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summary: Checks handling of common snap directories of parallel installed snaps
details: |
Snapd allows installation of the same snap more than once by combining the
same snap name with different values of an instance key.
Installation of a snap under an instance key is somewhat different than
installation of a snap with an empty instance key, because the a set of
directories without the key must also be created as anchor points for the
bind mount system used at runtime.
The test installs a specially crafted snap, which fails to install
correctly, with an instance key and observes that the directories that do
not contain the instance key, but are required for operation, are removed by
the undo handler of the appropriate task.
prepare: |
snap set system experimental.parallel-instances=true
restore: |
snap set system experimental.parallel-instances=null
execute: |
# the snap is named 'test-snapd-service'
path="$("$TESTSTOOLS"/snaps-state pack-local test-snapd-service-v2-bad)"
test -n "$path"
echo "Given a snap that fails to install"
not snap install --dangerous "$path"
snap change --last=install | MATCH 'Error.*Start snap "test-snapd-service" \(unset\) services'
echo "Shared snap directories are cleaned up in undo"
SNAP_MOUNT_DIR="$(os.paths snap-mount-dir)"
not test -d "$SNAP_MOUNT_DIR/test-snapd-service"
not test -d "/var/snap/test-snapd-service"
echo "Given a snap with instance key foo that fails to install"
not snap install --dangerous --name test-snapd-service_foo "$path"
snap change --last=install | MATCH 'Error.*Start snap "test-snapd-service_foo" \(unset\) services'
echo "Instance foo directories are cleaned up"
not test -d "$SNAP_MOUNT_DIR/test-snapd-service_foo"
not test -d "/var/snap/test-snapd-service_foo"
echo "Shared snap directories are cleaned up as well"
not test -d "$SNAP_MOUNT_DIR/test-snapd-service"
not test -d "/var/snap/test-snapd-service"
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