@@ -9,20 +9,25 @@ import (

 	"time"

 	"github.com/docker/docker/api/types"

+	"github.com/docker/docker/pkg/integration/checker"

 	"github.com/docker/docker/runconfig"

 	"github.com/go-check/check"

 )

+func checkValidGraphDriver(c *check.C, name string) {

+	if name != "devicemapper" && name != "overlay" && name != "vfs" && name != "zfs" && name != "btrfs" && name != "aufs" {

+		c.Fatalf("%v is not a valid graph driver name", name)

+	}

+}

+

 func (s *DockerSuite) TestInspectImage(c *check.C) {

 	testRequires(c, DaemonIsLinux)

 	imageTest := "emptyfs"

 	imageTestID := "511136ea3c5a64f264b78b5433614aec563103b4d4702f3ba7d4d2698e22c158"

 	id, err := inspectField(imageTest, "Id")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

-	if id != imageTestID {

-		c.Fatalf("Expected id: %s for image: %s but received id: %s", imageTestID, imageTest, id)

-	}

+	c.Assert(id, checker.Equals, imageTestID)

 }

 func (s *DockerSuite) TestInspectInt64(c *check.C) {

@@ -31,10 +36,7 @@ func (s *DockerSuite) TestInspectInt64(c *check.C) {

 	dockerCmd(c, "run", "-d", "-m=300M", "--name", "inspectTest", "busybox", "true")

 	inspectOut, err := inspectField("inspectTest", "HostConfig.Memory")

 	c.Assert(err, check.IsNil)

-

-	if inspectOut != "314572800" {

-		c.Fatalf("inspect got wrong value, got: %q, expected: 314572800", inspectOut)

-	}

+	c.Assert(inspectOut, checker.Equals, "314572800")

 }

 func (s *DockerSuite) TestInspectDefault(c *check.C) {

@@ -53,31 +55,24 @@ func (s *DockerSuite) TestInspectStatus(c *check.C) {

 	out = strings.TrimSpace(out)

 	inspectOut, err := inspectField(out, "State.Status")

-	c.Assert(err, check.IsNil)

-	if inspectOut != "running" {

-		c.Fatalf("inspect got wrong status, got: %q, expected: running", inspectOut)

-	}

+	c.Assert(err, checker.IsNil)

+	c.Assert(inspectOut, checker.Equals, "running")

 	dockerCmd(c, "pause", out)

 	inspectOut, err = inspectField(out, "State.Status")

-	c.Assert(err, check.IsNil)

-	if inspectOut != "paused" {

-		c.Fatalf("inspect got wrong status, got: %q, expected: paused", inspectOut)

-	}

+	c.Assert(err, checker.IsNil)

+	c.Assert(inspectOut, checker.Equals, "paused")

 	dockerCmd(c, "unpause", out)

 	inspectOut, err = inspectField(out, "State.Status")

-	c.Assert(err, check.IsNil)

-	if inspectOut != "running" {

-		c.Fatalf("inspect got wrong status, got: %q, expected: running", inspectOut)

-	}

+	c.Assert(err, checker.IsNil)

+	c.Assert(inspectOut, checker.Equals, "running")

 	dockerCmd(c, "stop", out)

 	inspectOut, err = inspectField(out, "State.Status")

-	c.Assert(err, check.IsNil)

-	if inspectOut != "exited" {

-		c.Fatalf("inspect got wrong status, got: %q, expected: exited", inspectOut)

-	}

+	c.Assert(err, checker.IsNil)

+	c.Assert(inspectOut, checker.Equals, "exited")

+

 }

 func (s *DockerSuite) TestInspectTypeFlagContainer(c *check.C) {

@@ -88,14 +83,8 @@ func (s *DockerSuite) TestInspectTypeFlagContainer(c *check.C) {

 	dockerCmd(c, "run", "--name=busybox", "-d", "busybox", "top")

 	formatStr := fmt.Sprintf("--format='{{.State.Running}}'")

-	out, exitCode, err := dockerCmdWithError("inspect", "--type=container", formatStr, "busybox")

