github.com/hms58/moby@v1.13.1/integration-cli/docker_cli_export_import_test.go (about)

     1  package main
     2  
     3  import (
     4  	"os"
     5  	"os/exec"
     6  	"strings"
     7  
     8  	"github.com/docker/docker/pkg/integration/checker"
     9  	"github.com/go-check/check"
    10  )
    11  
    12  // export an image and try to import it into a new one
    13  func (s *DockerSuite) TestExportContainerAndImportImage(c *check.C) {
    14  	testRequires(c, DaemonIsLinux)
    15  	containerID := "testexportcontainerandimportimage"
    16  
    17  	dockerCmd(c, "run", "--name", containerID, "busybox", "true")
    18  
    19  	out, _ := dockerCmd(c, "export", containerID)
    20  
    21  	importCmd := exec.Command(dockerBinary, "import", "-", "repo/testexp:v1")
    22  	importCmd.Stdin = strings.NewReader(out)
    23  	out, _, err := runCommandWithOutput(importCmd)
    24  	c.Assert(err, checker.IsNil, check.Commentf("failed to import image repo/testexp:v1: %s", out))
    25  
    26  	cleanedImageID := strings.TrimSpace(out)
    27  	c.Assert(cleanedImageID, checker.Not(checker.Equals), "", check.Commentf("output should have been an image id"))
    28  }
    29  
    30  // Used to test output flag in the export command
    31  func (s *DockerSuite) TestExportContainerWithOutputAndImportImage(c *check.C) {
    32  	testRequires(c, DaemonIsLinux)
    33  	containerID := "testexportcontainerwithoutputandimportimage"
    34  
    35  	dockerCmd(c, "run", "--name", containerID, "busybox", "true")
    36  	dockerCmd(c, "export", "--output=testexp.tar", containerID)
    37  	defer os.Remove("testexp.tar")
    38  
    39  	out, _, err := runCommandWithOutput(exec.Command("cat", "testexp.tar"))
    40  	c.Assert(err, checker.IsNil, check.Commentf(out))
    41  
    42  	importCmd := exec.Command(dockerBinary, "import", "-", "repo/testexp:v1")
    43  	importCmd.Stdin = strings.NewReader(out)
    44  	out, _, err = runCommandWithOutput(importCmd)
    45  	c.Assert(err, checker.IsNil, check.Commentf("failed to import image repo/testexp:v1: %s", out))
    46  
    47  	cleanedImageID := strings.TrimSpace(out)
    48  	c.Assert(cleanedImageID, checker.Not(checker.Equals), "", check.Commentf("output should have been an image id"))
    49  }