118 lines
2 KiB
Go
118 lines
2 KiB
Go
package fifo
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import (
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"bytes"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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"runtime"
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"sync"
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"testing"
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"time"
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"github.com/hashicorp/nomad/helper/uuid"
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"github.com/stretchr/testify/require"
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)
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func TestFIFO(t *testing.T) {
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require := require.New(t)
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var path string
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if runtime.GOOS == "windows" {
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path = "//./pipe/fifo"
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} else {
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dir, err := ioutil.TempDir("", "")
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require.NoError(err)
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defer os.RemoveAll(dir)
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path = filepath.Join(dir, "fifo")
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}
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reader, err := New(path)
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require.NoError(err)
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toWrite := [][]byte{
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[]byte("abc\n"),
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[]byte(""),
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[]byte("def\n"),
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[]byte("nomad"),
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[]byte("\n"),
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}
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var readBuf bytes.Buffer
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var wait sync.WaitGroup
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wait.Add(1)
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go func() {
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defer wait.Done()
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io.Copy(&readBuf, reader)
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}()
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writer, err := Open(path)
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require.NoError(err)
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for _, b := range toWrite {
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n, err := writer.Write(b)
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require.NoError(err)
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require.Equal(n, len(b))
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}
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require.NoError(writer.Close())
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time.Sleep(500 * time.Millisecond)
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require.NoError(reader.Close())
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wait.Wait()
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expected := "abc\ndef\nnomad\n"
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require.Equal(expected, readBuf.String())
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require.NoError(Remove(path))
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}
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func TestWriteClose(t *testing.T) {
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require := require.New(t)
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var path string
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if runtime.GOOS == "windows" {
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path = "//./pipe/" + uuid.Generate()[:4]
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} else {
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dir, err := ioutil.TempDir("", "")
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require.NoError(err)
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defer os.RemoveAll(dir)
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path = filepath.Join(dir, "fifo")
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}
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reader, err := New(path)
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require.NoError(err)
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var readBuf bytes.Buffer
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var wait sync.WaitGroup
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wait.Add(1)
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go func() {
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defer wait.Done()
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io.Copy(&readBuf, reader)
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}()
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writer, err := Open(path)
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require.NoError(err)
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var count int
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wait.Add(1)
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go func() {
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defer wait.Done()
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for count = 0; count < int(^uint16(0)); count++ {
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_, err := writer.Write([]byte(","))
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if err != nil && IsClosedErr(err) {
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break
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}
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require.NoError(err)
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time.Sleep(5 * time.Millisecond)
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}
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}()
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time.Sleep(500 * time.Millisecond)
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require.NoError(writer.Close())
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wait.Wait()
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require.Equal(count, len(readBuf.String()))
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}
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