiple_lines() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner --format=%o --chip $sim0 1 3 2 5 4
+	dut_run gpiomon --banner --format=%o --chip "$sim0" 1 3 2 5 4
 	dut_regex_match "Monitoring lines .*"
 
 	gpiosim_set_pull sim0 2 pull-up
@@ -2138,7 +2136,7 @@ test_gpiomon_multiple_lines_by_name_and_offset() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner --format=%o --chip $sim0 foo bar 3
+	dut_run gpiomon --banner --format=%o --chip "$sim0" foo bar 3
 	dut_regex_match "Monitoring lines .*"
 
 	gpiosim_set_pull sim0 2 pull-up
@@ -2173,7 +2171,7 @@ test_gpiomon_exit_after_SIGINT() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner --chip $sim0 4
+	dut_run gpiomon --banner --chip "$sim0" 4
 	dut_regex_match "Monitoring line .*"
 
 	dut_kill -SIGINT
@@ -2187,7 +2185,7 @@ test_gpiomon_exit_after_SIGTERM() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner --chip $sim0 4
+	dut_run gpiomon --banner --chip "$sim0" 4
 	dut_regex_match "Monitoring line .*"
 
 	dut_kill -SIGTERM
@@ -2209,7 +2207,7 @@ test_gpiomon_with_same_line_twice() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# by offset
-	run_tool gpiomon --chip $sim0 0 0
+	run_tool gpiomon --chip "$sim0" 0 0
 
 	output_regex_match ".*lines '0' and '0' are the same line"
 	status_is 1
@@ -2221,7 +2219,7 @@ test_gpiomon_with_same_line_twice() {
 	status_is 1
 
 	# by name and offset
-	run_tool gpiomon --chip $sim0 1 foo
+	run_tool gpiomon --chip "$sim0" 1 foo
 
 	output_regex_match ".*lines '1' and 'foo' are the same line"
 	status_is 1
@@ -2248,7 +2246,7 @@ test_gpiomon_with_lines_by_offset() {
 
 	gpiosim_set_pull sim0 1 pull-up
 
-	dut_run gpiomon --banner --chip $sim0 6 1
+	dut_run gpiomon --banner --chip "$sim0" 6 1
 	dut_flush
 
 	gpiosim_set_pull sim0 1 pull-down
@@ -2275,7 +2273,7 @@ test_gpiomon_with_lines_strictly_by_name() {
 
 	gpiosim_set_pull sim0 1 pull-up
 
-	dut_run gpiomon --banner --by-name --chip $sim0 42 13
+	dut_run gpiomon --banner --by-name --chip "$sim0" 42 13
 	dut_flush
 
 	gpiosim_set_pull sim0 1 pull-down
@@ -2303,7 +2301,7 @@ test_gpiomon_with_no_arguments() {
 test_gpiomon_with_no_line_specified() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpiomon --chip ${GPIOSIM_CHIP_NAME[sim0]}
+	run_tool gpiomon --chip "${GPIOSIM_CHIP_NAME[sim0]}"
 
 	output_regex_match ".*at least one GPIO line must be specified"
 	status_is 1
@@ -2314,7 +2312,7 @@ test_gpiomon_with_offset_out_of_range() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpiomon --chip $sim0 5
+	run_tool gpiomon --chip "$sim0" 5
 
 	output_regex_match ".*offset 5 is out of range on chip '$sim0'"
 	status_is 1
@@ -2325,7 +2323,7 @@ test_gpiomon_with_invalid_bias() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpiomon --bias=bad -c $sim0 0 1
+	run_tool gpiomon --bias=bad -c "$sim0" 0 1
 
 	output_regex_match ".*invalid bias.*"
 	status_is 1
@@ -2336,7 +2334,7 @@ test_gpiomon_with_invalid_debounce_period() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpiomon --debounce-period bad -c $sim0 0 1
+	run_tool gpiomon --debounce-period bad -c "$sim0" 0 1
 
 	output_regex_match ".*invalid period: bad"
 	status_is 1
@@ -2347,7 +2345,7 @@ test_gpiomon_with_invalid_idle_timeout() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpiomon --idle-timeout bad -c $sim0 0 1
+	run_tool gpiomon --idle-timeout bad -c "$sim0" 0 1
 
