1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
// Copyright 2018 Tobias Klauser. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
package sysconf_test
import (
"bytes"
"os/exec"
"strconv"
"strings"
"testing"
"github.com/tklauser/go-sysconf"
)
func TestSysconf(t *testing.T) {
// Just test the basic functionality here. The comparison tests against
// C.sysconf are in the test directory.
val, err := sysconf.Sysconf(sysconf.SC_CLK_TCK)
if err != nil {
t.Fatalf("Sysconf(SC_CLK_TCK): %v", err)
}
t.Logf("clock ticks = %v", val)
_, err = sysconf.Sysconf(-1)
if err == nil {
t.Errorf("Sysconf(-1) returned %v, want non-nil", err)
}
}
func TestOpenMax(t *testing.T) {
openMax, err := sysconf.Sysconf(sysconf.SC_OPEN_MAX)
if err != nil {
t.Fatalf("Sysconf(SC_OPEN_MAX): %v", err)
}
// from https://pubs.opengroup.org/onlinepubs/009695399/basedefs/limits.h.html
_POSIX_OPEN_MAX := int64(20)
// according to sysconf(3), OPEN_MAX must be ≥ _POSIX_OPEN_MAX
if openMax < _POSIX_OPEN_MAX {
t.Errorf("Sysconf(SC_OPEN_MAX) (%d) expected to be greater or equal _POSIX_OPEN_MAX (%d)",
openMax, _POSIX_OPEN_MAX)
}
}
func TestGetconf(t *testing.T) {
testCases := []struct {
goVar int
name string
}{
{sysconf.SC_CLK_TCK, "CLK_TCK"},
{sysconf.SC_HOST_NAME_MAX, "HOST_NAME_MAX"},
//{sysconf.SC_OPEN_MAX, "OPEN_MAX"},
{sysconf.SC_PAGE_SIZE, "PAGE_SIZE"},
}
getconf, err := exec.LookPath("getconf")
if err != nil {
t.Skipf("getconf not found in PATH: %v", err)
}
for _, tc := range testCases {
cmd := exec.Command(getconf, tc.name)
var out bytes.Buffer
cmd.Stdout = &out
if err := cmd.Run(); err != nil {
// Ignore getconf errors and skip the test
t.Skipf("failed to invoke getconf: %v", err)
break
}
want, err := strconv.ParseInt(strings.TrimSpace(out.String()), 10, 64)
if err != nil {
t.Errorf("strconv.ParseInt: %v", err)
}
got, err := sysconf.Sysconf(tc.goVar)
if err != nil {
t.Errorf("Sysconf(%s/%d): %v", tc.name, tc.goVar, err)
}
if got != want {
t.Errorf("Sysconf(%v/%d) returned %v, want %v", tc.name, tc.goVar, got, want)
}
}
}
|
