github.com/rita33cool1/iot-system-gateway@v0.0.0-20200911033302-e65bde238cc5/docker-engine/integration-cli/docker_cli_inspect_test.go (about)

     1  package main
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"os"
     7  	"strconv"
     8  	"strings"
     9  	"time"
    10  
    11  	"github.com/docker/docker/api/types"
    12  	"github.com/docker/docker/api/types/container"
    13  	"github.com/docker/docker/integration-cli/checker"
    14  	"github.com/go-check/check"
    15  	"github.com/gotestyourself/gotestyourself/icmd"
    16  )
    17  
    18  func checkValidGraphDriver(c *check.C, name string) {
    19  	if name != "devicemapper" && name != "overlay" && name != "vfs" && name != "zfs" && name != "btrfs" && name != "aufs" {
    20  		c.Fatalf("%v is not a valid graph driver name", name)
    21  	}
    22  }
    23  
    24  func (s *DockerSuite) TestInspectImage(c *check.C) {
    25  	testRequires(c, DaemonIsLinux)
    26  	imageTest := "emptyfs"
    27  	// It is important that this ID remain stable. If a code change causes
    28  	// it to be different, this is equivalent to a cache bust when pulling
    29  	// a legacy-format manifest. If the check at the end of this function
    30  	// fails, fix the difference in the image serialization instead of
    31  	// updating this hash.
    32  	imageTestID := "sha256:11f64303f0f7ffdc71f001788132bca5346831939a956e3e975c93267d89a16d"
    33  	id := inspectField(c, imageTest, "Id")
    34  
    35  	c.Assert(id, checker.Equals, imageTestID)
    36  }
    37  
    38  func (s *DockerSuite) TestInspectInt64(c *check.C) {
    39  	dockerCmd(c, "run", "-d", "-m=300M", "--name", "inspectTest", "busybox", "true")
    40  	inspectOut := inspectField(c, "inspectTest", "HostConfig.Memory")
    41  	c.Assert(inspectOut, checker.Equals, "314572800")
    42  }
    43  
    44  func (s *DockerSuite) TestInspectDefault(c *check.C) {
    45  	//Both the container and image are named busybox. docker inspect will fetch the container JSON.
    46  	//If the container JSON is not available, it will go for the image JSON.
    47  
    48  	out, _ := dockerCmd(c, "run", "--name=busybox", "-d", "busybox", "true")
    49  	containerID := strings.TrimSpace(out)
    50  
    51  	inspectOut := inspectField(c, "busybox", "Id")
    52  	c.Assert(strings.TrimSpace(inspectOut), checker.Equals, containerID)
    53  }
    54  
    55  func (s *DockerSuite) TestInspectStatus(c *check.C) {
    56  	out := runSleepingContainer(c, "-d")
    57  	out = strings.TrimSpace(out)
    58  
    59  	inspectOut := inspectField(c, out, "State.Status")
    60  	c.Assert(inspectOut, checker.Equals, "running")
    61  
    62  	// Windows does not support pause/unpause on Windows Server Containers.
    63  	// (RS1 does for Hyper-V Containers, but production CI is not setup for that)
    64  	if testEnv.OSType != "windows" {
    65  		dockerCmd(c, "pause", out)
    66  		inspectOut = inspectField(c, out, "State.Status")
    67  		c.Assert(inspectOut, checker.Equals, "paused")
    68  
    69  		dockerCmd(c, "unpause", out)
    70  		inspectOut = inspectField(c, out, "State.Status")
    71  		c.Assert(inspectOut, checker.Equals, "running")
    72  	}
    73  
    74  	dockerCmd(c, "stop", out)
    75  	inspectOut = inspectField(c, out, "State.Status")
    76  	c.Assert(inspectOut, checker.Equals, "exited")
    77  
    78  }
    79  
    80  func (s *DockerSuite) TestInspectTypeFlagContainer(c *check.C) {
    81  	//Both the container and image are named busybox. docker inspect will fetch container
    82  	//JSON State.Running field. If the field is true, it's a container.