 	output_regex_match ".*invalid period: bad"
 	status_is 1
@@ -2358,7 +2356,7 @@ test_gpiomon_with_custom_format_event_type_offset() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=%e %o" -c $sim0 4
+	dut_run gpiomon --banner "--format=%e %o" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2371,7 +2369,7 @@ test_gpiomon_with_custom_format_event_type_offset_joined() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=%e%o" -c $sim0 4
+	dut_run gpiomon --banner "--format=%e%o" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2384,7 +2382,7 @@ test_gpiomon_with_custom_format_edge_chip_and_line() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=%e %o %E %c %l" -c $sim0 baz
+	dut_run gpiomon --banner "--format=%e %o %E %c %l" -c "$sim0" baz
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2396,7 +2394,7 @@ test_gpiomon_with_custom_format_seconds_timestamp() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=%e %o %S" -c $sim0 4
+	dut_run gpiomon --banner "--format=%e %o %S" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2409,7 +2407,7 @@ test_gpiomon_with_custom_format_UTC_timestamp() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpiomon --banner "--format=%U %e %o " --event-clock=realtime \
-		-c $sim0 4
+		-c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2423,7 +2421,7 @@ test_gpiomon_with_custom_format_localtime_timestamp() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpiomon --banner "--format=%L %e %o" --event-clock=realtime \
-		-c $sim0 4
+		-c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2436,7 +2434,7 @@ test_gpiomon_with_custom_format_double_percent_sign() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=start%%end" -c $sim0 4
+	dut_run gpiomon --banner "--format=start%%end" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2449,7 +2447,7 @@ test_gpiomon_with_custom_format_double_percent_sign_event_type_specifier() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=%%e" -c $sim0 4
+	dut_run gpiomon --banner "--format=%%e" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2462,7 +2460,7 @@ test_gpiomon_with_custom_format_single_percent_sign() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=%" -c $sim0 4
+	dut_run gpiomon --banner "--format=%" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2475,7 +2473,7 @@ test_gpiomon_with_custom_format_single_percent_sign_between_other_characters() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=foo % bar" -c $sim0 4
+	dut_run gpiomon --banner "--format=foo % bar" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2488,7 +2486,7 @@ test_gpiomon_with_custom_format_unknown_specifier() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpiomon --banner "--format=%x" -c $sim0 4
+	dut_run gpiomon --banner "--format=%x" -c "$sim0" 4
 	dut_flush
 
 	gpiosim_set_pull sim0 4 pull-up
@@ -2508,7 +2506,7 @@ test_gpionotify_by_name() {
 	dut_run gpionotify --banner foo
 	dut_regex_match "Watching line .*"
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+\"foo\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+\"foo\""
@@ -2520,10 +2518,10 @@ test_gpionotify_by_offset() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --chip $sim0 4
+	dut_run gpionotify --banner --chip "$sim0" 4
 	dut_regex_match "Watching line .*"
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 4"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 4"
 
@@ -2536,10 +2534,10 @@ test_gpionotify_by_symlink() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --chip $GPIOSIM_CHIP_LINK 4
+	dut_run gpionotify --banner --chip "$GPIOSIM_CHIP_LINK" 4
 	dut_regex_match "Watching line .*"
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0\\s+4"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0\\s+4"
 
@@ -2552,10 +2550,10 @@ test_gpionotify_by_chip_and_name() {
 
 	local sim1=${GPIOSIM_CHIP_NAME[sim1]}
 
-	dut_run gpionotify --banner --chip $sim1 foo
+	dut_run gpionotify --banner --chip "$sim1" foo
 	dut_regex_match "Watching line .*"
 
-	request_release_line $sim1 2
+	request_release_line "$sim1" 2
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim1 2 \"foo\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim1 2 \"foo\""
 
@@ -2572,7 +2570,7 @@ test_gpionotify_first_matching_named_line() {
 	dut_run gpionotify --banner foobar
 	dut_regex_match "Watching line .*"
 
-	request_release_line ${GPIOSIM_CHIP_NAME[sim0]} 3
+	request_release_line "${GPIOSIM_CHIP_NAME[sim0]}" 3
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+\"foobar\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+\"foobar\""
 
@@ -2586,10 +2584,10 @@ test_gpionotify_with_requested() {
 
 	gpiosim_set_pull sim0 4 pull-up
 
-	dut_run gpionotify --banner --event=requested --chip $sim0 4
+	dut_run gpionotify --banner --event=requested --chip "$sim0" 4
 	dut_flush
 
-	request_release_line ${GPIOSIM_CHIP_NAME[sim0]} 4
+	request_release_line "${GPIOSIM_CHIP_NAME[sim0]}" 4
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 4"
 	assert_fail dut_readable
 }
@@ -2600,10 +2598,10 @@ test_gpionotify_with_released() {
 
 	gpiosim_set_pull sim0 4 pull-down
 
-	dut_run gpionotify --banner --event=released --chip $sim0 4
+	dut_run gpionotify --banner --event=released --chip "$sim0" 4
 	dut_flush
 
