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moby--moby/integration-cli/docker_cli_export_import_test.go

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package main
import (
"os"
"os/exec"
"strings"
"github.com/go-check/check"
)
// export an image and try to import it into a new one
func (s *DockerSuite) TestExportContainerAndImportImage(c *check.C) {
testRequires(c, DaemonIsLinux)
containerID := "testexportcontainerandimportimage"
dockerCmd(c, "run", "--name", containerID, "busybox", "true")
out, _ := dockerCmd(c, "export", containerID)
importCmd := exec.Command(dockerBinary, "import", "-", "repo/testexp:v1")
importCmd.Stdin = strings.NewReader(out)
out, _, err := runCommandWithOutput(importCmd)
if err != nil {
c.Fatalf("failed to import image: %s, %v", out, err)
}
cleanedImageID := strings.TrimSpace(out)
if cleanedImageID == "" {
c.Fatalf("output should have been an image id, got: %s", out)
}
}
// Used to test output flag in the export command
func (s *DockerSuite) TestExportContainerWithOutputAndImportImage(c *check.C) {
testRequires(c, DaemonIsLinux)
containerID := "testexportcontainerwithoutputandimportimage"
dockerCmd(c, "run", "--name", containerID, "busybox", "true")
dockerCmd(c, "export", "--output=testexp.tar", containerID)
defer os.Remove("testexp.tar")
out, _, err := runCommandWithOutput(exec.Command("cat", "testexp.tar"))
if err != nil {
c.Fatal(out, err)
}
importCmd := exec.Command(dockerBinary, "import", "-", "repo/testexp:v1")
importCmd.Stdin = strings.NewReader(out)
out, _, err = runCommandWithOutput(importCmd)
if err != nil {
c.Fatalf("failed to import image: %s, %v", out, err)
}
cleanedImageID := strings.TrimSpace(out)
if cleanedImageID == "" {
c.Fatalf("output should have been an image id, got: %s", out)
}
}