github.com/tompao/docker@v1.9.1/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/go-check/check"
     9  )
    10  
    11  // export an image and try to import it into a new one
    12  func (s *DockerSuite) TestExportContainerAndImportImage(c *check.C) {
    13  	testRequires(c, DaemonIsLinux)
    14  	containerID := "testexportcontainerandimportimage"
    15  
    16  	dockerCmd(c, "run", "--name", containerID, "busybox", "true")
    17  
    18  	out, _ := dockerCmd(c, "export", containerID)
    19  
    20  	importCmd := exec.Command(dockerBinary, "import", "-", "repo/testexp:v1")
    21  	importCmd.Stdin = strings.NewReader(out)
    22  	out, _, err := runCommandWithOutput(importCmd)
    23  	if err != nil {
    24  		c.Fatalf("failed to import image: %s, %v", out, err)
    25  	}
    26  
    27  	cleanedImageID := strings.TrimSpace(out)
    28  	if cleanedImageID == "" {
    29  		c.Fatalf("output should have been an image id, got: %s", out)
    30  	}
    31  }
    32  
    33  // Used to test output flag in the export command
    34  func (s *DockerSuite) TestExportContainerWithOutputAndImportImage(c *check.C) {
    35  	testRequires(c, DaemonIsLinux)
    36  	containerID := "testexportcontainerwithoutputandimportimage"
    37  
    38  	dockerCmd(c, "run", "--name", containerID, "busybox", "true")
    39  	dockerCmd(c, "export", "--output=testexp.tar", containerID)
    40  	defer os.Remove("testexp.tar")
    41  
    42  	out, _, err := runCommandWithOutput(exec.Command("cat", "testexp.tar"))
    43  	if err != nil {
    44  		c.Fatal(out, err)
    45  	}
    46  
    47  	importCmd := exec.Command(dockerBinary, "import", "-", "repo/testexp:v1")
    48  	importCmd.Stdin = strings.NewReader(out)
    49  	out, _, err = runCommandWithOutput(importCmd)
    50  	if err != nil {
    51  		c.Fatalf("failed to import image: %s, %v", out, err)
    52  	}
    53  
    54  	cleanedImageID := strings.TrimSpace(out)
    55  	if cleanedImageID == "" {
    56  		c.Fatalf("output should have been an image id, got: %s", out)
    57  	}
    58  }