ceremonyclient/go-libp2p-kad-dht/rtrefresh/rt_refresh_manager_test.go

103 lines
2.9 KiB
Go

package rtrefresh
import (
"context"
"strconv"
"testing"
"time"
"github.com/libp2p/go-libp2p/core/test"
kb "github.com/libp2p/go-libp2p-kbucket"
pstore "github.com/libp2p/go-libp2p/p2p/host/peerstore"
"github.com/stretchr/testify/require"
)
func TestSkipRefreshOnGapCpls(t *testing.T) {
t.Skip("This test is flaky, see https://github.com/libp2p/go-libp2p-kad-dht/issues/722.")
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
local := test.RandPeerIDFatal(t)
// adds a peer for a cpl.
// The "ignoreCpl" is the cpl for which we assume we have no peers in the network.
// So. if the query function gets a "key" which is basically tha stringed version of the "ignoreCpl",
// we return without adding any peers for it to the Routing Table.
qFuncWithIgnore := func(rt *kb.RoutingTable, ignoreCpl uint) func(c context.Context, key string) error {
return func(c context.Context, key string) error {
if key == string(local) {
return nil
}
u, err := strconv.ParseInt(key, 10, 64)
require.NoError(t, err)
if uint(u) == ignoreCpl {
return nil
}
p, err := rt.GenRandPeerID(uint(u))
require.NoError(t, err)
b, err := rt.TryAddPeer(p, true, false)
require.NoError(t, err)
require.True(t, b)
return nil
}
}
// We use the cpl as the key for the query. So, the cpl -> key transformation function
// basically just converts the uint cpl to a string key using the strconv lib.
kfnc := func(cpl uint) (string, error) {
return strconv.FormatInt(int64(cpl), 10), nil
}
// when 2*gapcpl < maxCpl
// gap is 2 and max is 10
rt, err := kb.NewRoutingTable(2, kb.ConvertPeerID(local), time.Hour, pstore.NewMetrics(), 100*time.Hour, nil)
require.NoError(t, err)
r := &RtRefreshManager{ctx: ctx, rt: rt, refreshKeyGenFnc: kfnc, dhtPeerId: local}
icpl := uint(2)
lastCpl := 2 * (icpl + 1)
p, err := rt.GenRandPeerID(10)
require.NoError(t, err)
b, _ := rt.TryAddPeer(p, true, false)
require.True(t, b)
r.refreshQueryFnc = qFuncWithIgnore(rt, icpl)
require.NoError(t, r.doRefresh(ctx, true))
for i := uint(0); i < lastCpl+1; i++ {
if i == icpl {
require.Equal(t, 0, rt.NPeersForCpl(i))
continue
}
require.Equal(t, 1, rt.NPeersForCpl(uint(i)))
}
for i := lastCpl + 1; i < 10; i++ {
require.Equal(t, 0, rt.NPeersForCpl(i))
}
// when 2 * (gapcpl + 1) > maxCpl
rt, err = kb.NewRoutingTable(2, kb.ConvertPeerID(local), time.Hour, pstore.NewMetrics(), 100*time.Hour, nil)
require.NoError(t, err)
r = &RtRefreshManager{ctx: ctx, rt: rt, refreshKeyGenFnc: kfnc, dhtPeerId: local}
icpl = uint(6)
p, err = rt.GenRandPeerID(10)
require.NoError(t, err)
b, _ = rt.TryAddPeer(p, true, false)
require.True(t, b)
r.refreshQueryFnc = qFuncWithIgnore(rt, icpl)
require.NoError(t, r.doRefresh(ctx, true))
for i := uint(0); i < 10; i++ {
if i == icpl {
require.Equal(t, 0, rt.NPeersForCpl(i))
continue
}
require.Equal(t, 1, rt.NPeersForCpl(uint(i)))
}
require.Equal(t, 2, rt.NPeersForCpl(10))
}