88 lines
1.8 KiB
Go
88 lines
1.8 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package console
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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"os/exec"
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"sync"
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"testing"
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)
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func TestEpollConsole(t *testing.T) {
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console, slavePath, err := NewPty()
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if err != nil {
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t.Fatal(err)
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}
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defer console.Close()
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slave, err := os.OpenFile(slavePath, os.O_RDWR, 0)
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if err != nil {
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t.Fatal(err)
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}
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defer slave.Close()
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iteration := 10
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cmd := exec.Command("sh", "-c", fmt.Sprintf("for x in `seq 1 %d`; do echo -n test; done", iteration))
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cmd.Stdin = slave
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cmd.Stdout = slave
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cmd.Stderr = slave
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epoller, err := NewEpoller()
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if err != nil {
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t.Fatal(err)
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}
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epollConsole, err := epoller.Add(console)
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if err != nil {
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t.Fatal(err)
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}
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go epoller.Wait()
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var (
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b bytes.Buffer
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wg sync.WaitGroup
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)
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wg.Add(1)
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go func() {
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io.Copy(&b, epollConsole)
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wg.Done()
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}()
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if err := cmd.Run(); err != nil {
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t.Fatal(err)
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}
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slave.Close()
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if err := epollConsole.Shutdown(epoller.CloseConsole); err != nil {
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t.Fatal(err)
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}
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wg.Wait()
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if err := epollConsole.Close(); err != nil {
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t.Fatal(err)
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}
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expectedOutput := ""
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for i := 0; i < iteration; i++ {
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expectedOutput += "test"
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}
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if out := b.String(); out != expectedOutput {
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t.Errorf("unexpected output %q", out)
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}
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}
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