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package console
import (
"bytes"
"fmt"
"io"
"os"
"os/exec"
"sync"
"testing"
)
func TestEpollConsole(t *testing.T) {
console, slavePath, err := NewPty()
if err != nil {
t.Fatal(err)
}
defer console.Close()
slave, err := os.OpenFile(slavePath, os.O_RDWR, 0)
if err != nil {
t.Fatal(err)
}
defer slave.Close()
iteration := 10
cmd := exec.Command("sh", "-c", fmt.Sprintf("for x in `seq 1 %d`; do echo -n test; done", iteration))
cmd.Stdin = slave
cmd.Stdout = slave
cmd.Stderr = slave
epoller, err := NewEpoller()
if err != nil {
t.Fatal(err)
}
epollConsole, err := epoller.Add(console)
if err != nil {
t.Fatal(err)
}
go epoller.Wait()
var (
b bytes.Buffer
wg sync.WaitGroup
)
wg.Add(1)
go func() {
io.Copy(&b, epollConsole)
wg.Done()
}()
if err := cmd.Run(); err != nil {
t.Fatal(err)
}
slave.Close()
if err := epollConsole.Shutdown(epoller.CloseConsole); err != nil {
t.Fatal(err)
}
wg.Wait()
if err := epollConsole.Close(); err != nil {
t.Fatal(err)
}
expectedOutput := ""
for i := 0; i < iteration; i++ {
expectedOutput += "test"
}
if out := b.String(); out != expectedOutput {
t.Errorf("unexpected output %q", out)
}
}
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