DockerCLI/cli/command/service/update_test.go

package service

import (
	"fmt"
	"reflect"
	"sort"
	"testing"
	"time"

	"github.com/docker/docker/api/types"
	"github.com/docker/docker/api/types/container"
	mounttypes "github.com/docker/docker/api/types/mount"
	"github.com/docker/docker/api/types/swarm"
	"github.com/gotestyourself/gotestyourself/assert"
	is "github.com/gotestyourself/gotestyourself/assert/cmp"
	"golang.org/x/net/context"
)

func TestUpdateServiceArgs(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("args", "the \"new args\"")

	spec := &swarm.ServiceSpec{
		TaskTemplate: swarm.TaskSpec{
			ContainerSpec: &swarm.ContainerSpec{},
		},
	}
	cspec := spec.TaskTemplate.ContainerSpec
	cspec.Args = []string{"old", "args"}

	updateService(nil, nil, flags, spec)
	assert.Check(t, is.DeepEqual([]string{"the", "new args"}, cspec.Args))
}

func TestUpdateLabels(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("label-add", "toadd=newlabel")
	flags.Set("label-rm", "toremove")

	labels := map[string]string{
		"toremove": "thelabeltoremove",
		"tokeep":   "value",
	}

	updateLabels(flags, &labels)
	assert.Check(t, is.Len(labels, 2))
	assert.Check(t, is.Equal("value", labels["tokeep"]))
	assert.Check(t, is.Equal("newlabel", labels["toadd"]))
}

func TestUpdateLabelsRemoveALabelThatDoesNotExist(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("label-rm", "dne")

	labels := map[string]string{"foo": "theoldlabel"}
	updateLabels(flags, &labels)
	assert.Check(t, is.Len(labels, 1))
}

func TestUpdatePlacementConstraints(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("constraint-add", "node=toadd")
	flags.Set("constraint-rm", "node!=toremove")

	placement := &swarm.Placement{
		Constraints: []string{"node!=toremove", "container=tokeep"},
	}

	updatePlacementConstraints(flags, placement)
	assert.Assert(t, is.Len(placement.Constraints, 2))
	assert.Check(t, is.Equal("container=tokeep", placement.Constraints[0]))
	assert.Check(t, is.Equal("node=toadd", placement.Constraints[1]))
}

func TestUpdatePlacementPrefs(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("placement-pref-add", "spread=node.labels.dc")
	flags.Set("placement-pref-rm", "spread=node.labels.rack")

	placement := &swarm.Placement{
		Preferences: []swarm.PlacementPreference{
			{
				Spread: &swarm.SpreadOver{
					SpreadDescriptor: "node.labels.rack",
				},
			},
			{
				Spread: &swarm.SpreadOver{
					SpreadDescriptor: "node.labels.row",
				},
			},
		},
	}

	updatePlacementPreferences(flags, placement)
	assert.Assert(t, is.Len(placement.Preferences, 2))
	assert.Check(t, is.Equal("node.labels.row", placement.Preferences[0].Spread.SpreadDescriptor))
	assert.Check(t, is.Equal("node.labels.dc", placement.Preferences[1].Spread.SpreadDescriptor))
}

func TestUpdateEnvironment(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("env-add", "toadd=newenv")
	flags.Set("env-rm", "toremove")

	envs := []string{"toremove=theenvtoremove", "tokeep=value"}

	updateEnvironment(flags, &envs)
	assert.Assert(t, is.Len(envs, 2))
	// Order has been removed in updateEnvironment (map)
	sort.Strings(envs)
	assert.Check(t, is.Equal("toadd=newenv", envs[0]))
	assert.Check(t, is.Equal("tokeep=value", envs[1]))
}

func TestUpdateEnvironmentWithDuplicateValues(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("env-add", "foo=newenv")
	flags.Set("env-add", "foo=dupe")
	flags.Set("env-rm", "foo")

	envs := []string{"foo=value"}

	updateEnvironment(flags, &envs)
	assert.Check(t, is.Len(envs, 0))
}

func TestUpdateEnvironmentWithDuplicateKeys(t *testing.T) {
	// Test case for #25404
	flags := newUpdateCommand(nil).Flags()
	flags.Set("env-add", "A=b")

	envs := []string{"A=c"}

	updateEnvironment(flags, &envs)
	assert.Assert(t, is.Len(envs, 1))
	assert.Check(t, is.Equal("A=b", envs[0]))
}

func TestUpdateGroups(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("group-add", "wheel")
	flags.Set("group-add", "docker")
	flags.Set("group-rm", "root")
	flags.Set("group-add", "foo")
	flags.Set("group-rm", "docker")

	groups := []string{"bar", "root"}

	updateGroups(flags, &groups)
	assert.Assert(t, is.Len(groups, 3))
	assert.Check(t, is.Equal("bar", groups[0]))
	assert.Check(t, is.Equal("foo", groups[1]))
	assert.Check(t, is.Equal("wheel", groups[2]))
}

func TestUpdateDNSConfig(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()

