github.com/hustcat/docker@v1.3.3-0.20160314103604-901c67a8eeab/integration-cli/docker_cli_save_load_unix_test.go (about) 1 // +build !windows 2 3 package main 4 5 import ( 6 "io/ioutil" 7 "os" 8 "os/exec" 9 "strings" 10 11 "github.com/docker/docker/pkg/integration/checker" 12 "github.com/go-check/check" 13 "github.com/kr/pty" 14 ) 15 16 // save a repo and try to load it using stdout 17 func (s *DockerSuite) TestSaveAndLoadRepoStdout(c *check.C) { 18 name := "test-save-and-load-repo-stdout" 19 dockerCmd(c, "run", "--name", name, "busybox", "true") 20 21 repoName := "foobar-save-load-test" 22 before, _ := dockerCmd(c, "commit", name, repoName) 23 before = strings.TrimRight(before, "\n") 24 25 tmpFile, err := ioutil.TempFile("", "foobar-save-load-test.tar") 26 c.Assert(err, check.IsNil) 27 defer os.Remove(tmpFile.Name()) 28 29 saveCmd := exec.Command(dockerBinary, "save", repoName) 30 saveCmd.Stdout = tmpFile 31 32 _, err = runCommand(saveCmd) 33 c.Assert(err, check.IsNil) 34 35 tmpFile, err = os.Open(tmpFile.Name()) 36 c.Assert(err, check.IsNil) 37 38 deleteImages(repoName) 39 40 loadCmd := exec.Command(dockerBinary, "load") 41 loadCmd.Stdin = tmpFile 42 43 out, _, err := runCommandWithOutput(loadCmd) 44 c.Assert(err, check.IsNil, check.Commentf(out)) 45 46 after := inspectField(c, repoName, "Id") 47 after = strings.TrimRight(after, "\n") 48 49 c.Assert(after, check.Equals, before) //inspect is not the same after a save / load 50 51 deleteImages(repoName) 52 53 pty, tty, err := pty.Open() 54 c.Assert(err, check.IsNil) 55 cmd := exec.Command(dockerBinary, "save", repoName) 56 cmd.Stdin = tty 57 cmd.Stdout = tty 58 cmd.Stderr = tty 59 c.Assert(cmd.Start(), check.IsNil) 60 c.Assert(cmd.Wait(), check.NotNil) //did not break writing to a TTY 61 62 buf := make([]byte, 1024) 63 64 n, err := pty.Read(buf) 65 c.Assert(err, check.IsNil) //could not read tty output 66 c.Assert(string(buf[:n]), checker.Contains, "Cowardly refusing", check.Commentf("help output is not being yielded", out)) 67 }