-	request_release_line ${GPIOSIM_CHIP_NAME[sim0]} 4
+	request_release_line "${GPIOSIM_CHIP_NAME[sim0]}" 4
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 4"
 	assert_fail dut_readable
 }
@@ -2613,10 +2611,10 @@ test_gpionotify_with_quiet_mode() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --quiet --chip $sim0 4
+	dut_run gpionotify --banner --quiet --chip "$sim0" 4
 	dut_flush
 
-	request_release_line ${GPIOSIM_CHIP_NAME[sim0]} 4
+	request_release_line "${GPIOSIM_CHIP_NAME[sim0]}" 4
 	assert_fail dut_readable
 }
 
@@ -2628,7 +2626,7 @@ test_gpionotify_with_unquoted() {
 	dut_run gpionotify --banner --unquoted foo
 	dut_regex_match "Watching line .*"
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+foo"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+foo"
@@ -2640,11 +2638,11 @@ test_gpionotify_with_num_events() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# redirect, as gpionotify exits after 4 events
-	dut_run_redirect gpionotify --num-events=4 --chip $sim0 3 4
+	dut_run_redirect gpionotify --num-events=4 --chip "$sim0" 3 4
 
 
-	request_release_line ${GPIOSIM_CHIP_NAME[sim0]} 4
-	request_release_line ${GPIOSIM_CHIP_NAME[sim0]} 3
+	request_release_line "${GPIOSIM_CHIP_NAME[sim0]}" 4
+	request_release_line "${GPIOSIM_CHIP_NAME[sim0]}" 3
 
 	dut_wait
 	status_is 0
@@ -2663,7 +2661,7 @@ test_gpionotify_with_idle_timeout() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# redirect, as gpionotify exits
-	dut_run_redirect gpionotify --idle-timeout 10ms --chip $sim0 3 4
+	dut_run_redirect gpionotify --idle-timeout 10ms --chip "$sim0" 3 4
 
 	dut_wait
 	status_is 0
@@ -2677,18 +2675,18 @@ test_gpionotify_multiple_lines() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --chip $sim0 1 2 3 4 5
+	dut_run gpionotify --banner --chip "$sim0" 1 2 3 4 5
 	dut_regex_match "Watching lines .*"
 
-	request_release_line $sim0 2
+	request_release_line "$sim0" 2
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 2"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 2"
 
-	request_release_line $sim0 3
+	request_release_line "$sim0" 3
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 3"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 3"
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 4"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 4"
 
@@ -2700,18 +2698,18 @@ test_gpionotify_multiple_lines_by_name_and_offset() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --chip $sim0 bar foo 3
+	dut_run gpionotify --banner --chip "$sim0" bar foo 3
 	dut_regex_match "Watching lines .*"
 
-	request_release_line $sim0 2
+	request_release_line "$sim0" 2
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 2\\s+\"bar\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 2\\s+\"bar\""
 
-	request_release_line $sim0 1
+	request_release_line "$sim0" 1
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 1\\s+\"foo\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 1\\s+\"foo\""
 
-	request_release_line $sim0 3
+	request_release_line "$sim0" 3
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 3"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 3"
 
@@ -2728,19 +2726,19 @@ test_gpionotify_multiple_lines_across_multiple_chips() {
 	dut_run gpionotify --banner baz bar foo xyz
 	dut_regex_match "Watching lines .*"
 
-	request_release_line $sim0 2
+	request_release_line "$sim0" 2
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+\"bar\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+\"bar\""
 
-	request_release_line $sim0 1
+	request_release_line "$sim0" 1
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+\"foo\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+\"foo\""
 
-	request_release_line $sim1 4
+	request_release_line "$sim1" 4
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+\"xyz\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+\"xyz\""
 
-	request_release_line $sim1 0
+	request_release_line "$sim1" 0
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+\"baz\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+\"baz\""
 
@@ -2750,7 +2748,7 @@ test_gpionotify_multiple_lines_across_multiple_chips() {
 test_gpionotify_exit_after_SIGINT() {
 	gpiosim_chip sim0 num_lines=8
 
