package main
 
 import (
 	"fmt"
 	"strings"
 	"time"
 
 	"github.com/go-check/check"
 )
 
 func (s *DockerSuite) BenchmarkLogsCLIRotateFollow(c *check.C) {
 	out, _ := dockerCmd(c, "run", "-d", "--log-opt", "max-size=1b", "--log-opt", "max-file=10", "busybox", "sh", "-c", "while true; do usleep 50000; echo hello; done")
 	id := strings.TrimSpace(out)
 	ch := make(chan error, 1)
 	go func() {
 		ch <- nil
 		out, _, _ := dockerCmdWithError("logs", "-f", id)
 		// if this returns at all, it's an error
 		ch <- fmt.Errorf(out)
 	}()
 
 	<-ch
 	select {
 	case <-time.After(30 * time.Second):
 		// ran for 30 seconds with no problem
 		return
 	case err := <-ch:
 		if err != nil {
 			c.Fatal(err)
 		}
 	}
 }