docs/test/integration/api/save.bats

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#!/usr/bin/env bats
load ../helpers
function teardown() {
swarm_manage_cleanup
stop_docker
}
@test "docker save" {
# Start one empty host and one with busybox to ensure swarm selects the
# right one (and not one at random).
start_docker 1
start_docker_with_busybox 1
swarm_manage
# make sure busybox image exists
run docker_swarm images
[ "$status" -eq 0 ]
[[ "${output}" == *"busybox"* ]]
temp_file_name=$(mktemp)
temp_file_name_o=$(mktemp)
# save >, image->tar
docker_swarm save busybox > $temp_file_name
# save -o, image->tar
docker_swarm save -o $temp_file_name_o busybox
# saved image file exists, not empty and is tar file
[ -s $temp_file_name ]
run file $temp_file_name
[ "$status" -eq 0 ]
[[ "${output}" == *"tar archive"* ]]
[ -s $temp_file_name_o ]
run file $temp_file_name_o
[ "$status" -eq 0 ]
[[ "${output}" == *"tar archive"* ]]
# after ok, delete saved tar file
rm -f $temp_file_name
rm -f $temp_file_name_o
}
@test "docker save multi-images" {
start_docker_with_busybox 2
# tag busybox
docker -H ${HOSTS[0]} tag busybox test1
docker -H ${HOSTS[1]} tag busybox test2
# start manage
swarm_manage
# make sure image exists
run docker_swarm images
[ "$status" -eq 0 ]
[[ "${output}" == *"busybox"* ]]
[[ "${output}" == *"test1"* ]]
[[ "${output}" == *"test2"* ]]
local temp_file_name=$(mktemp)
# do not support save images which are on multi machine
run docker_swarm save -o "$temp_file_name" busybox test1 test2
[ "$status" -ne 0 ]
[[ "${output}" == *"Unable to find an engine containing all images"* ]]
# save images which are on same machine
docker_swarm save -o "$temp_file_name" busybox test1
# saved image file exists, not empty and is tar file
[ -s $temp_file_name ]
run file $temp_file_name
[ "$status" -eq 0 ]
[[ "${output}" == *"tar archive"* ]]
# Try to load our image back on an empty docker engine.
start_docker 1
run docker -H "${HOSTS[2]}" images -q
[ "$status" -eq 0 ]
[ "${#lines[@]}" -eq 0 ]
docker -H "${HOSTS[2]}" load -i "$temp_file_name"
run docker -H ${HOSTS[2]} images
[ "$status" -eq 0 ]
[[ "${output}" == *"busybox"* ]]
[[ "${output}" == *"test1"* ]]
rm -f $temp_file_name
}