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-rw-r--r--src/internal/poll/read_test.go61
1 files changed, 61 insertions, 0 deletions
diff --git a/src/internal/poll/read_test.go b/src/internal/poll/read_test.go
new file mode 100644
index 0000000..598a52e
--- /dev/null
+++ b/src/internal/poll/read_test.go
@@ -0,0 +1,61 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package poll_test
+
+import (
+ "os"
+ "runtime"
+ "sync"
+ "testing"
+ "time"
+)
+
+func TestRead(t *testing.T) {
+ t.Run("SpecialFile", func(t *testing.T) {
+ var wg sync.WaitGroup
+ for _, p := range specialFiles() {
+ for i := 0; i < 4; i++ {
+ wg.Add(1)
+ go func(p string) {
+ defer wg.Done()
+ for i := 0; i < 100; i++ {
+ if _, err := os.ReadFile(p); err != nil {
+ t.Error(err)
+ return
+ }
+ time.Sleep(time.Nanosecond)
+ }
+ }(p)
+ }
+ }
+ wg.Wait()
+ })
+}
+
+func specialFiles() []string {
+ var ps []string
+ switch runtime.GOOS {
+ case "darwin", "ios", "dragonfly", "freebsd", "netbsd", "openbsd":
+ ps = []string{
+ "/dev/null",
+ }
+ case "linux":
+ ps = []string{
+ "/dev/null",
+ "/proc/stat",
+ "/sys/devices/system/cpu/online",
+ }
+ }
+ nps := ps[:0]
+ for _, p := range ps {
+ f, err := os.Open(p)
+ if err != nil {
+ continue
+ }
+ f.Close()
+ nps = append(nps, p)
+ }
+ return nps
+}