-	if exitCode != 0 || err != nil {

-		c.Fatalf("failed to inspect container: %s, %v", out, err)

-	}

-

-	if out != "true\n" {

-		c.Fatal("not a container JSON")

-	}

+	out, _ := dockerCmd(c, "inspect", "--type=container", formatStr, "busybox")

+	c.Assert(out, checker.Equals, "true\n") // not a container JSON

 }

 func (s *DockerSuite) TestInspectTypeFlagWithNoContainer(c *check.C) {

@@ -106,10 +95,9 @@ func (s *DockerSuite) TestInspectTypeFlagWithNoContainer(c *check.C) {

 	dockerCmd(c, "run", "-d", "busybox", "true")

-	_, exitCode, err := dockerCmdWithError("inspect", "--type=container", "busybox")

-	if exitCode == 0 || err == nil {

-		c.Fatalf("docker inspect should have failed, as there is no container named busybox")

-	}

+	_, _, err := dockerCmdWithError("inspect", "--type=container", "busybox")

+	// docker inspect should fail, as there is no container named busybox

+	c.Assert(err, checker.NotNil)

 }

 func (s *DockerSuite) TestInspectTypeFlagWithImage(c *check.C) {

@@ -120,14 +108,8 @@ func (s *DockerSuite) TestInspectTypeFlagWithImage(c *check.C) {

 	dockerCmd(c, "run", "--name=busybox", "-d", "busybox", "true")

-	out, exitCode, err := dockerCmdWithError("inspect", "--type=image", "busybox")

-	if exitCode != 0 || err != nil {

-		c.Fatalf("failed to inspect image: %s, %v", out, err)

-	}

-

-	if strings.Contains(out, "State") {

-		c.Fatal("not an image JSON")

-	}

+	out, _ := dockerCmd(c, "inspect", "--type=image", "busybox")

+	c.Assert(out, checker.Not(checker.Contains), "State") // not an image JSON

 }

 func (s *DockerSuite) TestInspectTypeFlagWithInvalidValue(c *check.C) {

@@ -138,33 +120,26 @@ func (s *DockerSuite) TestInspectTypeFlagWithInvalidValue(c *check.C) {

 	dockerCmd(c, "run", "--name=busybox", "-d", "busybox", "true")

 	out, exitCode, err := dockerCmdWithError("inspect", "--type=foobar", "busybox")

-	if exitCode != 0 || err != nil {

-		if !strings.Contains(out, "not a valid value for --type") {

-			c.Fatalf("failed to inspect image: %s, %v", out, err)

-		}

-	}

+	c.Assert(err, checker.NotNil, check.Commentf("%s", exitCode))

+	c.Assert(exitCode, checker.Equals, 1, check.Commentf("%s", err))

+	c.Assert(out, checker.Contains, "not a valid value for --type")

 }

 func (s *DockerSuite) TestInspectImageFilterInt(c *check.C) {

 	testRequires(c, DaemonIsLinux)

 	imageTest := "emptyfs"

 	out, err := inspectField(imageTest, "Size")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	size, err := strconv.Atoi(out)

-	if err != nil {

-		c.Fatalf("failed to inspect size of the image: %s, %v", out, err)

-	}

+	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect size of the image: %s, %v", out, err))

 	//now see if the size turns out to be the same

 	formatStr := fmt.Sprintf("--format='{{eq .Size %d}}'", size)

-	out, exitCode, err := dockerCmdWithError("inspect", formatStr, imageTest)

-	if exitCode != 0 || err != nil {

-		c.Fatalf("failed to inspect image: %s, %v", out, err)

-	}

-	if result, err := strconv.ParseBool(strings.TrimSuffix(out, "\n")); err != nil || !result {

-		c.Fatalf("Expected size: %d for image: %s but received size: %s", size, imageTest, strings.TrimSuffix(out, "\n"))

-	}

+	out, _ = dockerCmd(c, "inspect", formatStr, imageTest)

+	result, err := strconv.ParseBool(strings.TrimSuffix(out, "\n"))

