DockerCLI/e2e/container/attach_test.go

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package container
import (
"strings"
"testing"
"github.com/docker/cli/e2e/internal/fixtures"
"github.com/gotestyourself/gotestyourself/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.RunCmd(shell(t,
"docker run -d -i --rm %s sh -c 'read; exit %d'", fixtures.AlpineImage, exitcode))
result.Assert(t, icmd.Success)
return strings.TrimSpace(result.Stdout())
}
func withStdinNewline(cmd *icmd.Cmd) {
cmd.Stdin = strings.NewReader("\n")
}