    83  	runSleepingContainer(c, "--name=busybox", "-d")
    84  
    85  	formatStr := "--format={{.State.Running}}"
    86  	out, _ := dockerCmd(c, "inspect", "--type=container", formatStr, "busybox")
    87  	c.Assert(out, checker.Equals, "true\n") // not a container JSON
    88  }
    89  
    90  func (s *DockerSuite) TestInspectTypeFlagWithNoContainer(c *check.C) {
    91  	//Run this test on an image named busybox. docker inspect will try to fetch container
    92  	//JSON. Since there is no container named busybox and --type=container, docker inspect will
    93  	//not try to get the image JSON. It will throw an error.
    94  
    95  	dockerCmd(c, "run", "-d", "busybox", "true")
    96  
    97  	_, _, err := dockerCmdWithError("inspect", "--type=container", "busybox")
    98  	// docker inspect should fail, as there is no container named busybox
    99  	c.Assert(err, checker.NotNil)
   100  }
   101  
   102  func (s *DockerSuite) TestInspectTypeFlagWithImage(c *check.C) {
   103  	//Both the container and image are named busybox. docker inspect will fetch image
   104  	//JSON as --type=image. if there is no image with name busybox, docker inspect
   105  	//will throw an error.
   106  
   107  	dockerCmd(c, "run", "--name=busybox", "-d", "busybox", "true")
   108  
   109  	out, _ := dockerCmd(c, "inspect", "--type=image", "busybox")
   110  	c.Assert(out, checker.Not(checker.Contains), "State") // not an image JSON
   111  }
   112  
   113  func (s *DockerSuite) TestInspectTypeFlagWithInvalidValue(c *check.C) {
   114  	//Both the container and image are named busybox. docker inspect will fail
   115  	//as --type=foobar is not a valid value for the flag.
   116  
   117  	dockerCmd(c, "run", "--name=busybox", "-d", "busybox", "true")
   118  
   119  	out, exitCode, err := dockerCmdWithError("inspect", "--type=foobar", "busybox")
   120  	c.Assert(err, checker.NotNil, check.Commentf("%s", exitCode))
   121  	c.Assert(exitCode, checker.Equals, 1, check.Commentf("%s", err))
   122  	c.Assert(out, checker.Contains, "not a valid value for --type")
   123  }
   124  
   125  func (s *DockerSuite) TestInspectImageFilterInt(c *check.C) {
   126  	testRequires(c, DaemonIsLinux)
   127  	imageTest := "emptyfs"
   128  	out := inspectField(c, imageTest, "Size")
   129  
   130  	size, err := strconv.Atoi(out)
   131  	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect size of the image: %s, %v", out, err))
   132  
   133  	//now see if the size turns out to be the same
   134  	formatStr := fmt.Sprintf("--format={{eq .Size %d}}", size)
   135  	out, _ = dockerCmd(c, "inspect", formatStr, imageTest)
   136  	result, err := strconv.ParseBool(strings.TrimSuffix(out, "\n"))
   137  	c.Assert(err, checker.IsNil)
   138  	c.Assert(result, checker.Equals, true)
   139  }
   140  
   141  func (s *DockerSuite) TestInspectContainerFilterInt(c *check.C) {
   142  	result := icmd.RunCmd(icmd.Cmd{
   143  		Command: []string{dockerBinary, "run", "-i", "-a", "stdin", "busybox", "cat"},
   144  		Stdin:   strings.NewReader("blahblah"),
   145  	})
   146  	result.Assert(c, icmd.Success)
   147  	out := result.Stdout()
   148  	id := strings.TrimSpace(out)
   149  
   150  	out = inspectField(c, id, "State.ExitCode")
   151  
   152  	exitCode, err := strconv.Atoi(out)
   153  	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect exitcode of the container: %s, %v", out, err))
   154  
   155  	//now get the exit code to verify
   156  	formatStr := fmt.Sprintf("--format={{eq .State.ExitCode %d}}", exitCode)