-	dut_run gpionotify --banner --chip ${GPIOSIM_CHIP_NAME[sim0]} 4
+	dut_run gpionotify --banner --chip "${GPIOSIM_CHIP_NAME[sim0]}" 4
 	dut_regex_match "Watching line .*"
 
 	dut_kill -SIGINT
@@ -2762,7 +2760,7 @@ test_gpionotify_exit_after_SIGINT() {
 test_gpionotify_exit_after_SIGTERM() {
 	gpiosim_chip sim0 num_lines=8
 
-	dut_run gpionotify --banner --chip ${GPIOSIM_CHIP_NAME[sim0]} 4
+	dut_run gpionotify --banner --chip "${GPIOSIM_CHIP_NAME[sim0]}" 4
 	dut_regex_match "Watching line .*"
 
 	dut_kill -SIGTERM
@@ -2784,7 +2782,7 @@ test_gpionotify_with_same_line_twice() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	# by offset
-	run_tool gpionotify --chip $sim0 0 0
+	run_tool gpionotify --chip "$sim0" 0 0
 
 	output_regex_match ".*lines '0' and '0' are the same line"
 	num_lines_is 1
@@ -2798,7 +2796,7 @@ test_gpionotify_with_same_line_twice() {
 	status_is 1
 
 	# by name and offset
-	run_tool gpionotify --chip $sim0 1 foo
+	run_tool gpionotify --chip "$sim0" 1 foo
 
 	output_regex_match ".*lines '1' and 'foo' are the same line"
 	num_lines_is 1
@@ -2825,14 +2823,14 @@ test_gpionotify_with_lines_by_offset() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --chip $sim0 1
+	dut_run gpionotify --banner --chip "$sim0" 1
 	dut_flush
 
-	request_release_line $sim0 1
+	request_release_line "$sim0" 1
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 1"
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 1"
 
-	request_release_line $sim0 6
+	request_release_line "$sim0" 6
 
 	assert_fail dut_readable
 }
@@ -2844,14 +2842,14 @@ test_gpionotify_with_lines_strictly_by_name() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --by-name --chip $sim0 1
+	dut_run gpionotify --banner --by-name --chip "$sim0" 1
 	dut_flush
 
-	request_release_line $sim0 6
+	request_release_line "$sim0" 6
 	dut_regex_match "[0-9]+\.[0-9]+\\s+requested\\s+$sim0 6 \"1\""
 	dut_regex_match "[0-9]+\.[0-9]+\\s+released\\s+$sim0 6 \"1\""
 
-	request_release_line $sim0 1
+	request_release_line "$sim0" 1
 	assert_fail dut_readable
 }
 
@@ -2865,7 +2863,7 @@ test_gpionotify_with_no_arguments() {
 test_gpionotify_with_no_line_specified() {
 	gpiosim_chip sim0 num_lines=8
 
-	run_tool gpionotify --chip ${GPIOSIM_CHIP_NAME[sim0]}
+	run_tool gpionotify --chip "${GPIOSIM_CHIP_NAME[sim0]}"
 
 	output_regex_match ".*at least one GPIO line must be specified"
 	status_is 1
@@ -2876,7 +2874,7 @@ test_gpionotify_with_offset_out_of_range() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpionotify --chip $sim0 5
+	run_tool gpionotify --chip "$sim0" 5
 
 	output_regex_match ".*offset 5 is out of range on chip '$sim0'"
 	status_is 1
@@ -2887,7 +2885,7 @@ test_gpionotify_with_invalid_idle_timeout() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	run_tool gpionotify --idle-timeout bad -c $sim0 0 1
+	run_tool gpionotify --idle-timeout bad -c "$sim0" 0 1
 
 	output_regex_match ".*invalid period: bad"
 	status_is 1
@@ -2898,10 +2896,10 @@ test_gpionotify_with_custom_format_event_type_offset() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --event=requested "--format=%e %o" -c $sim0 4
+	dut_run gpionotify --banner --event=requested "--format=%e %o" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_read
 	output_is "1 4"
 }
@@ -2911,10 +2909,10 @@ test_gpionotify_with_custom_format_event_type_offset_joined() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --event=requested "--format=%e%o" -c $sim0 4
+	dut_run gpionotify --banner --event=requested "--format=%e%o" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_read
 	output_is "14"
 }
@@ -2925,10 +2923,10 @@ test_gpionotify_with_custom_format_event_chip_and_line() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpionotify --banner --event=released \
-		"--format=%e %o %E %c %l" -c $sim0 baz
+		"--format=%e %o %E %c %l" -c "$sim0" baz
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_regex_match "2 4 released $sim0 baz"
 }
 