	// IPv4, with duplicates
	flags.Set("dns-add", "1.1.1.1")
	flags.Set("dns-add", "1.1.1.1")
	flags.Set("dns-add", "2.2.2.2")
	flags.Set("dns-rm", "3.3.3.3")
	flags.Set("dns-rm", "2.2.2.2")
	// IPv6
	flags.Set("dns-add", "2001:db8:abc8::1")
	// Invalid dns record
	assert.ErrorContains(t, flags.Set("dns-add", "x.y.z.w"), "x.y.z.w is not an ip address")

	// domains with duplicates
	flags.Set("dns-search-add", "example.com")
	flags.Set("dns-search-add", "example.com")
	flags.Set("dns-search-add", "example.org")
	flags.Set("dns-search-rm", "example.org")
	// Invalid dns search domain
	assert.ErrorContains(t, flags.Set("dns-search-add", "example$com"), "example$com is not a valid domain")

	flags.Set("dns-option-add", "ndots:9")
	flags.Set("dns-option-rm", "timeout:3")

	config := &swarm.DNSConfig{
		Nameservers: []string{"3.3.3.3", "5.5.5.5"},
		Search:      []string{"localdomain"},
		Options:     []string{"timeout:3"},
	}

	updateDNSConfig(flags, &config)

	assert.Assert(t, is.Len(config.Nameservers, 3))
	assert.Check(t, is.Equal("1.1.1.1", config.Nameservers[0]))
	assert.Check(t, is.Equal("2001:db8:abc8::1", config.Nameservers[1]))
	assert.Check(t, is.Equal("5.5.5.5", config.Nameservers[2]))

	assert.Assert(t, is.Len(config.Search, 2))
	assert.Check(t, is.Equal("example.com", config.Search[0]))
	assert.Check(t, is.Equal("localdomain", config.Search[1]))

	assert.Assert(t, is.Len(config.Options, 1))
	assert.Check(t, is.Equal(config.Options[0], "ndots:9"))
}

func TestUpdateMounts(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("mount-add", "type=volume,source=vol2,target=/toadd")
	flags.Set("mount-rm", "/toremove")

	mounts := []mounttypes.Mount{
		{Target: "/toremove", Source: "vol1", Type: mounttypes.TypeBind},
		{Target: "/tokeep", Source: "vol3", Type: mounttypes.TypeBind},
	}

	updateMounts(flags, &mounts)
	assert.Assert(t, is.Len(mounts, 2))
	assert.Check(t, is.Equal("/toadd", mounts[0].Target))
	assert.Check(t, is.Equal("/tokeep", mounts[1].Target))
}

func TestUpdateMountsWithDuplicateMounts(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("mount-add", "type=volume,source=vol4,target=/toadd")

	mounts := []mounttypes.Mount{
		{Target: "/tokeep1", Source: "vol1", Type: mounttypes.TypeBind},
		{Target: "/toadd", Source: "vol2", Type: mounttypes.TypeBind},
		{Target: "/tokeep2", Source: "vol3", Type: mounttypes.TypeBind},
	}

	updateMounts(flags, &mounts)
	assert.Assert(t, is.Len(mounts, 3))
	assert.Check(t, is.Equal("/tokeep1", mounts[0].Target))
	assert.Check(t, is.Equal("/tokeep2", mounts[1].Target))
	assert.Check(t, is.Equal("/toadd", mounts[2].Target))
}

func TestUpdatePorts(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("publish-add", "1000:1000")
	flags.Set("publish-rm", "333/udp")

	portConfigs := []swarm.PortConfig{
		{TargetPort: 333, Protocol: swarm.PortConfigProtocolUDP},
		{TargetPort: 555},
	}

