// save a repo and try to load it using stdout
func TestSaveAndLoadRepoStdout(t *testing.T) {
runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "true")
out, _, err := runCommandWithOutput(runCmd)
if err != nil {
t.Fatalf("failed to create a container: %s, %v", out, err)
}
cleanedContainerID := stripTrailingCharacters(out)
repoName := "foobar-save-load-test"
inspectCmd := exec.Command(dockerBinary, "inspect", cleanedContainerID)
if out, _, err = runCommandWithOutput(inspectCmd); err != nil {
t.Fatalf("output should've been a container id: %s, %v", out, err)
}
commitCmd := exec.Command(dockerBinary, "commit", cleanedContainerID, repoName)
if out, _, err = runCommandWithOutput(commitCmd); err != nil {
t.Fatalf("failed to commit container: %s, %v", out, err)
}
inspectCmd = exec.Command(dockerBinary, "inspect", repoName)
before, _, err := runCommandWithOutput(inspectCmd)
if err != nil {
t.Fatalf("the repo should exist before saving it: %s, %v", before, err)
}
saveCmdTemplate := `%v save %v > /tmp/foobar-save-load-test.tar`
saveCmdFinal := fmt.Sprintf(saveCmdTemplate, dockerBinary, repoName)
saveCmd := exec.Command("bash", "-c", saveCmdFinal)
if out, _, err = runCommandWithOutput(saveCmd); err != nil {
t.Fatalf("failed to save repo: %s, %v", out, err)
}
deleteImages(repoName)
loadCmdFinal := `cat /tmp/foobar-save-load-test.tar | docker load`
loadCmd := exec.Command("bash", "-c", loadCmdFinal)
if out, _, err = runCommandWithOutput(loadCmd); err != nil {
t.Fatalf("failed to load repo: %s, %v", out, err)
}
inspectCmd = exec.Command(dockerBinary, "inspect", repoName)
after, _, err := runCommandWithOutput(inspectCmd)
if err != nil {
t.Fatalf("the repo should exist after loading it: %s %v", after, err)
}
if before != after {
t.Fatalf("inspect is not the same after a save / load")
}
deleteContainer(cleanedContainerID)
deleteImages(repoName)
os.Remove("/tmp/foobar-save-load-test.tar")
logDone("save - save/load a repo using stdout")
pty, tty, err := pty.Open()
if err != nil {
t.Fatalf("Could not open pty: %v", err)
}
cmd := exec.Command(dockerBinary, "save", repoName)
cmd.Stdin = tty
cmd.Stdout = tty
cmd.Stderr = tty
if err := cmd.Start(); err != nil {
t.Fatalf("start err: %v", err)
}
if err := cmd.Wait(); err == nil {
t.Fatal("did not break writing to a TTY")
}
buf := make([]byte, 1024)
n, err := pty.Read(buf)
if err != nil {
t.Fatal("could not read tty output")
}
if !bytes.Contains(buf[:n], []byte("Cowardly refusing")) {
t.Fatal("help output is not being yielded", out)
}
logDone("save - do not save to a tty")
}
// save a repo and try to load it using stdout
func (s *DockerSuite) TestSaveAndLoadRepoStdout(c *check.C) {
name := "test-save-and-load-repo-stdout"
runCmd := exec.Command(dockerBinary, "run", "--name", name, "busybox", "true")
out, _, err := runCommandWithOutput(runCmd)
if err != nil {
c.Fatalf("failed to create a container: %s, %v", out, err)
}
repoName := "foobar-save-load-test"
commitCmd := exec.Command(dockerBinary, "commit", name, repoName)
if out, _, err = runCommandWithOutput(commitCmd); err != nil {
c.Fatalf("failed to commit container: %s, %v", out, err)
}
inspectCmd := exec.Command(dockerBinary, "inspect", repoName)
before, _, err := runCommandWithOutput(inspectCmd)
if err != nil {
c.Fatalf("the repo should exist before saving it: %s, %v", before, err)
}
tmpFile, err := ioutil.TempFile("", "foobar-save-load-test.tar")
c.Assert(err, check.IsNil)
defer os.Remove(tmpFile.Name())
saveCmd := exec.Command(dockerBinary, "save", repoName)
saveCmd.Stdout = tmpFile
if _, err = runCommand(saveCmd); err != nil {
c.Fatalf("failed to save repo: %v", err)
}
tmpFile, err = os.Open(tmpFile.Name())
c.Assert(err, check.IsNil)
deleteImages(repoName)
loadCmd := exec.Command(dockerBinary, "load")
loadCmd.Stdin = tmpFile
if out, _, err = runCommandWithOutput(loadCmd); err != nil {
c.Fatalf("failed to load repo: %s, %v", out, err)
}
inspectCmd = exec.Command(dockerBinary, "inspect", repoName)
after, _, err := runCommandWithOutput(inspectCmd)
if err != nil {
c.Fatalf("the repo should exist after loading it: %s %v", after, err)
}
if before != after {
c.Fatalf("inspect is not the same after a save / load")
}
deleteImages(repoName)
pty, tty, err := pty.Open()
if err != nil {
c.Fatalf("Could not open pty: %v", err)
}
cmd := exec.Command(dockerBinary, "save", repoName)
cmd.Stdin = tty
cmd.Stdout = tty
cmd.Stderr = tty
if err := cmd.Start(); err != nil {
c.Fatalf("start err: %v", err)
}
if err := cmd.Wait(); err == nil {
c.Fatal("did not break writing to a TTY")
}
buf := make([]byte, 1024)
n, err := pty.Read(buf)
if err != nil {
c.Fatal("could not read tty output")
}
if !bytes.Contains(buf[:n], []byte("Cowardly refusing")) {
c.Fatal("help output is not being yielded", out)
}
}