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summary: Ensure that the cups interface works.
details: |
The cups-control interface allows a snap to access the locale configuration.
A snap which defines the cups-control plug must be shown in the interfaces
list. The plug must not be auto-connected on install and, as usual, must be
able to be reconnected.
A snap declaring a plug on this interface must be able to talk to the cups
daemon. The test snap used pulls the lpr functionality and installs a pdf
printer. In order to actually connect to the socket it needs to declare a
plug on the network interface. The test checks for the existence of a pdf
file generated by the lpr command in the snap.
# Default cups/cups-pdf configuration on these distributions isn't working yet without further tweaks.
# TODO: enable on debian-sid once https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1006853 is fixed
systems: [-ubuntu-core-*, -opensuse-*, -fedora-*, -arch-*, -amazon-*, -centos-*, -debian-sid-*]
environment:
TEST_FILE: /var/snap/test-snapd-cups-control-consumer/current/test_file.txt
prepare: |
echo "Given a snap declaring a cups plug is installed"
snap install test-snapd-cups-control-consumer
if not os.query is-trusty; then
# Not all distributions are starting the cups service directly after
# the package was installed.
echo "Enabling cups service in case it is not enabled"
if ! systemctl is-enabled cups ; then
# We can't use --now as this isn't supported by all distributions
systemctl enable cups
fi
echo "Starting cups service in case it is not active"
if ! systemctl is-active cups; then
systemctl start cups
fi
fi
restore: |
rm -rf "$HOME"/PDF "$TEST_FILE"
debug: |
systemctl status cups || true
"$TESTSTOOLS"/journal-state get-log -u cpus || true
execute: |
echo "Then the plug is disconnected by default"
snap interfaces -i cups-control | MATCH '^- +test-snapd-cups-control-consumer:cups-control'
echo "When the plug is connected"
snap connect test-snapd-cups-control-consumer:cups-control
echo "Then the snap command is able to print files"
echo "Hello World" > "$TEST_FILE"
test-snapd-cups-control-consumer.lpr "$TEST_FILE"
#shellcheck disable=SC2148
#shellcheck disable=SC2016
retry -n 60 --wait 1 sh -c 'test "$(find "$HOME"/PDF -name "*.pdf" | wc -l)" -ge 1'
if [ "$(snap debug confinement)" = partial ] ; then
exit 0
fi
echo "When the plug is disconnected"
snap disconnect test-snapd-cups-control-consumer:cups-control
echo "Then the snap command is not able to print files"
if test-snapd-cups-control-consumer.lpr "$TEST_FILE" 2>print.error; then
echo "Expected error with plug disconnected"
exit 1
fi
MATCH "(scheduler not responding|No default destination)" < print.error
|
