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moby--moby/integration-cli/docker_cli_stats_test.go

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package main
import (
"os/exec"
"strings"
"time"
"github.com/go-check/check"
)
func (s *DockerSuite) TestCliStatsNoStream(c *check.C) {
out, _ := dockerCmd(c, "run", "-d", "busybox", "top")
id := strings.TrimSpace(out)
if err := waitRun(id); err != nil {
c.Fatalf("error waiting for container to start: %v", err)
}
statsCmd := exec.Command(dockerBinary, "stats", "--no-stream", id)
chErr := make(chan error)
go func() {
chErr <- statsCmd.Run()
}()
select {
case err := <-chErr:
if err != nil {
c.Fatalf("Error running stats: %v", err)
}
case <-time.After(3 * time.Second):
statsCmd.Process.Kill()
c.Fatalf("stats did not return immediately when not streaming")
}
}