package container import ( "fmt" "strings" "testing" "github.com/docker/cli/e2e/internal/fixtures" "gotest.tools/v3/icmd" ) func TestAttachExitCode(t *testing.T) { containerID := runBackgroundContainsWithExitCode(t, 21) result := icmd.RunCmd( icmd.Command("docker", "attach", containerID), withStdinNewline) result.Assert(t, icmd.Expected{ExitCode: 21}) } func runBackgroundContainsWithExitCode(t *testing.T, exitcode int) string { result := icmd.RunCommand("docker", "run", "-d", "-i", "--rm", fixtures.AlpineImage, "sh", "-c", fmt.Sprintf("read; exit %d", exitcode)) result.Assert(t, icmd.Success) return strings.TrimSpace(result.Stdout()) } func withStdinNewline(cmd *icmd.Cmd) { cmd.Stdin = strings.NewReader("\n") }