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moby--moby/integration-cli/docker_cli_exec_unix_test.go

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// +build !windows,!test_no_exec
package main
import (
"bytes"
"io"
"os/exec"
"strings"
"time"
"github.com/docker/docker/pkg/integration/checker"
"github.com/go-check/check"
"github.com/kr/pty"
)
// regression test for #12546
func (s *DockerSuite) TestExecInteractiveStdinClose(c *check.C) {
testRequires(c, DaemonIsLinux)
out, _ := dockerCmd(c, "run", "-itd", "busybox", "/bin/cat")
contID := strings.TrimSpace(out)
cmd := exec.Command(dockerBinary, "exec", "-i", contID, "echo", "-n", "hello")
p, err := pty.Start(cmd)
c.Assert(err, checker.IsNil)
b := bytes.NewBuffer(nil)
go io.Copy(b, p)
ch := make(chan error)
go func() { ch <- cmd.Wait() }()
select {
case err := <-ch:
c.Assert(err, checker.IsNil)
output := b.String()
c.Assert(strings.TrimSpace(output), checker.Equals, "hello")
case <-time.After(5 * time.Second):
c.Fatal("timed out running docker exec")
}
}
func (s *DockerSuite) TestExecTTY(c *check.C) {
testRequires(c, DaemonIsLinux)
dockerCmd(c, "run", "-d", "--name=test", "busybox", "sh", "-c", "echo hello > /foo && top")
cmd := exec.Command(dockerBinary, "exec", "-it", "test", "sh")
p, err := pty.Start(cmd)
c.Assert(err, checker.IsNil)
defer p.Close()
_, err = p.Write([]byte("cat /foo && sleep 2 && exit\n"))
c.Assert(err, checker.IsNil)
chErr := make(chan error)
go func() {
chErr <- cmd.Wait()
}()
select {
case err := <-chErr:
c.Assert(err, checker.IsNil)
case <-time.After(3 * time.Second):
c.Fatal("timeout waiting for exec to exit")
}
buf := make([]byte, 256)
read, err := p.Read(buf)
c.Assert(err, checker.IsNil)
c.Assert(bytes.Contains(buf, []byte("hello")), checker.Equals, true, check.Commentf(string(buf[:read])))
}