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summary: Ensure that the device-buttons interface works.
details: |
The device-buttons interface allows reading and writing to gpio-keys
devices.
prepare: |
"$TESTSTOOLS"/snaps-state install-local test-snapd-sh
# Create device files which are going to be used so simulate a real device
# and input data. In case the device already exists, it is going to be
# backed up. Devices used following documentation:
# the https://github.com/torvalds/linux/blob/master/Documentation/admin-guide/devices.txt#L408
"$TESTSTOOLS"/fs-state mock-file /dev/input/event1
restore: |
# Delete the created device files and restore backed up files
"$TESTSTOOLS"/fs-state restore-file /dev/input/event1
execute: |
echo "The interface is not connected by default"
snap interfaces -i device-buttons | MATCH "\\- +test-snapd-sh:device-buttons"
echo "When the interface is connected"
snap connect test-snapd-sh:device-buttons
echo "Then the snap is able to access the device input for the new interface"
test-snapd-sh.with-device-buttons-plug -c "echo test >> /dev/input/event1"
echo "Then the snap is able to read the supported event reports for the input device"
capabilities="$(find /sys/devices/ -type d -name capabilities | grep -E "/sys/devices/.*/input[0-9].*/capabilities" | head -n1)"
if [ -n "$capabilities" ]; then
test-snapd-sh.with-device-buttons-plug -c "ls $capabilities"
fi
if [ "$(snap debug confinement)" = partial ] ; then
exit 0
fi
echo "When the plug is disconnected"
snap disconnect test-snapd-sh:device-buttons
echo "Then the snap is not able to read the input device"
if test-snapd-sh.with-device-buttons-plug -c "cat /dev/input/event1" 2> call.error; then
echo "Expected permission error accessing to input device"
exit 1
fi
MATCH "Permission denied" < call.error
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