AdGuardHome/internal/util/autohosts_test.go
Ainar Garipov ffb503976b Pull request: all: fix windows tempdir
Merge in DNS/adguard-home from try-fixing-windows-tests to master

Squashed commit of the following:

commit 25a43db5d53f24b98921efa21d8d2f231992e761
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Fri Mar 26 21:19:00 2021 +0300

    all: fix windows tempdir
2021-03-29 11:40:04 +03:00

173 lines
3.7 KiB
Go

package util
import (
"io/ioutil"
"net"
"os"
"strings"
"testing"
"time"
"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
"github.com/miekg/dns"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestMain(m *testing.M) {
aghtest.DiscardLogOutput(m)
}
func prepareTestFile(t *testing.T) (f *os.File) {
t.Helper()
dir := t.TempDir()
f, err := ioutil.TempFile(dir, "")
require.Nil(t, err)
require.NotNil(t, f)
t.Cleanup(func() {
assert.Nil(t, f.Close())
})
return f
}
func assertWriting(t *testing.T, f *os.File, strs ...string) {
t.Helper()
for _, str := range strs {
n, err := f.WriteString(str)
require.Nil(t, err)
assert.Equal(t, n, len(str))
}
}
func TestAutoHostsResolution(t *testing.T) {
ah := &AutoHosts{}
f := prepareTestFile(t)
assertWriting(t, f,
" 127.0.0.1 host localhost # comment \n",
" ::1 localhost#comment \n",
)
ah.Init(f.Name())
t.Run("existing_host", func(t *testing.T) {
ips := ah.Process("localhost", dns.TypeA)
require.Len(t, ips, 1)
assert.Equal(t, net.IPv4(127, 0, 0, 1), ips[0])
})
t.Run("unknown_host", func(t *testing.T) {
ips := ah.Process("newhost", dns.TypeA)
assert.Nil(t, ips)
// Comment.
ips = ah.Process("comment", dns.TypeA)
assert.Nil(t, ips)
})
t.Run("hosts_file", func(t *testing.T) {
names, ok := ah.List()["127.0.0.1"]
require.True(t, ok)
assert.Equal(t, []string{"host", "localhost"}, names)
})
t.Run("ptr", func(t *testing.T) {
testCases := []struct {
wantIP string
wantLen int
wantHost string
}{
{wantIP: "127.0.0.1", wantLen: 2, wantHost: "host"},
{wantIP: "::1", wantLen: 1, wantHost: "localhost"},
}
for _, tc := range testCases {
a, err := dns.ReverseAddr(tc.wantIP)
require.Nil(t, err)
a = strings.TrimSuffix(a, ".")
hosts := ah.ProcessReverse(a, dns.TypePTR)
require.Len(t, hosts, tc.wantLen)
assert.Equal(t, tc.wantHost, hosts[0])
}
})
}
func TestAutoHostsFSNotify(t *testing.T) {
ah := &AutoHosts{}
f := prepareTestFile(t)
assertWriting(t, f, " 127.0.0.1 host localhost \n")
ah.Init(f.Name())
t.Run("unknown_host", func(t *testing.T) {
ips := ah.Process("newhost", dns.TypeA)
assert.Nil(t, ips)
})
// Start monitoring for changes.
ah.Start()
t.Cleanup(ah.Close)
assertWriting(t, f, "127.0.0.2 newhost\n")
require.Nil(t, f.Sync())
// Wait until fsnotify has triggerred and processed the
// file-modification event.
time.Sleep(50 * time.Millisecond)
t.Run("notified", func(t *testing.T) {
ips := ah.Process("newhost", dns.TypeA)
assert.NotNil(t, ips)
require.Len(t, ips, 1)
assert.True(t, net.IP{127, 0, 0, 2}.Equal(ips[0]))
})
}
func TestDNSReverseAddr(t *testing.T) {
testCases := []struct {
name string
have string
want net.IP
}{{
name: "good_ipv4",
have: "1.0.0.127.in-addr.arpa",
want: net.IP{127, 0, 0, 1},
}, {
name: "good_ipv6",
have: "4.3.2.1.d.c.b.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa",
want: net.ParseIP("::abcd:1234"),
}, {
name: "good_ipv6_case",
have: "4.3.2.1.d.c.B.A.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa",
want: net.ParseIP("::abcd:1234"),
}, {
name: "bad_ipv4_dot",
have: "1.0.0.127.in-addr.arpa.",
}, {
name: "wrong_ipv4",
have: ".0.0.127.in-addr.arpa",
}, {
name: "wrong_ipv6",
have: ".3.2.1.d.c.b.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa",
}, {
name: "bad_ipv6_dot",
have: "4.3.2.1.d.c.b.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0..ip6.arpa",
}, {
name: "bad_ipv6_space",
have: "4.3.2.1.d.c.b. .0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa",
}}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
ip := DNSUnreverseAddr(tc.have)
assert.True(t, tc.want.Equal(ip))
})
}
}