github.com/docker/docker-ce@v17.12.1-ce-rc2+incompatible/components/engine/integration-cli/docker_cli_export_import_test.go (about)

     1  package main
     2  
     3  import (
     4  	"os"
     5  	"strings"
     6  
     7  	"github.com/docker/docker/integration-cli/checker"
     8  	"github.com/go-check/check"
     9  	"github.com/gotestyourself/gotestyourself/icmd"
    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  	result := icmd.RunCmd(icmd.Cmd{
    22  		Command: []string{dockerBinary, "import", "-", "repo/testexp:v1"},
    23  		Stdin:   strings.NewReader(out),
    24  	})
    25  	result.Assert(c, icmd.Success)
    26  
    27  	cleanedImageID := strings.TrimSpace(result.Combined())
    28  	c.Assert(cleanedImageID, checker.Not(checker.Equals), "", check.Commentf("output should have been an image id"))
    29  }
    30  
    31  // Used to test output flag in the export command
    32  func (s *DockerSuite) TestExportContainerWithOutputAndImportImage(c *check.C) {
    33  	testRequires(c, DaemonIsLinux)
    34  	containerID := "testexportcontainerwithoutputandimportimage"
    35  
    36  	dockerCmd(c, "run", "--name", containerID, "busybox", "true")
    37  	dockerCmd(c, "export", "--output=testexp.tar", containerID)
    38  	defer os.Remove("testexp.tar")
    39  
    40  	resultCat := icmd.RunCommand("cat", "testexp.tar")
    41  	resultCat.Assert(c, icmd.Success)
    42  
    43  	result := icmd.RunCmd(icmd.Cmd{
    44  		Command: []string{dockerBinary, "import", "-", "repo/testexp:v1"},
    45  		Stdin:   strings.NewReader(resultCat.Combined()),
    46  	})
    47  	result.Assert(c, icmd.Success)
    48  
    49  	cleanedImageID := strings.TrimSpace(result.Combined())
    50  	c.Assert(cleanedImageID, checker.Not(checker.Equals), "", check.Commentf("output should have been an image id"))
    51  }