   157  	out, _ = dockerCmd(c, "inspect", formatStr, id)
   158  	inspectResult, err := strconv.ParseBool(strings.TrimSuffix(out, "\n"))
   159  	c.Assert(err, checker.IsNil)
   160  	c.Assert(inspectResult, checker.Equals, true)
   161  }
   162  
   163  func (s *DockerSuite) TestInspectImageGraphDriver(c *check.C) {
   164  	testRequires(c, DaemonIsLinux, Devicemapper)
   165  	imageTest := "emptyfs"
   166  	name := inspectField(c, imageTest, "GraphDriver.Name")
   167  
   168  	checkValidGraphDriver(c, name)
   169  
   170  	deviceID := inspectField(c, imageTest, "GraphDriver.Data.DeviceId")
   171  
   172  	_, err := strconv.Atoi(deviceID)
   173  	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceId of the image: %s, %v", deviceID, err))
   174  
   175  	deviceSize := inspectField(c, imageTest, "GraphDriver.Data.DeviceSize")
   176  
   177  	_, err = strconv.ParseUint(deviceSize, 10, 64)
   178  	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceSize of the image: %s, %v", deviceSize, err))
   179  }
   180  
   181  func (s *DockerSuite) TestInspectContainerGraphDriver(c *check.C) {
   182  	testRequires(c, DaemonIsLinux, Devicemapper)
   183  
   184  	out, _ := dockerCmd(c, "run", "-d", "busybox", "true")
   185  	out = strings.TrimSpace(out)
   186  
   187  	name := inspectField(c, out, "GraphDriver.Name")
   188  
   189  	checkValidGraphDriver(c, name)
   190  
   191  	imageDeviceID := inspectField(c, "busybox", "GraphDriver.Data.DeviceId")
   192  
   193  	deviceID := inspectField(c, out, "GraphDriver.Data.DeviceId")
   194  
   195  	c.Assert(imageDeviceID, checker.Not(checker.Equals), deviceID)
   196  
   197  	_, err := strconv.Atoi(deviceID)
   198  	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceId of the image: %s, %v", deviceID, err))
   199  
   200  	deviceSize := inspectField(c, out, "GraphDriver.Data.DeviceSize")
   201  
   202  	_, err = strconv.ParseUint(deviceSize, 10, 64)
   203  	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceSize of the image: %s, %v", deviceSize, err))
   204  }
   205  
   206  func (s *DockerSuite) TestInspectBindMountPoint(c *check.C) {
   207  	modifier := ",z"
   208  	prefix, slash := getPrefixAndSlashFromDaemonPlatform()
   209  	if testEnv.OSType == "windows" {
   210  		modifier = ""
   211  		// Linux creates the host directory if it doesn't exist. Windows does not.
   212  		os.Mkdir(`c:\data`, os.ModeDir)
   213  	}
   214  
   215  	dockerCmd(c, "run", "-d", "--name", "test", "-v", prefix+slash+"data:"+prefix+slash+"data:ro"+modifier, "busybox", "cat")
   216  
   217  	vol := inspectFieldJSON(c, "test", "Mounts")
   218  
   219  	var mp []types.MountPoint
   220  	err := json.Unmarshal([]byte(vol), &mp)
   221  	c.Assert(err, checker.IsNil)
   222  
   223  	// check that there is only one mountpoint
   224  	c.Assert(mp, check.HasLen, 1)
   225  
   226  	m := mp[0]
   227  
   228  	c.Assert(m.Name, checker.Equals, "")
   229  	c.Assert(m.Driver, checker.Equals, "")
   230  	c.Assert(m.Source, checker.Equals, prefix+slash+"data")
   231  	c.Assert(m.Destination, checker.Equals, prefix+slash+"data")
   232  	if testEnv.OSType != "windows" { // Windows does not set mode
   233  		c.Assert(m.Mode, checker.Equals, "ro"+modifier)
   234  	}
   235  	c.Assert(m.RW, checker.Equals, false)
   236  }
   237  
   238  func (s *DockerSuite) TestInspectNamedMountPoint(c *check.C) {
   239  	prefix, slash := getPrefixAndSlashFromDaemonPlatform()
   240  
