github.com/hayajo/docker@v1.9.1/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  
    10  	"github.com/docker/docker/pkg/integration/checker"
    11  	"github.com/go-check/check"
    12  	"github.com/kr/pty"
    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  	dockerCmd(c, "run", "--name", name, "busybox", "true")
    19  
    20  	repoName := "foobar-save-load-test"
    21  	out, _ := dockerCmd(c, "commit", name, repoName)
    22  
    23  	before, _ := dockerCmd(c, "inspect", repoName)
    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, _ := dockerCmd(c, "inspect", repoName)
    47  
    48  	c.Assert(before, check.Equals, after) //inspect is not the same after a save / load
    49  
    50  	deleteImages(repoName)
    51  
    52  	pty, tty, err := pty.Open()
    53  	c.Assert(err, check.IsNil)
    54  	cmd := exec.Command(dockerBinary, "save", repoName)
    55  	cmd.Stdin = tty
    56  	cmd.Stdout = tty
    57  	cmd.Stderr = tty
    58  	c.Assert(cmd.Start(), check.IsNil)
    59  	c.Assert(cmd.Wait(), check.NotNil) //did not break writing to a TTY
    60  
    61  	buf := make([]byte, 1024)
    62  
    63  	n, err := pty.Read(buf)
    64  	c.Assert(err, check.IsNil) //could not read tty output
    65  	c.Assert(string(buf[:n]), checker.Contains, "Cowardly refusing", check.Commentf("help output is not being yielded", out))
    66  }