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
91
92
93
94
95
|
//go:build !windows
package libnetwork
import (
"runtime"
"testing"
"github.com/docker/docker/libnetwork/resolvconf"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
"gotest.tools/v3/skip"
)
func TestDNSOptions(t *testing.T) {
skip.If(t, runtime.GOOS == "windows", "test only works on linux")
c, err := New(OptionBoltdbWithRandomDBFile(t))
assert.NilError(t, err)
sb, err := c.NewSandbox("cnt1", nil)
assert.NilError(t, err)
cleanup := func(s *Sandbox) {
if err := s.Delete(); err != nil {
t.Error(err)
}
}
defer cleanup(sb)
sb.startResolver(false)
err = sb.setupDNS()
assert.NilError(t, err)
err = sb.rebuildDNS()
assert.NilError(t, err)
currRC, err := resolvconf.GetSpecific(sb.config.resolvConfPath)
assert.NilError(t, err)
dnsOptionsList := resolvconf.GetOptions(currRC.Content)
assert.Check(t, is.Len(dnsOptionsList, 1))
assert.Check(t, is.Equal("ndots:0", dnsOptionsList[0]))
sb.config.dnsOptionsList = []string{"ndots:5"}
err = sb.setupDNS()
assert.NilError(t, err)
currRC, err = resolvconf.GetSpecific(sb.config.resolvConfPath)
assert.NilError(t, err)
dnsOptionsList = resolvconf.GetOptions(currRC.Content)
assert.Check(t, is.Len(dnsOptionsList, 1))
assert.Check(t, is.Equal("ndots:5", dnsOptionsList[0]))
err = sb.rebuildDNS()
assert.NilError(t, err)
currRC, err = resolvconf.GetSpecific(sb.config.resolvConfPath)
assert.NilError(t, err)
dnsOptionsList = resolvconf.GetOptions(currRC.Content)
assert.Check(t, is.Len(dnsOptionsList, 1))
assert.Check(t, is.Equal("ndots:5", dnsOptionsList[0]))
sb2, err := c.NewSandbox("cnt2", nil)
assert.NilError(t, err)
defer cleanup(sb2)
sb2.startResolver(false)
sb2.config.dnsOptionsList = []string{"ndots:0"}
err = sb2.setupDNS()
assert.NilError(t, err)
err = sb2.rebuildDNS()
assert.NilError(t, err)
currRC, err = resolvconf.GetSpecific(sb2.config.resolvConfPath)
assert.NilError(t, err)
dnsOptionsList = resolvconf.GetOptions(currRC.Content)
assert.Check(t, is.Len(dnsOptionsList, 1))
assert.Check(t, is.Equal("ndots:0", dnsOptionsList[0]))
sb2.config.dnsOptionsList = []string{"ndots:foobar"}
err = sb2.setupDNS()
assert.NilError(t, err)
err = sb2.rebuildDNS()
assert.NilError(t, err)
currRC, err = resolvconf.GetSpecific(sb2.config.resolvConfPath)
assert.NilError(t, err)
dnsOptionsList = resolvconf.GetOptions(currRC.Content)
assert.Check(t, is.DeepEqual([]string{"ndots:0"}, dnsOptionsList))
sb2.config.dnsOptionsList = []string{"ndots:-1"}
err = sb2.setupDNS()
assert.NilError(t, err)
err = sb2.rebuildDNS()
assert.NilError(t, err)
currRC, err = resolvconf.GetSpecific(sb2.config.resolvConfPath)
assert.NilError(t, err)
dnsOptionsList = resolvconf.GetOptions(currRC.Content)
assert.Check(t, is.DeepEqual([]string{"ndots:0"}, dnsOptionsList))
}
|