@@ -2938,10 +2936,10 @@ test_gpionotify_with_custom_format_seconds_timestamp() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpionotify --banner --event=requested "--format=%e %o %S" \
-		-c $sim0 4
+		-c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_regex_match "1 4 [0-9]+\\.[0-9]+"
 }
 
@@ -2951,10 +2949,10 @@ test_gpionotify_with_custom_format_UTC_timestamp() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpionotify --banner --event=released \
-		"--format=%U %e %o" -c $sim0 4
+		"--format=%U %e %o" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_regex_match \
 "[0-9][0-9][0-9][0-9]-[0-1][0-9]-[0-3][0-9]T[0-2][0-9]:[0-5][0-9]:[0-5][0-9]\\.[0-9]+Z 2 4"
 }
@@ -2965,10 +2963,10 @@ test_gpionotify_with_custom_format_localtime_timestamp() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpionotify --banner --event=released \
-		"--format=%L %e %o" -c $sim0 4
+		"--format=%L %e %o" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_regex_match \
 "[0-9][0-9][0-9][0-9]-[0-1][0-9]-[0-3][0-9]T[0-2][0-9]:[0-5][0-9]:[0-5][0-9]\\.[0-9]+ 2 4"
 }
@@ -2979,10 +2977,10 @@ test_gpionotify_with_custom_format_double_percent_sign() {
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
 	dut_run gpionotify --banner --event=requested "--format=start%%end" \
-		-c $sim0 4
+		-c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_read
 	output_is "start%end"
 }
@@ -2992,10 +2990,10 @@ test_gpionotify_with_custom_format_double_percent_sign_event_type_specifier() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --event=requested "--format=%%e" -c $sim0 4
+	dut_run gpionotify --banner --event=requested "--format=%%e" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_read
 	output_is "%e"
 }
@@ -3005,10 +3003,10 @@ test_gpionotify_with_custom_format_single_percent_sign() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --event=requested "--format=%" -c $sim0 4
+	dut_run gpionotify --banner --event=requested "--format=%" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_read
 	output_is "%"
 }
@@ -3018,10 +3016,10 @@ test_gpionotify_with_custom_format_single_percent_sign_between_other_characters(
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --event=requested "--format=foo % bar" -c $sim0 4
+	dut_run gpionotify --banner --event=requested "--format=foo % bar" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_read
 	output_is "foo % bar"
 }
@@ -3031,10 +3029,10 @@ test_gpionotify_with_custom_format_unknown_specifier() {
 
 	local sim0=${GPIOSIM_CHIP_NAME[sim0]}
 
-	dut_run gpionotify --banner --event=requested "--format=%x" -c $sim0 4
+	dut_run gpionotify --banner --event=requested "--format=%x" -c "$sim0" 4
 	dut_flush
 
-	request_release_line $sim0 4
+	request_release_line "$sim0" 4
 	dut_read
 	output_is "%x"
 }
-- 
2.39.2

Re: [libgpiod][PATCH v2 0/8] tools: tests: fix shellcheck warnings

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>


On Mon, 03 Jun 2024 19:56:20 +0800, Kent Gibson wrote:
> Following up on recent discussions, this series fixes all the warnings
> detected by shellcheck.  The resulting tools test script is now clean,
> at least from the perspective of shellcheck.
> 
> These fixes do not correct any known issue, other than shellcheck
> reporting them as potential problems, the intent is to remove common
> shell issues that may impact future changes, and to simplify checking
> that any subsequent changes to the test script constitute "good" shell.
> 
> [...]

Applied, thanks!

[1/8] tools: tests: don't mix string and array
      commit: ee9751a07dee230229e4b85dde14c600397e026d
[2/8] tools: tests: declare and assign separately
      commit: 57ed5cfe66f03d0a30f34aa319560e9079bbcee3
[3/8] tools: tests: fix unused variables
      commit: a88ed2f9bfbf3b73c156f8db45b6b6af62291c53
[4/8] tools: tests: use read -r to avoid mangling backslashes
      commit: 48f634ab57e8b2c0173a4138737895bee070c493
[5/8] tools: tests: don't use variables in printf format string
      commit: 45f2d4ba38852b611bc4bf622b2582de85b0ab91
[6/8] tools: tests: check exit code directly
      commit: 934adda1339707f4721af0a7a128e20737ed9986
[7/8] tools: tests: shellcheck don't follow sourced file
      commit: 2f140aed7d3cebb3dd67a31f8fd6846f3c5a480d
[8/8] tools: tests: avoid splitting and globbing
      commit: 37f3676cef721e6909ea84cd6c4ada5dab84f4fb

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>