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summary: Ensure that the gpio physical memory control interface works.
details: |
The gpio-memory-control interface allows read/write access to all gpio memory.
systems: [ubuntu-core-18-arm-32*]
prepare: |
echo "Given the test-snapd-gpio-memory-control snap is installed"
snap install test-snapd-gpio-memory-control
execute: |
if ! [ -c /dev/gpiomem ]; then
echo "The /dev/gpiomem device does not exist in current system"
exit 0
fi
echo "The interface is not connected by default"
#shellcheck disable=SC1117
snap interfaces -i gpio-memory-control | MATCH '^- +test-snapd-gpio-memory-control:gpio-memory-control'
echo "When the interface is connected"
snap connect test-snapd-gpio-memory-control:gpio-memory-control
echo "Then the snap is able read and write the physical memory"
test-snapd-gpio-memory-control.gpiomem
if [ "$(snap debug confinement)" = partial ] ; then
exit 0
fi
echo "When the plug is disconnected"
snap disconnect test-snapd-gpio-memory-control:gpio-memory-control
echo "Then the snap is not able to access the gpio physical memory"
if test-snapd-gpio-memory-control.gpiomem 2> call.error; then
echo "Expected permission error reading the gpio physical memory with disconnected plug"
exit 1
fi
MATCH "Permission denied" < call.error
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