+	c.Assert(err, checker.IsNil)

+	c.Assert(result, checker.Equals, true)

 }

 func (s *DockerSuite) TestInspectContainerFilterInt(c *check.C) {

@@ -172,57 +147,47 @@ func (s *DockerSuite) TestInspectContainerFilterInt(c *check.C) {

 	runCmd := exec.Command(dockerBinary, "run", "-i", "-a", "stdin", "busybox", "cat")

 	runCmd.Stdin = strings.NewReader("blahblah")

 	out, _, _, err := runCommandWithStdoutStderr(runCmd)

-	if err != nil {

-		c.Fatalf("failed to run container: %v, output: %q", err, out)

-	}

+	c.Assert(err, checker.IsNil, check.Commentf("failed to run container: %v, output: %q", err, out))

 	id := strings.TrimSpace(out)

 	out, err = inspectField(id, "State.ExitCode")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	exitCode, err := strconv.Atoi(out)

-	if err != nil {

-		c.Fatalf("failed to inspect exitcode of the container: %s, %v", out, err)

-	}

+	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect exitcode of the container: %s, %v", out, err))

 	//now get the exit code to verify

 	formatStr := fmt.Sprintf("--format='{{eq .State.ExitCode %d}}'", exitCode)

 	out, _ = dockerCmd(c, "inspect", formatStr, id)

-	if result, err := strconv.ParseBool(strings.TrimSuffix(out, "\n")); err != nil || !result {

-		c.Fatalf("Expected exitcode: %d for container: %s", exitCode, id)

-	}

+	result, err := strconv.ParseBool(strings.TrimSuffix(out, "\n"))

+	c.Assert(err, checker.IsNil)

+	c.Assert(result, checker.Equals, true)

 }

 func (s *DockerSuite) TestInspectImageGraphDriver(c *check.C) {

 	testRequires(c, DaemonIsLinux)

 	imageTest := "emptyfs"

 	name, err := inspectField(imageTest, "GraphDriver.Name")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

-	if name != "devicemapper" && name != "overlay" && name != "vfs" && name != "zfs" && name != "btrfs" && name != "aufs" {

-		c.Fatalf("%v is not a valid graph driver name", name)

-	}

+	checkValidGraphDriver(c, name)

 	if name != "devicemapper" {

-		return

+		c.Skip("requires devicemapper graphdriver")

 	}

 	deviceID, err := inspectField(imageTest, "GraphDriver.Data.DeviceId")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = strconv.Atoi(deviceID)

-	if err != nil {

-		c.Fatalf("failed to inspect DeviceId of the image: %s, %v", deviceID, err)

-	}

+	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceId of the image: %s, %v", deviceID, err))

 	deviceSize, err := inspectField(imageTest, "GraphDriver.Data.DeviceSize")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = strconv.ParseUint(deviceSize, 10, 64)

-	if err != nil {

-		c.Fatalf("failed to inspect DeviceSize of the image: %s, %v", deviceSize, err)

-	}

+	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceSize of the image: %s, %v", deviceSize, err))

 }

 func (s *DockerSuite) TestInspectContainerGraphDriver(c *check.C) {

@@ -231,31 +196,25 @@ func (s *DockerSuite) TestInspectContainerGraphDriver(c *check.C) {

 	out = strings.TrimSpace(out)

 	name, err := inspectField(out, "GraphDriver.Name")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

-	if name != "devicemapper" && name != "overlay" && name != "vfs" && name != "zfs" && name != "btrfs" && name != "aufs" {

-		c.Fatalf("%v is not a valid graph driver name", name)

-	}

+	checkValidGraphDriver(c, name)

 	if name != "devicemapper" {

 		return

 	}

 	deviceID, err := inspectField(out, "GraphDriver.Data.DeviceId")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = strconv.Atoi(deviceID)

-	if err != nil {

-		c.Fatalf("failed to inspect DeviceId of the image: %s, %v", deviceID, err)

