Add integration test for limactl snapshot

Signed-off-by: Anders F Björklund <anders.f.bjorklund@gmail.com>

hack/test-example.sh

@@ -22,6 +22,7 @@ declare -A CHECKS=(
 	["mount-home"]="1"
 	["containerd-user"]="1"
 	["restart"]="1"
+	["snapshot"]="1"
 	["port-forwards"]="1"
 	["vmnet"]=""
 	["disk"]=""
@@ -299,6 +300,36 @@ if [[ -n ${CHECKS["restart"]} ]]; then
 	fi
 fi
 
+if [[ -n ${CHECKS["snapshot"]} ]]; then
+	INFO "Testing online snapshots"
+	limactl shell "$NAME" sh -c 'echo foo > /tmp/test'
+	limactl snapshot create "$NAME" --tag snap1
+	got=$(limactl snapshot list "$NAME" --short)
+	expected="snap1"
+	INFO "snapshot list: expected=${expected} got=${got}"
+	if [ "$got" != "$expected" ]; then
+		ERROR "snapshot list did not return expected value"
+		exit 1
+	fi
+	limactl shell "$NAME" sh -c 'echo bar > /tmp/test'
+	limactl snapshot apply "$NAME" --tag snap1
+	got=$(limactl shell "$NAME" cat /tmp/test)
+	expected="foo"
+	INFO "snapshot apply: expected=${expected} got=${got}"
+	if [ "$got" != "$expected" ]; then
+		ERROR "snapshot apply did not restore snapshot"
+		exit 1
+	fi
+	limactl snapshot delete "$NAME" --tag snap1
+	limactl shell "$NAME" rm /tmp/test
+	INFO "Testing offline snapshots"
+	limactl stop "$NAME"
+	sleep 3
+	limactl snapshot create "$NAME" --tag snap2
+	limactl snapshot delete "$NAME" --tag snap2
+	limactl start "$NAME"
+fi
+
 INFO "Stopping \"$NAME\""
 limactl stop "$NAME"
 sleep 3