63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package dns
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"net"
|
|
"os"
|
|
"testing"
|
|
)
|
|
|
|
func TestGetDNSServers(t *testing.T) {
|
|
s, err := GetSystemNameServers()
|
|
if err != nil {
|
|
t.Fatalf("unexpected error reading /etc/resolv.conf file: %v", err)
|
|
}
|
|
if len(s) < 1 {
|
|
t.Error("expected at least 1 nameserver in /etc/resolv.conf")
|
|
}
|
|
|
|
file, err := ioutil.TempFile("", "fw")
|
|
if err != nil {
|
|
t.Fatalf("unexpected error: %v", err)
|
|
}
|
|
defer file.Close()
|
|
defer os.Remove(file.Name())
|
|
|
|
ioutil.WriteFile(file.Name(), []byte(`
|
|
# comment
|
|
; comment
|
|
nameserver 2001:4860:4860::8844
|
|
nameserver 2001:4860:4860::8888
|
|
nameserver 8.8.8.8
|
|
`), 0644)
|
|
|
|
defResolvConf = file.Name()
|
|
s, err = GetSystemNameServers()
|
|
if err != nil {
|
|
t.Fatalf("unexpected error reading /etc/resolv.conf file: %v", err)
|
|
}
|
|
if len(s) < 3 {
|
|
t.Errorf("expected at 3 nameservers but %v returned", len(s))
|
|
}
|
|
|
|
eip := net.ParseIP("2001:4860:4860::8844")
|
|
if !s[0].Equal(eip) {
|
|
t.Errorf("expected %v as nameservers but %v returned", eip, s[0])
|
|
}
|
|
}
|