	err := updatePorts(flags, &portConfigs)
	assert.NilError(t, err)
	assert.Assert(t, is.Len(portConfigs, 2))
	// Do a sort to have the order (might have changed by map)
	targetPorts := []int{int(portConfigs[0].TargetPort), int(portConfigs[1].TargetPort)}
	sort.Ints(targetPorts)
	assert.Check(t, is.Equal(555, targetPorts[0]))
	assert.Check(t, is.Equal(1000, targetPorts[1]))
}

func TestUpdatePortsDuplicate(t *testing.T) {
	// Test case for #25375
	flags := newUpdateCommand(nil).Flags()
	flags.Set("publish-add", "80:80")

	portConfigs := []swarm.PortConfig{
		{
			TargetPort:    80,
			PublishedPort: 80,
			Protocol:      swarm.PortConfigProtocolTCP,
			PublishMode:   swarm.PortConfigPublishModeIngress,
		},
	}

	err := updatePorts(flags, &portConfigs)
	assert.NilError(t, err)
	assert.Assert(t, is.Len(portConfigs, 1))
	assert.Check(t, is.Equal(uint32(80), portConfigs[0].TargetPort))
}

func TestUpdateHealthcheckTable(t *testing.T) {
	type test struct {
		flags    [][2]string
		initial  *container.HealthConfig
		expected *container.HealthConfig
		err      string
	}
	testCases := []test{
		{
			flags:    [][2]string{{"no-healthcheck", "true"}},
			initial:  &container.HealthConfig{Test: []string{"CMD-SHELL", "cmd1"}, Retries: 10},
			expected: &container.HealthConfig{Test: []string{"NONE"}},
		},
		{
			flags:    [][2]string{{"health-cmd", "cmd1"}},
			initial:  &container.HealthConfig{Test: []string{"NONE"}},
			expected: &container.HealthConfig{Test: []string{"CMD-SHELL", "cmd1"}},
		},
		{
			flags:    [][2]string{{"health-retries", "10"}},
			initial:  &container.HealthConfig{Test: []string{"NONE"}},
			expected: &container.HealthConfig{Retries: 10},
		},
		{
			flags:    [][2]string{{"health-retries", "10"}},
			initial:  &container.HealthConfig{Test: []string{"CMD", "cmd1"}},
			expected: &container.HealthConfig{Test: []string{"CMD", "cmd1"}, Retries: 10},
		},
		{
			flags:    [][2]string{{"health-interval", "1m"}},
			initial:  &container.HealthConfig{Test: []string{"CMD", "cmd1"}},
			expected: &container.HealthConfig{Test: []string{"CMD", "cmd1"}, Interval: time.Minute},
		},
		{
			flags:    [][2]string{{"health-cmd", ""}},
			initial:  &container.HealthConfig{Test: []string{"CMD", "cmd1"}, Retries: 10},
			expected: &container.HealthConfig{Retries: 10},
		},
		{
			flags:    [][2]string{{"health-retries", "0"}},
			initial:  &container.HealthConfig{Test: []string{"CMD", "cmd1"}, Retries: 10},
			expected: &container.HealthConfig{Test: []string{"CMD", "cmd1"}},
		},
		{
			flags:    [][2]string{{"health-start-period", "1m"}},
			initial:  &container.HealthConfig{Test: []string{"CMD", "cmd1"}},
			expected: &container.HealthConfig{Test: []string{"CMD", "cmd1"}, StartPeriod: time.Minute},
		},
		{
			flags: [][2]string{{"health-cmd", "cmd1"}, {"no-healthcheck", "true"}},
			err:   "--no-healthcheck conflicts with --health-* options",
		},
		{
			flags: [][2]string{{"health-interval", "10m"}, {"no-healthcheck", "true"}},
			err:   "--no-healthcheck conflicts with --health-* options",
		},
		{
			flags: [][2]string{{"health-timeout", "1m"}, {"no-healthcheck", "true"}},
			err:   "--no-healthcheck conflicts with --health-* options",
		},
	}
	for i, c := range testCases {
		flags := newUpdateCommand(nil).Flags()
		for _, flag := range c.flags {
			flags.Set(flag[0], flag[1])
		}
		cspec := &swarm.ContainerSpec{
			Healthcheck: c.initial,
		}
		err := updateHealthcheck(flags, cspec)
		if c.err != "" {
			assert.Error(t, err, c.err)
		} else {
			assert.NilError(t, err)
			if !reflect.DeepEqual(cspec.Healthcheck, c.expected) {
				t.Errorf("incorrect result for test %d, expected health config:\n\t%#v\ngot:\n\t%#v", i, c.expected, cspec.Healthcheck)
			}
		}
	}
}

