cli/command/container: add unit tests for container restart

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cli/command/container/client_test.go

@@ -35,6 +35,7 @@ type fakeClient struct {
 	containerExportFunc     func(string) (io.ReadCloser, error)
 	containerExecResizeFunc func(id string, options container.ResizeOptions) error
 	containerRemoveFunc     func(ctx context.Context, containerID string, options container.RemoveOptions) error
+	containerRestartFunc    func(ctx context.Context, containerID string, options container.StopOptions) error
 	containerKillFunc       func(ctx context.Context, containerID, signal string) error
 	containerPruneFunc      func(ctx context.Context, pruneFilters filters.Args) (container.PruneReport, error)
 	containerAttachFunc     func(ctx context.Context, containerID string, options container.AttachOptions) (types.HijackedResponse, error)
@@ -175,6 +176,13 @@ func (f *fakeClient) ContainersPrune(ctx context.Context, pruneFilters filters.A
 	return container.PruneReport{}, nil
 }
 
+func (f *fakeClient) ContainerRestart(ctx context.Context, containerID string, options container.StopOptions) error {
+	if f.containerRestartFunc != nil {
+		return f.containerRestartFunc(ctx, containerID, options)
+	}
+	return nil
+}
+
 func (f *fakeClient) ContainerAttach(ctx context.Context, containerID string, options container.AttachOptions) (types.HijackedResponse, error) {
 	if f.containerAttachFunc != nil {
 		return f.containerAttachFunc(ctx, containerID, options)

cli/command/container/restart.go

@@ -55,6 +55,8 @@ func runRestart(ctx context.Context, dockerCli command.Cli, opts *restartOptions
 	if opts.timeoutChanged {
 		timeout = &opts.timeout
 	}
+
+	// TODO(thaJeztah): consider using parallelOperation for restart, similar to "stop" and "remove"
 	for _, name := range opts.containers {
 		err := dockerCli.Client().ContainerRestart(ctx, name, container.StopOptions{
 			Signal:  opts.signal,

cli/command/container/restart_test.go

@@ -0,0 +1,85 @@
+package container
+
+import (
+	"context"
+	"io"
+	"sort"
+	"sync"
+	"testing"
+
+	"github.com/docker/cli/internal/test"
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/errdefs"
+	"github.com/pkg/errors"
+	"gotest.tools/v3/assert"
+	is "gotest.tools/v3/assert/cmp"
+)
+
+func TestRestart(t *testing.T) {
+	for _, tc := range []struct {
+		name         string
+		args         []string
+		restarted    []string
+		expectedOpts container.StopOptions
+		expectedErr  string
+	}{
+		{
+			name:      "without options",
+			args:      []string{"container-1", "container-2"},
+			restarted: []string{"container-1", "container-2"},
+		},
+		{
+			name:        "with unknown container",
+			args:        []string{"container-1", "nosuchcontainer", "container-2"},
+			expectedErr: "no such container",
+			restarted:   []string{"container-1", "container-2"},
+		},
+		{
+			name:         "with -t",
+			args:         []string{"-t", "2", "container-1"},
+			expectedOpts: container.StopOptions{Timeout: func(to int) *int { return &to }(2)},
+			restarted:    []string{"container-1"},
+		},
+		{
+			name:         "with --time",
+			args:         []string{"--time", "2", "container-1"},
+			expectedOpts: container.StopOptions{Timeout: func(to int) *int { return &to }(2)},
+			restarted:    []string{"container-1"},
+		},
+	} {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			var restarted []string
+			mutex := new(sync.Mutex)
+
+			cli := test.NewFakeCli(&fakeClient{
+				containerRestartFunc: func(ctx context.Context, containerID string, options container.StopOptions) error {
+					assert.Check(t, is.DeepEqual(options, tc.expectedOpts))
+					if containerID == "nosuchcontainer" {
+						return errdefs.NotFound(errors.New("Error: no such container: " + containerID))
+					}
+
+					// TODO(thaJeztah): consider using parallelOperation for restart, similar to "stop" and "remove"
+					mutex.Lock()
+					restarted = append(restarted, containerID)
+					mutex.Unlock()
+					return nil
+				},
+				Version: "1.36",
+			})
+			cmd := NewRestartCommand(cli)
+			cmd.SetOut(io.Discard)
+			cmd.SetErr(io.Discard)
+			cmd.SetArgs(tc.args)
+
+			err := cmd.Execute()
+			if tc.expectedErr != "" {
+				assert.Check(t, is.ErrorContains(err, tc.expectedErr))
+			} else {
+				assert.Check(t, is.Nil(err))
+			}
+			sort.Strings(restarted)
+			assert.Check(t, is.DeepEqual(restarted, tc.restarted))
+		})
+	}
+}