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  }