   241  	dockerCmd(c, "run", "-d", "--name", "test", "-v", "data:"+prefix+slash+"data", "busybox", "cat")
   242  
   243  	vol := inspectFieldJSON(c, "test", "Mounts")
   244  
   245  	var mp []types.MountPoint
   246  	err := json.Unmarshal([]byte(vol), &mp)
   247  	c.Assert(err, checker.IsNil)
   248  
   249  	// check that there is only one mountpoint
   250  	c.Assert(mp, checker.HasLen, 1)
   251  
   252  	m := mp[0]
   253  
   254  	c.Assert(m.Name, checker.Equals, "data")
   255  	c.Assert(m.Driver, checker.Equals, "local")
   256  	c.Assert(m.Source, checker.Not(checker.Equals), "")
   257  	c.Assert(m.Destination, checker.Equals, prefix+slash+"data")
   258  	c.Assert(m.RW, checker.Equals, true)
   259  }
   260  
   261  // #14947
   262  func (s *DockerSuite) TestInspectTimesAsRFC3339Nano(c *check.C) {
   263  	out, _ := dockerCmd(c, "run", "-d", "busybox", "true")
   264  	id := strings.TrimSpace(out)
   265  	startedAt := inspectField(c, id, "State.StartedAt")
   266  	finishedAt := inspectField(c, id, "State.FinishedAt")
   267  	created := inspectField(c, id, "Created")
   268  
   269  	_, err := time.Parse(time.RFC3339Nano, startedAt)
   270  	c.Assert(err, checker.IsNil)
   271  	_, err = time.Parse(time.RFC3339Nano, finishedAt)
   272  	c.Assert(err, checker.IsNil)
   273  	_, err = time.Parse(time.RFC3339Nano, created)
   274  	c.Assert(err, checker.IsNil)
   275  
   276  	created = inspectField(c, "busybox", "Created")
   277  
   278  	_, err = time.Parse(time.RFC3339Nano, created)
   279  	c.Assert(err, checker.IsNil)
   280  }
   281  
   282  // #15633
   283  func (s *DockerSuite) TestInspectLogConfigNoType(c *check.C) {
   284  	dockerCmd(c, "create", "--name=test", "--log-opt", "max-file=42", "busybox")
   285  	var logConfig container.LogConfig
   286  
   287  	out := inspectFieldJSON(c, "test", "HostConfig.LogConfig")
   288  
   289  	err := json.NewDecoder(strings.NewReader(out)).Decode(&logConfig)
   290  	c.Assert(err, checker.IsNil, check.Commentf("%v", out))
   291  
   292  	c.Assert(logConfig.Type, checker.Equals, "json-file")
   293  	c.Assert(logConfig.Config["max-file"], checker.Equals, "42", check.Commentf("%v", logConfig))
   294  }
   295  
   296  func (s *DockerSuite) TestInspectNoSizeFlagContainer(c *check.C) {
   297  
   298  	//Both the container and image are named busybox. docker inspect will fetch container
   299  	//JSON SizeRw and SizeRootFs field. If there is no flag --size/-s, there are no size fields.
   300  
   301  	runSleepingContainer(c, "--name=busybox", "-d")
   302  
   303  	formatStr := "--format={{.SizeRw}},{{.SizeRootFs}}"
   304  	out, _ := dockerCmd(c, "inspect", "--type=container", formatStr, "busybox")
   305  	c.Assert(strings.TrimSpace(out), check.Equals, "<nil>,<nil>", check.Commentf("Expected not to display size info: %s", out))
   306  }
   307  
   308  func (s *DockerSuite) TestInspectSizeFlagContainer(c *check.C) {
   309  	runSleepingContainer(c, "--name=busybox", "-d")
   310  
   311  	formatStr := "--format='{{.SizeRw}},{{.SizeRootFs}}'"
   312  	out, _ := dockerCmd(c, "inspect", "-s", "--type=container", formatStr, "busybox")
   313  	sz := strings.Split(out, ",")
   314  
   315  	c.Assert(strings.TrimSpace(sz[0]), check.Not(check.Equals), "<nil>")
   316  	c.Assert(strings.TrimSpace(sz[1]), check.Not(check.Equals), "<nil>")
   317  }
   318  
   319  func (s *DockerSuite) TestInspectTemplateError(c *check.C) {
   320  	// Template parsing error for both the container and image.