func TestUpdateHosts(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("host-add", "example.net:2.2.2.2")
	flags.Set("host-add", "ipv6.net:2001:db8:abc8::1")
	// remove with ipv6 should work
	flags.Set("host-rm", "example.net:2001:db8:abc8::1")
	// just hostname should work as well
	flags.Set("host-rm", "example.net")
	// bad format error
	assert.ErrorContains(t, flags.Set("host-add", "$example.com$"), `bad format for add-host: "$example.com$"`)

	hosts := []string{"1.2.3.4 example.com", "4.3.2.1 example.org", "2001:db8:abc8::1 example.net"}
	expected := []string{"1.2.3.4 example.com", "4.3.2.1 example.org", "2001:db8:abc8::1 ipv6.net"}

	err := updateHosts(flags, &hosts)
	assert.NilError(t, err)
	assert.Check(t, is.DeepEqual(expected, hosts))
}

func TestUpdateHostsPreservesOrder(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("host-add", "foobar:127.0.0.2")
	flags.Set("host-add", "foobar:127.0.0.1")
	flags.Set("host-add", "foobar:127.0.0.3")

	hosts := []string{}
	err := updateHosts(flags, &hosts)
	assert.NilError(t, err)
	assert.Check(t, is.DeepEqual([]string{"127.0.0.2 foobar", "127.0.0.1 foobar", "127.0.0.3 foobar"}, hosts))
}

func TestUpdatePortsRmWithProtocol(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	flags.Set("publish-add", "8081:81")
	flags.Set("publish-add", "8082:82")
	flags.Set("publish-rm", "80")
	flags.Set("publish-rm", "81/tcp")
	flags.Set("publish-rm", "82/udp")

	portConfigs := []swarm.PortConfig{
		{
			TargetPort:    80,
			PublishedPort: 8080,
			Protocol:      swarm.PortConfigProtocolTCP,
			PublishMode:   swarm.PortConfigPublishModeIngress,
		},
	}

	err := updatePorts(flags, &portConfigs)
	assert.NilError(t, err)
	assert.Assert(t, is.Len(portConfigs, 2))
	assert.Check(t, is.Equal(uint32(81), portConfigs[0].TargetPort))
	assert.Check(t, is.Equal(uint32(82), portConfigs[1].TargetPort))
}

type secretAPIClientMock struct {
	listResult []swarm.Secret
}

func (s secretAPIClientMock) SecretList(ctx context.Context, options types.SecretListOptions) ([]swarm.Secret, error) {
	return s.listResult, nil
}
func (s secretAPIClientMock) SecretCreate(ctx context.Context, secret swarm.SecretSpec) (types.SecretCreateResponse, error) {
	return types.SecretCreateResponse{}, nil
}
func (s secretAPIClientMock) SecretRemove(ctx context.Context, id string) error {
	return nil
}
func (s secretAPIClientMock) SecretInspectWithRaw(ctx context.Context, name string) (swarm.Secret, []byte, error) {
	return swarm.Secret{}, []byte{}, nil
}
func (s secretAPIClientMock) SecretUpdate(ctx context.Context, id string, version swarm.Version, secret swarm.SecretSpec) error {
	return nil
}

// TestUpdateSecretUpdateInPlace tests the ability to update the "target" of an secret with "docker service update"
// by combining "--secret-rm" and "--secret-add" for the same secret.
func TestUpdateSecretUpdateInPlace(t *testing.T) {
	apiClient := secretAPIClientMock{
		listResult: []swarm.Secret{
			{
				ID:   "tn9qiblgnuuut11eufquw5dev",
				Spec: swarm.SecretSpec{Annotations: swarm.Annotations{Name: "foo"}},
			},
		},
	}

	flags := newUpdateCommand(nil).Flags()
	flags.Set("secret-add", "source=foo,target=foo2")
	flags.Set("secret-rm", "foo")

	secrets := []*swarm.SecretReference{
		{
			File: &swarm.SecretReferenceFileTarget{
				Name: "foo",
				UID:  "0",
				GID:  "0",
				Mode: 292,
			},
			SecretID:   "tn9qiblgnuuut11eufquw5dev",
			SecretName: "foo",
		},
	}

