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- // Copyright 2014 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.
- // +build darwin dragonfly freebsd openbsd
- package unix_test
- import (
- "os"
- "os/exec"
- "runtime"
- "testing"
- "time"
- "golang.org/x/sys/unix"
- )
- func TestGetfsstat(t *testing.T) {
- n, err := unix.Getfsstat(nil, unix.MNT_NOWAIT)
- if err != nil {
- t.Fatal(err)
- }
- data := make([]unix.Statfs_t, n)
- n2, err := unix.Getfsstat(data, unix.MNT_NOWAIT)
- if err != nil {
- t.Fatal(err)
- }
- if n != n2 {
- t.Errorf("Getfsstat(nil) = %d, but subsequent Getfsstat(slice) = %d", n, n2)
- }
- for i, stat := range data {
- if stat == (unix.Statfs_t{}) {
- t.Errorf("index %v is an empty Statfs_t struct", i)
- }
- }
- if t.Failed() {
- for i, stat := range data[:n2] {
- t.Logf("data[%v] = %+v", i, stat)
- }
- mount, err := exec.Command("mount").CombinedOutput()
- if err != nil {
- t.Logf("mount: %v\n%s", err, mount)
- } else {
- t.Logf("mount: %s", mount)
- }
- }
- }
- func TestSelect(t *testing.T) {
- n, err := unix.Select(0, nil, nil, nil, &unix.Timeval{Sec: 0, Usec: 0})
- if err != nil {
- t.Fatalf("Select: %v", err)
- }
- if n != 0 {
- t.Fatalf("Select: expected 0 ready file descriptors, got %v", n)
- }
- dur := 250 * time.Millisecond
- tv := unix.NsecToTimeval(int64(dur))
- start := time.Now()
- n, err = unix.Select(0, nil, nil, nil, &tv)
- took := time.Since(start)
- if err != nil {
- t.Fatalf("Select: %v", err)
- }
- if n != 0 {
- t.Fatalf("Select: expected 0 ready file descriptors, got %v", n)
- }
- // On some BSDs the actual timeout might also be slightly less than the requested.
- // Add an acceptable margin to avoid flaky tests.
- if took < dur*2/3 {
- t.Errorf("Select: timeout should have been at least %v, got %v", dur, took)
- }
- rr, ww, err := os.Pipe()
- if err != nil {
- t.Fatal(err)
- }
- defer rr.Close()
- defer ww.Close()
- if _, err := ww.Write([]byte("HELLO GOPHER")); err != nil {
- t.Fatal(err)
- }
- rFdSet := &unix.FdSet{}
- fd := rr.Fd()
- // FD_SET(fd, rFdSet)
- rFdSet.Bits[fd/unix.NFDBITS] |= (1 << (fd % unix.NFDBITS))
- n, err = unix.Select(int(fd+1), rFdSet, nil, nil, nil)
- if err != nil {
- t.Fatalf("Select: %v", err)
- }
- if n != 1 {
- t.Fatalf("Select: expected 1 ready file descriptors, got %v", n)
- }
- }
- func TestSysctlRaw(t *testing.T) {
- if runtime.GOOS == "openbsd" {
- t.Skip("kern.proc.pid does not exist on OpenBSD")
- }
- _, err := unix.SysctlRaw("kern.proc.pid", unix.Getpid())
- if err != nil {
- t.Fatal(err)
- }
- }
- func TestSysctlUint32(t *testing.T) {
- maxproc, err := unix.SysctlUint32("kern.maxproc")
- if err != nil {
- t.Fatal(err)
- }
- t.Logf("kern.maxproc: %v", maxproc)
- }
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