   321  
   322  	runSleepingContainer(c, "--name=container1", "-d")
   323  
   324  	out, _, err := dockerCmdWithError("inspect", "--type=container", "--format='Format container: {{.ThisDoesNotExist}}'", "container1")
   325  	c.Assert(err, check.Not(check.IsNil))
   326  	c.Assert(out, checker.Contains, "Template parsing error")
   327  
   328  	out, _, err = dockerCmdWithError("inspect", "--type=image", "--format='Format container: {{.ThisDoesNotExist}}'", "busybox")
   329  	c.Assert(err, check.Not(check.IsNil))
   330  	c.Assert(out, checker.Contains, "Template parsing error")
   331  }
   332  
   333  func (s *DockerSuite) TestInspectJSONFields(c *check.C) {
   334  	runSleepingContainer(c, "--name=busybox", "-d")
   335  	out, _, err := dockerCmdWithError("inspect", "--type=container", "--format={{.HostConfig.Dns}}", "busybox")
   336  
   337  	c.Assert(err, check.IsNil)
   338  	c.Assert(out, checker.Equals, "[]\n")
   339  }
   340  
   341  func (s *DockerSuite) TestInspectByPrefix(c *check.C) {
   342  	id := inspectField(c, "busybox", "Id")
   343  	c.Assert(id, checker.HasPrefix, "sha256:")
   344  
   345  	id2 := inspectField(c, id[:12], "Id")
   346  	c.Assert(id, checker.Equals, id2)
   347  
   348  	id3 := inspectField(c, strings.TrimPrefix(id, "sha256:")[:12], "Id")
   349  	c.Assert(id, checker.Equals, id3)
   350  }
   351  
   352  func (s *DockerSuite) TestInspectStopWhenNotFound(c *check.C) {
   353  	runSleepingContainer(c, "--name=busybox1", "-d")
   354  	runSleepingContainer(c, "--name=busybox2", "-d")
   355  	result := dockerCmdWithResult("inspect", "--type=container", "--format='{{.Name}}'", "busybox1", "busybox2", "missing")
   356  
   357  	c.Assert(result.Error, checker.Not(check.IsNil))
   358  	c.Assert(result.Stdout(), checker.Contains, "busybox1")
   359  	c.Assert(result.Stdout(), checker.Contains, "busybox2")
   360  	c.Assert(result.Stderr(), checker.Contains, "Error: No such container: missing")
   361  
   362  	// test inspect would not fast fail
   363  	result = dockerCmdWithResult("inspect", "--type=container", "--format='{{.Name}}'", "missing", "busybox1", "busybox2")
   364  
   365  	c.Assert(result.Error, checker.Not(check.IsNil))
   366  	c.Assert(result.Stdout(), checker.Contains, "busybox1")
   367  	c.Assert(result.Stdout(), checker.Contains, "busybox2")
   368  	c.Assert(result.Stderr(), checker.Contains, "Error: No such container: missing")
   369  }
   370  
   371  func (s *DockerSuite) TestInspectHistory(c *check.C) {
   372  	dockerCmd(c, "run", "--name=testcont", "busybox", "echo", "hello")
   373  	dockerCmd(c, "commit", "-m", "test comment", "testcont", "testimg")
   374  	out, _, err := dockerCmdWithError("inspect", "--format='{{.Comment}}'", "testimg")
   375  	c.Assert(err, check.IsNil)
   376  	c.Assert(out, checker.Contains, "test comment")
   377  }
   378  
   379  func (s *DockerSuite) TestInspectContainerNetworkDefault(c *check.C) {
   380  	testRequires(c, DaemonIsLinux)
   381  
   382  	contName := "test1"
   383  	dockerCmd(c, "run", "--name", contName, "-d", "busybox", "top")
   384  	netOut, _ := dockerCmd(c, "network", "inspect", "--format={{.ID}}", "bridge")
   385  	out := inspectField(c, contName, "NetworkSettings.Networks")
   386  	c.Assert(out, checker.Contains, "bridge")
   387  	out = inspectField(c, contName, "NetworkSettings.Networks.bridge.NetworkID")
   388  	c.Assert(strings.TrimSpace(out), checker.Equals, strings.TrimSpace(netOut))
   389  }
   390  
   391  func (s *DockerSuite) TestInspectContainerNetworkCustom(c *check.C) {