	updatedSecrets, err := getUpdatedSecrets(apiClient, flags, secrets)

	assert.NilError(t, err)
	assert.Assert(t, is.Len(updatedSecrets, 1))
	assert.Check(t, is.Equal("tn9qiblgnuuut11eufquw5dev", updatedSecrets[0].SecretID))
	assert.Check(t, is.Equal("foo", updatedSecrets[0].SecretName))
	assert.Check(t, is.Equal("foo2", updatedSecrets[0].File.Name))
}

func TestUpdateReadOnly(t *testing.T) {
	spec := &swarm.ServiceSpec{
		TaskTemplate: swarm.TaskSpec{
			ContainerSpec: &swarm.ContainerSpec{},
		},
	}
	cspec := spec.TaskTemplate.ContainerSpec

	// Update with --read-only=true, changed to true
	flags := newUpdateCommand(nil).Flags()
	flags.Set("read-only", "true")
	updateService(nil, nil, flags, spec)
	assert.Check(t, cspec.ReadOnly)

	// Update without --read-only, no change
	flags = newUpdateCommand(nil).Flags()
	updateService(nil, nil, flags, spec)
	assert.Check(t, cspec.ReadOnly)

	// Update with --read-only=false, changed to false
	flags = newUpdateCommand(nil).Flags()
	flags.Set("read-only", "false")
	updateService(nil, nil, flags, spec)
	assert.Check(t, !cspec.ReadOnly)
}

func TestUpdateStopSignal(t *testing.T) {
	spec := &swarm.ServiceSpec{
		TaskTemplate: swarm.TaskSpec{
			ContainerSpec: &swarm.ContainerSpec{},
		},
	}
	cspec := spec.TaskTemplate.ContainerSpec

	// Update with --stop-signal=SIGUSR1
	flags := newUpdateCommand(nil).Flags()
	flags.Set("stop-signal", "SIGUSR1")
	updateService(nil, nil, flags, spec)
	assert.Check(t, is.Equal("SIGUSR1", cspec.StopSignal))

	// Update without --stop-signal, no change
	flags = newUpdateCommand(nil).Flags()
	updateService(nil, nil, flags, spec)
	assert.Check(t, is.Equal("SIGUSR1", cspec.StopSignal))

	// Update with --stop-signal=SIGWINCH
	flags = newUpdateCommand(nil).Flags()
	flags.Set("stop-signal", "SIGWINCH")
	updateService(nil, nil, flags, spec)
	assert.Check(t, is.Equal("SIGWINCH", cspec.StopSignal))
}

func TestUpdateIsolationValid(t *testing.T) {
	flags := newUpdateCommand(nil).Flags()
	err := flags.Set("isolation", "process")
	assert.NilError(t, err)
	spec := swarm.ServiceSpec{
		TaskTemplate: swarm.TaskSpec{
			ContainerSpec: &swarm.ContainerSpec{},
		},
	}
	err = updateService(context.Background(), nil, flags, &spec)
	assert.NilError(t, err)
	assert.Check(t, is.Equal(container.IsolationProcess, spec.TaskTemplate.ContainerSpec.Isolation))
}

func TestUpdateIsolationInvalid(t *testing.T) {
	// validation depends on daemon os / version so validation should be done on the daemon side
	flags := newUpdateCommand(nil).Flags()
	err := flags.Set("isolation", "test")
	assert.NilError(t, err)
	spec := swarm.ServiceSpec{
		TaskTemplate: swarm.TaskSpec{
			ContainerSpec: &swarm.ContainerSpec{},
		},
	}
	err = updateService(context.Background(), nil, flags, &spec)
	assert.NilError(t, err)
	assert.Check(t, is.Equal(container.Isolation("test"), spec.TaskTemplate.ContainerSpec.Isolation))
}

func TestAddGenericResources(t *testing.T) {
	task := &swarm.TaskSpec{}
	flags := newUpdateCommand(nil).Flags()

	assert.Check(t, addGenericResources(flags, task))

	flags.Set(flagGenericResourcesAdd, "foo=1")
	assert.Check(t, addGenericResources(flags, task))
	assert.Check(t, is.Len(task.Resources.Reservations.GenericResources, 1))

