61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package poll_test
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import (
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"os"
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"runtime"
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"sync"
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"testing"
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"time"
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)
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func TestRead(t *testing.T) {
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t.Run("SpecialFile", func(t *testing.T) {
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var wg sync.WaitGroup
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for _, p := range specialFiles() {
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for i := 0; i < 4; i++ {
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wg.Add(1)
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go func(p string) {
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defer wg.Done()
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for i := 0; i < 100; i++ {
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if _, err := os.ReadFile(p); err != nil {
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t.Error(err)
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return
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}
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time.Sleep(time.Nanosecond)
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}
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}(p)
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}
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}
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wg.Wait()
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})
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}
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func specialFiles() []string {
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var ps []string
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switch runtime.GOOS {
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case "darwin", "ios", "dragonfly", "freebsd", "netbsd", "openbsd":
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ps = []string{
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"/dev/null",
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}
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case "linux":
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ps = []string{
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"/dev/null",
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"/proc/stat",
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"/sys/devices/system/cpu/online",
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}
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}
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nps := ps[:0]
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for _, p := range ps {
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f, err := os.Open(p)
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if err != nil {
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continue
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}
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f.Close()
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nps = append(nps, p)
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}
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return nps
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}
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