   392  	testRequires(c, DaemonIsLinux)
   393  
   394  	netOut, _ := dockerCmd(c, "network", "create", "net1")
   395  	dockerCmd(c, "run", "--name=container1", "--net=net1", "-d", "busybox", "top")
   396  	out := inspectField(c, "container1", "NetworkSettings.Networks")
   397  	c.Assert(out, checker.Contains, "net1")
   398  	out = inspectField(c, "container1", "NetworkSettings.Networks.net1.NetworkID")
   399  	c.Assert(strings.TrimSpace(out), checker.Equals, strings.TrimSpace(netOut))
   400  }
   401  
   402  func (s *DockerSuite) TestInspectRootFS(c *check.C) {
   403  	out, _, err := dockerCmdWithError("inspect", "busybox")
   404  	c.Assert(err, check.IsNil)
   405  
   406  	var imageJSON []types.ImageInspect
   407  	err = json.Unmarshal([]byte(out), &imageJSON)
   408  	c.Assert(err, checker.IsNil)
   409  
   410  	c.Assert(len(imageJSON[0].RootFS.Layers), checker.GreaterOrEqualThan, 1)
   411  }
   412  
   413  func (s *DockerSuite) TestInspectAmpersand(c *check.C) {
   414  	testRequires(c, DaemonIsLinux)
   415  
   416  	name := "test"
   417  	out, _ := dockerCmd(c, "run", "--name", name, "--env", `TEST_ENV="soanni&rtr"`, "busybox", "env")
   418  	c.Assert(out, checker.Contains, `soanni&rtr`)
   419  	out, _ = dockerCmd(c, "inspect", name)
   420  	c.Assert(out, checker.Contains, `soanni&rtr`)
   421  }
   422  
   423  func (s *DockerSuite) TestInspectPlugin(c *check.C) {
   424  	testRequires(c, DaemonIsLinux, IsAmd64, Network)
   425  	_, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", pNameWithTag)
   426  	c.Assert(err, checker.IsNil)
   427  
   428  	out, _, err := dockerCmdWithError("inspect", "--type", "plugin", "--format", "{{.Name}}", pNameWithTag)
   429  	c.Assert(err, checker.IsNil)
   430  	c.Assert(strings.TrimSpace(out), checker.Equals, pNameWithTag)
   431  
   432  	out, _, err = dockerCmdWithError("inspect", "--format", "{{.Name}}", pNameWithTag)
   433  	c.Assert(err, checker.IsNil)
   434  	c.Assert(strings.TrimSpace(out), checker.Equals, pNameWithTag)
   435  
   436  	// Even without tag the inspect still work
   437  	out, _, err = dockerCmdWithError("inspect", "--type", "plugin", "--format", "{{.Name}}", pNameWithTag)
   438  	c.Assert(err, checker.IsNil)
   439  	c.Assert(strings.TrimSpace(out), checker.Equals, pNameWithTag)
   440  
   441  	out, _, err = dockerCmdWithError("inspect", "--format", "{{.Name}}", pNameWithTag)
   442  	c.Assert(err, checker.IsNil)
   443  	c.Assert(strings.TrimSpace(out), checker.Equals, pNameWithTag)
   444  
   445  	_, _, err = dockerCmdWithError("plugin", "disable", pNameWithTag)
   446  	c.Assert(err, checker.IsNil)
   447  
   448  	out, _, err = dockerCmdWithError("plugin", "remove", pNameWithTag)
   449  	c.Assert(err, checker.IsNil)
   450  	c.Assert(out, checker.Contains, pNameWithTag)
   451  }
   452  
   453  // Test case for 29185
   454  func (s *DockerSuite) TestInspectUnknownObject(c *check.C) {
   455  	// This test should work on both Windows and Linux
   456  	out, _, err := dockerCmdWithError("inspect", "foobar")
   457  	c.Assert(err, checker.NotNil)
   458  	c.Assert(out, checker.Contains, "Error: No such object: foobar")
   459  	c.Assert(err.Error(), checker.Contains, "Error: No such object: foobar")
   460  }
   461  
   462  func (s *DockerSuite) TestInspectInvalidReference(c *check.C) {
   463  	// This test should work on both Windows and Linux
   464  	out, _, err := dockerCmdWithError("inspect", "FooBar")
   465  	c.Assert(err, checker.NotNil)
   466  	c.Assert(out, checker.Contains, "no such image: FooBar")
   467  }