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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /src/internal/poll/read_test.go | |
parent | Initial commit. (diff) | |
download | golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/internal/poll/read_test.go')
-rw-r--r-- | src/internal/poll/read_test.go | 61 |
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 +} |