254 lines
10 KiB
Go
254 lines
10 KiB
Go
package dht
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import (
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"encoding/json"
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"fmt"
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"math/big"
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"net"
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"strconv"
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"strings"
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"testing"
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"github.com/lbryio/reflector.go/dht/bits"
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"github.com/sebdah/goldie"
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)
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func checkBucketCount(t *testing.T, rt *routingTable, correctSize, correctCount, testCaseIndex int) {
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if len(rt.buckets) != correctSize {
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t.Errorf("failed test case %d. there should be %d buckets, got %d", testCaseIndex+1, correctSize, len(rt.buckets))
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}
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if rt.Count() != correctCount {
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t.Errorf("failed test case %d. there should be %d contacts, got %d", testCaseIndex+1, correctCount, rt.Count())
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}
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}
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func checkRangeContinuity(t *testing.T, rt *routingTable) {
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position := big.NewInt(0)
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for i, bucket := range rt.buckets {
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bucketStart := bucket.Range.Start.Big()
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if bucketStart.Cmp(position) != 0 {
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t.Errorf("invalid start of bucket range: %s vs %s", position.String(), bucketStart.String())
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}
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if bucketStart.Cmp(bucket.Range.End.Big()) != -1 {
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t.Error("range start is not less than bucket end")
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}
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position = bucket.Range.End.Big()
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if i != len(rt.buckets)-1 {
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position.Add(position, big.NewInt(1))
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}
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}
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if position.Cmp(bits.MaxP().Big()) != 0 {
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t.Errorf("range does not cover the whole keyspace, %s vs %s", bits.FromBigP(position).String(), bits.MaxP().String())
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}
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}
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func TestSplitBuckets(t *testing.T) {
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rt := newRoutingTable(bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"))
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if len(rt.buckets) != 1 {
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t.Errorf("there should only be one bucket so far")
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}
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if len(rt.buckets[0].peers) != 0 {
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t.Errorf("there should be no contacts yet")
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}
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var tests = []struct {
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id bits.Bitmap
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expectedBucketCount int
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expectedTotalContacts int
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}{
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//fill first bucket
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{bits.FromHexP("F00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 1},
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{bits.FromHexP("FF0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 2},
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{bits.FromHexP("FFF000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 3},
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{bits.FromHexP("FFFF00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 4},
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{bits.FromHexP("FFFFF0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 5},
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{bits.FromHexP("FFFFFF000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 6},
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{bits.FromHexP("FFFFFFF00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 7},
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{bits.FromHexP("FFFFFFFF0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1, 8},
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// fill second bucket
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{bits.FromHexP("FFFFFFFFF000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 9},
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{bits.FromHexP("FFFFFFFFFF00000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 10},
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{bits.FromHexP("FFFFFFFFFFF0000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 11},
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{bits.FromHexP("FFFFFFFFFFFF000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 12},
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{bits.FromHexP("FFFFFFFFFFFFF00000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 13},
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{bits.FromHexP("FFFFFFFFFFFFFF0000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 14},
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{bits.FromHexP("FFFFFFFFFFFFFFF000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 15},
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{bits.FromHexP("FFFFFFFFFFFFFFFF00000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 16},
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// this should be skipped (no split should occur)
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{bits.FromHexP("FFFFFFFFFFFFFFFFF0000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2, 16},
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{bits.FromHexP("100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 3, 17},
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{bits.FromHexP("200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 3, 18},
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{bits.FromHexP("300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 3, 19},
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{bits.FromHexP("400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 20},
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{bits.FromHexP("500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 21},
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{bits.FromHexP("600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 22},
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{bits.FromHexP("700000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 23},
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{bits.FromHexP("800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 24},
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{bits.FromHexP("900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 25},
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{bits.FromHexP("A00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 26},
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{bits.FromHexP("B00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 4, 27},
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}
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for i, testCase := range tests {
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fmt.Printf("\n\n\ncase %d\n", i)
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rt.Update(Contact{testCase.id, net.ParseIP("127.0.0.1"), 8000 + i})
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//spew.Dump(rt.buckets)
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checkBucketCount(t, rt, testCase.expectedBucketCount, testCase.expectedTotalContacts, i)
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checkRangeContinuity(t, rt)
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}
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var testRanges = []struct {
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id bits.Bitmap
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expected int
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}{
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{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001"), 0},
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{bits.FromHexP("000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005"), 0},
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{bits.FromHexP("200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010"), 1},
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{bits.FromHexP("380000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 2},
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{bits.FromHexP("F00000000000000000000000000000000000000000000000000F00000000000000000000000000000000000000000000"), 3},
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{bits.FromHexP("F0000000000000000000000000000000F0000000000000000000000000F0000000000000000000000000000000000000"), 3},