-	}

+	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceId of the image: %s, %v", deviceID, err))

 	deviceSize, err := inspectField(out, "GraphDriver.Data.DeviceSize")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = strconv.ParseUint(deviceSize, 10, 64)

-	if err != nil {

-		c.Fatalf("failed to inspect DeviceSize of the image: %s, %v", deviceSize, err)

-	}

+	c.Assert(err, checker.IsNil, check.Commentf("failed to inspect DeviceSize of the image: %s, %v", deviceSize, err))

 }

 func (s *DockerSuite) TestInspectBindMountPoint(c *check.C) {

@@ -263,41 +222,23 @@ func (s *DockerSuite) TestInspectBindMountPoint(c *check.C) {

 	dockerCmd(c, "run", "-d", "--name", "test", "-v", "/data:/data:ro,z", "busybox", "cat")

 	vol, err := inspectFieldJSON("test", "Mounts")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	var mp []types.MountPoint

 	err = unmarshalJSON([]byte(vol), &mp)

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

-	if len(mp) != 1 {

-		c.Fatalf("Expected 1 mount point, was %v\n", len(mp))

-	}

+	// check that there is only one mountpoint

+	c.Assert(mp, check.HasLen, 1)

 	m := mp[0]

-	if m.Name != "" {

-		c.Fatal("Expected name to be empty")

-	}

-

-	if m.Driver != "" {

-		c.Fatal("Expected driver to be empty")

-	}

-

-	if m.Source != "/data" {

-		c.Fatalf("Expected source /data, was %s\n", m.Source)

-	}

-

-	if m.Destination != "/data" {

-		c.Fatalf("Expected destination /data, was %s\n", m.Destination)

-	}

-

-	if m.Mode != "ro,z" {

-		c.Fatalf("Expected mode `ro,z`, was %s\n", m.Mode)

-	}

-

-	if m.RW != false {

-		c.Fatalf("Expected rw to be false")

-	}

+	c.Assert(m.Name, checker.Equals, "")

+	c.Assert(m.Driver, checker.Equals, "")

+	c.Assert(m.Source, checker.Equals, "/data")

+	c.Assert(m.Destination, checker.Equals, "/data")

+	c.Assert(m.Mode, checker.Equals, "ro,z")

+	c.Assert(m.RW, checker.Equals, false)

 }

 // #14947

@@ -306,24 +247,24 @@ func (s *DockerSuite) TestInspectTimesAsRFC3339Nano(c *check.C) {

 	out, _ := dockerCmd(c, "run", "-d", "busybox", "true")

 	id := strings.TrimSpace(out)

 	startedAt, err := inspectField(id, "State.StartedAt")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	finishedAt, err := inspectField(id, "State.FinishedAt")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	created, err := inspectField(id, "Created")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = time.Parse(time.RFC3339Nano, startedAt)

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = time.Parse(time.RFC3339Nano, finishedAt)

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = time.Parse(time.RFC3339Nano, created)

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	created, err = inspectField("busybox", "Created")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 	_, err = time.Parse(time.RFC3339Nano, created)

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil)

 }

 // #15633

@@ -333,13 +274,13 @@ func (s *DockerSuite) TestInspectLogConfigNoType(c *check.C) {

 	var logConfig runconfig.LogConfig

 	out, err := inspectFieldJSON("test", "HostConfig.LogConfig")

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil, check.Commentf("%v", out))

 	err = json.NewDecoder(strings.NewReader(out)).Decode(&logConfig)

-	c.Assert(err, check.IsNil)

+	c.Assert(err, checker.IsNil, check.Commentf("%v", out))

-	c.Assert(logConfig.Type, check.Equals, "json-file")

-	c.Assert(logConfig.Config["max-file"], check.Equals, "42", check.Commentf("%v", logConfig))

+	c.Assert(logConfig.Type, checker.Equals, "json-file")

+	c.Assert(logConfig.Config["max-file"], checker.Equals, "42", check.Commentf("%v", logConfig))

 }

 func (s *DockerSuite) TestInspectNoSizeFlagContainer(c *check.C) {