1// Copyright 2014 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// +build darwin dragonfly freebsd openbsd
6
7package unix_test
8
9import (
10	"os/exec"
11	"runtime"
12	"testing"
13	"time"
14
15	"golang.org/x/sys/unix"
16)
17
18func TestGetfsstat(t *testing.T) {
19	n, err := unix.Getfsstat(nil, unix.MNT_NOWAIT)
20	if err != nil {
21		t.Fatal(err)
22	}
23
24	data := make([]unix.Statfs_t, n)
25	n2, err := unix.Getfsstat(data, unix.MNT_NOWAIT)
26	if err != nil {
27		t.Fatal(err)
28	}
29	if n != n2 {
30		t.Errorf("Getfsstat(nil) = %d, but subsequent Getfsstat(slice) = %d", n, n2)
31	}
32	for i, stat := range data {
33		if stat == (unix.Statfs_t{}) {
34			t.Errorf("index %v is an empty Statfs_t struct", i)
35		}
36	}
37	if t.Failed() {
38		for i, stat := range data[:n2] {
39			t.Logf("data[%v] = %+v", i, stat)
40		}
41		mount, err := exec.Command("mount").CombinedOutput()
42		if err != nil {
43			t.Logf("mount: %v\n%s", err, mount)
44		} else {
45			t.Logf("mount: %s", mount)
46		}
47	}
48}
49
50func TestSelect(t *testing.T) {
51	err := unix.Select(0, nil, nil, nil, &unix.Timeval{Sec: 0, Usec: 0})
52	if err != nil {
53		t.Fatalf("Select: %v", err)
54	}
55
56	dur := 250 * time.Millisecond
57	tv := unix.NsecToTimeval(int64(dur))
58	start := time.Now()
59	err = unix.Select(0, nil, nil, nil, &tv)
60	took := time.Since(start)
61	if err != nil {
62		t.Fatalf("Select: %v", err)
63	}
64
65	// On some BSDs the actual timeout might also be slightly less than the requested.
66	// Add an acceptable margin to avoid flaky tests.
67	if took < dur*2/3 {
68		t.Errorf("Select: timeout should have been at least %v, got %v", dur, took)
69	}
70}
71
72func TestSysctlRaw(t *testing.T) {
73	if runtime.GOOS == "openbsd" {
74		t.Skip("kern.proc.pid does not exist on OpenBSD")
75	}
76
77	_, err := unix.SysctlRaw("kern.proc.pid", unix.Getpid())
78	if err != nil {
79		t.Fatal(err)
80	}
81}
82
83func TestSysctlUint32(t *testing.T) {
84	maxproc, err := unix.SysctlUint32("kern.maxproc")
85	if err != nil {
86		t.Fatal(err)
87	}
88	t.Logf("kern.maxproc: %v", maxproc)
89}
90