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}
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for _, tt := range testRanges {
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bucket := rt.bucketNumFor(tt.id)
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if bucket != tt.expected {
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t.Errorf("bucketFor(%s, %s) => %d, want %d", tt.id.Hex(), rt.id.Hex(), bucket, tt.expected)
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}
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}
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rt.printBucketInfo()
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}
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func TestRoutingTable_GetClosest(t *testing.T) {
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n1 := bits.FromHexP("FFFFFFFF0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
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n2 := bits.FromHexP("FFFFFFF00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
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n3 := bits.FromHexP("111111110000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
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rt := newRoutingTable(n1)
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rt.Update(Contact{n2, net.ParseIP("127.0.0.1"), 8001})
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rt.Update(Contact{n3, net.ParseIP("127.0.0.1"), 8002})
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contacts := rt.GetClosest(bits.FromHexP("222222220000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"), 1)
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if len(contacts) != 1 {
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t.Fail()
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return
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}
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if !contacts[0].ID.Equals(n3) {
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t.Error(contacts[0])
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}
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contacts = rt.GetClosest(n2, 10)
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if len(contacts) != 2 {
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t.Error(len(contacts))
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return
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}
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if !contacts[0].ID.Equals(n2) {
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t.Error(contacts[0])
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}
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if !contacts[1].ID.Equals(n3) {
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t.Error(contacts[1])
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}
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}
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func TestRoutingTable_Refresh(t *testing.T) {
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t.Skip("TODO: test routing table refreshing")
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}
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func TestRoutingTable_MoveToBack(t *testing.T) {
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tt := map[string]struct {
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data []peer
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index int
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expected []peer
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}{
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"simpleMove": {
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data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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index: 1,
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expected: []peer{{NumFailures: 0}, {NumFailures: 2}, {NumFailures: 3}, {NumFailures: 1}},
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},
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"moveFirst": {
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data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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index: 0,
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expected: []peer{{NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}, {NumFailures: 0}},
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},
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"moveLast": {
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data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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index: 3,
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expected: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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},
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"largeIndex": {
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data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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index: 27,
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expected: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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},
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"negativeIndex": {
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data: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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index: -12,
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expected: []peer{{NumFailures: 0}, {NumFailures: 1}, {NumFailures: 2}, {NumFailures: 3}},
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},
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}
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for name, test := range tt {
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moveToBack(test.data, test.index)
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expected := make([]string, len(test.expected))
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actual := make([]string, len(test.data))
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for i := range actual {
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actual[i] = strconv.Itoa(test.data[i].NumFailures)
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expected[i] = strconv.Itoa(test.expected[i].NumFailures)
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}
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expJoin := strings.Join(expected, ",")
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actJoin := strings.Join(actual, ",")
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if actJoin != expJoin {
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t.Errorf("%s failed: got %s; expected %s", name, actJoin, expJoin)
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}
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}
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}
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func TestRoutingTable_Save(t *testing.T) {
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id := bits.FromHexP("1c8aff71b99462464d9eeac639595ab99664be3482cb91a29d87467515c7d9158fe72aa1f1582dab07d8f8b5db277f41")
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rt := newRoutingTable(id)
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ranges := rt.BucketRanges()
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for i, r := range ranges {
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for j := 0; j < bucketSize; j++ {
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toAdd := r.Start.Add(bits.FromShortHexP(strconv.Itoa(j)))
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if toAdd.Cmp(r.End) <= 0 {
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rt.Update(Contact{
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ID: r.Start.Add(bits.FromShortHexP(strconv.Itoa(j))),
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IP: net.ParseIP("1.2.3." + strconv.Itoa(j)),
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Port: 1 + i*bucketSize + j,
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})
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}
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}
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}
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data, err := json.MarshalIndent(rt, "", " ")
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if err != nil {
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t.Error(err)
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}
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goldie.Assert(t, t.Name(), data)
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}
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func TestRoutingTable_Load_ID(t *testing.T) {
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id := "1c8aff71b99462464d9eeac639595ab99664be3482cb91a29d87467515c7d9158fe72aa1f1582dab07d8f8b5db277f41"
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data := []byte(`{"id": "` + id + `","contacts": []}`)
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rt := routingTable{}
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err := json.Unmarshal(data, &rt)
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if err != nil {
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t.Error(err)
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}
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if rt.id.Hex() != id {
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t.Error("id mismatch")
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}
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}
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func TestRoutingTable_Load_Contacts(t *testing.T) {
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t.Skip("TODO")
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}
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