summary: Ensure that the microstack-support device delegation works.

details: |
    The microstack-support interface delegates device cgroup handling to the
    snap.

environment:
    SNAP_NAME: test-snapd-sh

prepare: |
    "$TESTSTOOLS"/snaps-state install-local test-snapd-sh

execute: |
    echo "When the interface is connected"
    snap connect "$SNAP_NAME":microstack-support

    snap restart "$SNAP_NAME"

    retry -n 50 --wait 0.1 sh -c "test -f /var/snap/$SNAP_NAME/common/proc_self_cgroup"
    CGROUP=$(grep ':devices:' "/var/snap/$SNAP_NAME/common/proc_self_cgroup" | cut -d':' -f3)
    if [ -n "$CGROUP" ]; then
        # cgroup v1
        echo "Service cgroup v1 is $CGROUP"
        MATCH 'a \*:\* rwm' < "/sys/fs/cgroup/devices/$CGROUP/devices.list"
    else
        # cgroup v2
        CGROUP=$(grep '^0:' "/var/snap/$SNAP_NAME/common/proc_self_cgroup" | cut -d':' -f3)
        echo "Service cgroup v2 is $CGROUP"
        NOMATCH 'device' < "/sys/fs/cgroup/$CGROUP/cgroup.controllers"
    fi