github.com/baris/docker@v1.7.0/integration-cli/docker_cli_save_load_unix_test.go (about) 1 // +build !windows 2 3 package main 4 5 import ( 6 "bytes" 7 "io/ioutil" 8 "os" 9 "os/exec" 10 11 "github.com/docker/docker/vendor/src/github.com/kr/pty" 12 "github.com/go-check/check" 13 ) 14 15 // save a repo and try to load it using stdout 16 func (s *DockerSuite) TestSaveAndLoadRepoStdout(c *check.C) { 17 name := "test-save-and-load-repo-stdout" 18 runCmd := exec.Command(dockerBinary, "run", "--name", name, "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 repoName := "foobar-save-load-test" 25 26 commitCmd := exec.Command(dockerBinary, "commit", name, repoName) 27 if out, _, err = runCommandWithOutput(commitCmd); err != nil { 28 c.Fatalf("failed to commit container: %s, %v", out, err) 29 } 30 31 inspectCmd := exec.Command(dockerBinary, "inspect", repoName) 32 before, _, err := runCommandWithOutput(inspectCmd) 33 if err != nil { 34 c.Fatalf("the repo should exist before saving it: %s, %v", before, err) 35 } 36 37 tmpFile, err := ioutil.TempFile("", "foobar-save-load-test.tar") 38 c.Assert(err, check.IsNil) 39 defer os.Remove(tmpFile.Name()) 40 41 saveCmd := exec.Command(dockerBinary, "save", repoName) 42 saveCmd.Stdout = tmpFile 43 44 if _, err = runCommand(saveCmd); err != nil { 45 c.Fatalf("failed to save repo: %v", err) 46 } 47 48 tmpFile, err = os.Open(tmpFile.Name()) 49 c.Assert(err, check.IsNil) 50 51 deleteImages(repoName) 52 53 loadCmd := exec.Command(dockerBinary, "load") 54 loadCmd.Stdin = tmpFile 55 56 if out, _, err = runCommandWithOutput(loadCmd); err != nil { 57 c.Fatalf("failed to load repo: %s, %v", out, err) 58 } 59 60 inspectCmd = exec.Command(dockerBinary, "inspect", repoName) 61 after, _, err := runCommandWithOutput(inspectCmd) 62 if err != nil { 63 c.Fatalf("the repo should exist after loading it: %s %v", after, err) 64 } 65 66 if before != after { 67 c.Fatalf("inspect is not the same after a save / load") 68 } 69 70 deleteImages(repoName) 71 72 pty, tty, err := pty.Open() 73 if err != nil { 74 c.Fatalf("Could not open pty: %v", err) 75 } 76 cmd := exec.Command(dockerBinary, "save", repoName) 77 cmd.Stdin = tty 78 cmd.Stdout = tty 79 cmd.Stderr = tty 80 if err := cmd.Start(); err != nil { 81 c.Fatalf("start err: %v", err) 82 } 83 if err := cmd.Wait(); err == nil { 84 c.Fatal("did not break writing to a TTY") 85 } 86 87 buf := make([]byte, 1024) 88 89 n, err := pty.Read(buf) 90 if err != nil { 91 c.Fatal("could not read tty output") 92 } 93 94 if !bytes.Contains(buf[:n], []byte("Cowardly refusing")) { 95 c.Fatal("help output is not being yielded", out) 96 } 97 98 }