	// Checks that foo isn't added a 2nd time
	flags = newUpdateCommand(nil).Flags()
	flags.Set(flagGenericResourcesAdd, "bar=1")
	assert.Check(t, addGenericResources(flags, task))
	assert.Check(t, is.Len(task.Resources.Reservations.GenericResources, 2))
}

func TestRemoveGenericResources(t *testing.T) {
	task := &swarm.TaskSpec{}
	flags := newUpdateCommand(nil).Flags()

	assert.Check(t, removeGenericResources(flags, task))

	flags.Set(flagGenericResourcesRemove, "foo")
	assert.Check(t, is.ErrorContains(removeGenericResources(flags, task), ""))

	flags = newUpdateCommand(nil).Flags()
	flags.Set(flagGenericResourcesAdd, "foo=1")
	addGenericResources(flags, task)
	flags = newUpdateCommand(nil).Flags()
	flags.Set(flagGenericResourcesAdd, "bar=1")
	addGenericResources(flags, task)

	flags = newUpdateCommand(nil).Flags()
	flags.Set(flagGenericResourcesRemove, "foo")
	assert.Check(t, removeGenericResources(flags, task))
	assert.Check(t, is.Len(task.Resources.Reservations.GenericResources, 1))
}

func TestUpdateNetworks(t *testing.T) {
	ctx := context.Background()
	nws := []types.NetworkResource{
		{Name: "aaa-network", ID: "id555"},
		{Name: "mmm-network", ID: "id999"},
		{Name: "zzz-network", ID: "id111"},
	}

	client := &fakeClient{
		networkInspectFunc: func(ctx context.Context, networkID string, options types.NetworkInspectOptions) (types.NetworkResource, error) {
			for _, network := range nws {
				if network.ID == networkID || network.Name == networkID {
					return network, nil
				}
			}
			return types.NetworkResource{}, fmt.Errorf("network not found: %s", networkID)
		},
	}

	svc := swarm.ServiceSpec{
		TaskTemplate: swarm.TaskSpec{
			ContainerSpec: &swarm.ContainerSpec{},
			Networks: []swarm.NetworkAttachmentConfig{
				{Target: "id999"},
			},
		},
	}

	flags := newUpdateCommand(nil).Flags()
	err := flags.Set(flagNetworkAdd, "aaa-network")
	assert.NilError(t, err)
	err = updateService(ctx, client, flags, &svc)
	assert.NilError(t, err)
	assert.Check(t, is.DeepEqual([]swarm.NetworkAttachmentConfig{{Target: "id555"}, {Target: "id999"}}, svc.TaskTemplate.Networks))

	flags = newUpdateCommand(nil).Flags()
	err = flags.Set(flagNetworkAdd, "aaa-network")
	assert.NilError(t, err)
	err = updateService(ctx, client, flags, &svc)
	assert.Error(t, err, "service is already attached to network aaa-network")
	assert.Check(t, is.DeepEqual([]swarm.NetworkAttachmentConfig{{Target: "id555"}, {Target: "id999"}}, svc.TaskTemplate.Networks))

	flags = newUpdateCommand(nil).Flags()
	err = flags.Set(flagNetworkAdd, "id555")
	assert.NilError(t, err)
	err = updateService(ctx, client, flags, &svc)
	assert.Error(t, err, "service is already attached to network id555")
	assert.Check(t, is.DeepEqual([]swarm.NetworkAttachmentConfig{{Target: "id555"}, {Target: "id999"}}, svc.TaskTemplate.Networks))

	flags = newUpdateCommand(nil).Flags()
	err = flags.Set(flagNetworkRemove, "id999")
	assert.NilError(t, err)
	err = updateService(ctx, client, flags, &svc)
	assert.NilError(t, err)
	assert.Check(t, is.DeepEqual([]swarm.NetworkAttachmentConfig{{Target: "id555"}}, svc.TaskTemplate.Networks))

	flags = newUpdateCommand(nil).Flags()
	err = flags.Set(flagNetworkAdd, "mmm-network")
	assert.NilError(t, err)
	err = flags.Set(flagNetworkRemove, "aaa-network")
	assert.NilError(t, err)
	err = updateService(ctx, client, flags, &svc)
	assert.NilError(t, err)
	assert.Check(t, is.DeepEqual([]swarm.NetworkAttachmentConfig{{Target: "id999"}}, svc.TaskTemplate.Networks))
}