125 lines
2.7 KiB
Go
125 lines
2.7 KiB
Go
package rdns_test
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import (
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"net/netip"
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"testing"
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"time"
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"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
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"github.com/AdguardTeam/AdGuardHome/internal/rdns"
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"github.com/AdguardTeam/golibs/netutil"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestDefault_Process(t *testing.T) {
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ip1 := netip.MustParseAddr("1.2.3.4")
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revAddr1, err := netutil.IPToReversedAddr(ip1.AsSlice())
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require.NoError(t, err)
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ip2 := netip.MustParseAddr("4.3.2.1")
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revAddr2, err := netutil.IPToReversedAddr(ip2.AsSlice())
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require.NoError(t, err)
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localIP := netip.MustParseAddr("192.168.0.1")
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localRevAddr1, err := netutil.IPToReversedAddr(localIP.AsSlice())
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require.NoError(t, err)
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testCases := []struct {
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name string
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addr netip.Addr
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want string
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}{{
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name: "first",
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addr: ip1,
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want: revAddr1,
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}, {
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name: "second",
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addr: ip2,
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want: revAddr2,
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}, {
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name: "empty",
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addr: netip.MustParseAddr("0.0.0.0"),
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want: "",
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}, {
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name: "private",
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addr: localIP,
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want: localRevAddr1,
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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hit := 0
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onExchange := func(ip netip.Addr) (host string, ttl time.Duration, err error) {
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hit++
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switch ip {
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case ip1:
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return revAddr1, time.Hour, nil
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case ip2:
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return revAddr2, time.Hour, nil
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case localIP:
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return localRevAddr1, time.Hour, nil
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default:
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return "", time.Hour, nil
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}
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}
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r := rdns.New(&rdns.Config{
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CacheSize: 100,
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CacheTTL: time.Hour,
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Exchanger: &aghtest.Exchanger{OnExchange: onExchange},
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})
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got, changed := r.Process(tc.addr)
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require.True(t, changed)
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assert.Equal(t, tc.want, got)
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assert.Equal(t, 1, hit)
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// From cache.
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got, changed = r.Process(tc.addr)
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require.False(t, changed)
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assert.Equal(t, tc.want, got)
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assert.Equal(t, 1, hit)
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})
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}
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t.Run("zero_ttl", func(t *testing.T) {
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const cacheTTL = time.Second / 2
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zeroTTLExchanger := &aghtest.Exchanger{
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OnExchange: func(ip netip.Addr) (host string, ttl time.Duration, err error) {
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return revAddr1, 0, nil
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},
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}
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r := rdns.New(&rdns.Config{
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CacheSize: 1,
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CacheTTL: cacheTTL,
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Exchanger: zeroTTLExchanger,
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})
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got, changed := r.Process(ip1)
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require.True(t, changed)
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assert.Equal(t, revAddr1, got)
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zeroTTLExchanger.OnExchange = func(ip netip.Addr) (host string, ttl time.Duration, err error) {
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return revAddr2, time.Hour, nil
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}
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require.EventuallyWithT(t, func(t *assert.CollectT) {
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got, changed = r.Process(ip1)
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assert.True(t, changed)
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assert.Equal(t, revAddr2, got)
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}, 2*cacheTTL, time.Millisecond*100)
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assert.Never(t, func() (changed bool) {
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_, changed = r.Process(ip1)
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return changed
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}, 2*cacheTTL, time.Millisecond*100)
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})
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}
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