blob: 28a1cb8351c24bc3d34f4c9fe84e0183e701fd1b (
plain)
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
|
// Copyright 2015 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.
//go:build !js && !plan9 && !wasip1
package net
import "testing"
// forceGoDNS forces the resolver configuration to use the pure Go resolver
// and returns a fixup function to restore the old settings.
func forceGoDNS() func() {
c := systemConf()
oldGo := c.netGo
oldCgo := c.netCgo
fixup := func() {
c.netGo = oldGo
c.netCgo = oldCgo
}
c.netGo = true
c.netCgo = false
return fixup
}
// forceCgoDNS forces the resolver configuration to use the cgo resolver
// and returns a fixup function to restore the old settings.
// (On non-Unix systems forceCgoDNS returns nil.)
func forceCgoDNS() func() {
c := systemConf()
oldGo := c.netGo
oldCgo := c.netCgo
fixup := func() {
c.netGo = oldGo
c.netCgo = oldCgo
}
c.netGo = false
c.netCgo = true
return fixup
}
func TestForceCgoDNS(t *testing.T) {
if !cgoAvailable {
t.Skip("cgo resolver not available")
}
defer forceCgoDNS()()
order, _ := systemConf().hostLookupOrder(nil, "go.dev")
if order != hostLookupCgo {
t.Fatalf("hostLookupOrder returned: %v, want cgo", order)
}
}
func TestForceGoDNS(t *testing.T) {
defer forceGoDNS()()
order, _ := systemConf().hostLookupOrder(nil, "go.dev")
if order == hostLookupCgo {
t.Fatalf("hostLookupOrder returned: %v, want go resolver order", order)
}
}
|
