github.com/guilhermebr/docker@v1.4.2-0.20150428121140-67da055cebca/integration-cli/docker_cli_save_load_unix_test.go (about) 1 // +build !windows 2 3 package main 4 5 import ( 6 "bytes" 7 "fmt" 8 "os" 9 "os/exec" 10 "strings" 11 12 "github.com/docker/docker/vendor/src/github.com/kr/pty" 13 "github.com/go-check/check" 14 ) 15 16 // save a repo and try to load it using stdout 17 func (s *DockerSuite) TestSaveAndLoadRepoStdout(c *check.C) { 18 runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "true") 19 out, _, err := runCommandWithOutput(runCmd) 20 if err != nil { 21 c.Fatalf("failed to create a container: %s, %v", out, err) 22 } 23 24 cleanedContainerID := strings.TrimSpace(out) 25 26 repoName := "foobar-save-load-test" 27 28 inspectCmd := exec.Command(dockerBinary, "inspect", cleanedContainerID) 29 if out, _, err = runCommandWithOutput(inspectCmd); err != nil { 30 c.Fatalf("output should've been a container id: %s, %v", out, err) 31 } 32 33 commitCmd := exec.Command(dockerBinary, "commit", cleanedContainerID, repoName) 34 if out, _, err = runCommandWithOutput(commitCmd); err != nil { 35 c.Fatalf("failed to commit container: %s, %v", out, err) 36 } 37 38 inspectCmd = exec.Command(dockerBinary, "inspect", repoName) 39 before, _, err := runCommandWithOutput(inspectCmd) 40 if err != nil { 41 c.Fatalf("the repo should exist before saving it: %s, %v", before, err) 42 } 43 44 saveCmdTemplate := `%v save %v > /tmp/foobar-save-load-test.tar` 45 saveCmdFinal := fmt.Sprintf(saveCmdTemplate, dockerBinary, repoName) 46 saveCmd := exec.Command("bash", "-c", saveCmdFinal) 47 if out, _, err = runCommandWithOutput(saveCmd); err != nil { 48 c.Fatalf("failed to save repo: %s, %v", out, err) 49 } 50 51 deleteImages(repoName) 52 53 loadCmdFinal := `cat /tmp/foobar-save-load-test.tar | docker load` 54 loadCmd := exec.Command("bash", "-c", loadCmdFinal) 55 if out, _, err = runCommandWithOutput(loadCmd); err != nil { 56 c.Fatalf("failed to load repo: %s, %v", out, err) 57 } 58 59 inspectCmd = exec.Command(dockerBinary, "inspect", repoName) 60 after, _, err := runCommandWithOutput(inspectCmd) 61 if err != nil { 62 c.Fatalf("the repo should exist after loading it: %s %v", after, err) 63 } 64 65 if before != after { 66 c.Fatalf("inspect is not the same after a save / load") 67 } 68 69 deleteContainer(cleanedContainerID) 70 deleteImages(repoName) 71 72 os.Remove("/tmp/foobar-save-load-test.tar") 73 74 pty, tty, err := pty.Open() 75 if err != nil { 76 c.Fatalf("Could not open pty: %v", err) 77 } 78 cmd := exec.Command(dockerBinary, "save", repoName) 79 cmd.Stdin = tty 80 cmd.Stdout = tty 81 cmd.Stderr = tty 82 if err := cmd.Start(); err != nil { 83 c.Fatalf("start err: %v", err) 84 } 85 if err := cmd.Wait(); err == nil { 86 c.Fatal("did not break writing to a TTY") 87 } 88 89 buf := make([]byte, 1024) 90 91 n, err := pty.Read(buf) 92 if err != nil { 93 c.Fatal("could not read tty output") 94 } 95 96 if !bytes.Contains(buf[:n], []byte("Cowardly refusing")) { 97 c.Fatal("help output is not being yielded", out) 98 } 99 100 }