mirror of https://github.com/status-im/op-geth.git
146 lines
4.6 KiB
Go
146 lines
4.6 KiB
Go
// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package enode
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import (
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"bytes"
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"encoding/hex"
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"fmt"
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"math/big"
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"testing"
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"testing/quick"
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"github.com/ethereum/go-ethereum/p2p/enr"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/stretchr/testify/assert"
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)
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var pyRecord, _ = hex.DecodeString("f884b8407098ad865b00a582051940cb9cf36836572411a47278783077011599ed5cd16b76f2635f4e234738f30813a89eb9137e3e3df5266e3a1f11df72ecf1145ccb9c01826964827634826970847f00000189736563703235366b31a103ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31388375647082765f")
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// TestPythonInterop checks that we can decode and verify a record produced by the Python
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// implementation.
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func TestPythonInterop(t *testing.T) {
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var r enr.Record
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if err := rlp.DecodeBytes(pyRecord, &r); err != nil {
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t.Fatalf("can't decode: %v", err)
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}
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n, err := New(ValidSchemes, &r)
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if err != nil {
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t.Fatalf("can't verify record: %v", err)
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}
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var (
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wantID = HexID("a448f24c6d18e575453db13171562b71999873db5b286df957af199ec94617f7")
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wantSeq = uint64(1)
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wantIP = enr.IPv4{127, 0, 0, 1}
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wantUDP = enr.UDP(30303)
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)
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if n.Seq() != wantSeq {
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t.Errorf("wrong seq: got %d, want %d", n.Seq(), wantSeq)
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}
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if n.ID() != wantID {
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t.Errorf("wrong id: got %x, want %x", n.ID(), wantID)
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}
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want := map[enr.Entry]interface{}{new(enr.IPv4): &wantIP, new(enr.UDP): &wantUDP}
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for k, v := range want {
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desc := fmt.Sprintf("loading key %q", k.ENRKey())
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if assert.NoError(t, n.Load(k), desc) {
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assert.Equal(t, k, v, desc)
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}
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}
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}
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func TestHexID(t *testing.T) {
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ref := ID{0, 0, 0, 0, 0, 0, 0, 128, 106, 217, 182, 31, 165, 174, 1, 67, 7, 235, 220, 150, 66, 83, 173, 205, 159, 44, 10, 57, 42, 161, 26, 188}
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id1 := HexID("0x00000000000000806ad9b61fa5ae014307ebdc964253adcd9f2c0a392aa11abc")
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id2 := HexID("00000000000000806ad9b61fa5ae014307ebdc964253adcd9f2c0a392aa11abc")
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if id1 != ref {
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t.Errorf("wrong id1\ngot %v\nwant %v", id1[:], ref[:])
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}
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if id2 != ref {
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t.Errorf("wrong id2\ngot %v\nwant %v", id2[:], ref[:])
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}
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}
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func TestID_textEncoding(t *testing.T) {
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ref := ID{
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10,
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0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x20,
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0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x30,
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0x31, 0x32,
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}
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hex := "0102030405060708091011121314151617181920212223242526272829303132"
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text, err := ref.MarshalText()
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if err != nil {
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t.Fatal(err)
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}
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if !bytes.Equal(text, []byte(hex)) {
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t.Fatalf("text encoding did not match\nexpected: %s\ngot: %s", hex, text)
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}
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id := new(ID)
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if err := id.UnmarshalText(text); err != nil {
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t.Fatal(err)
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}
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if *id != ref {
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t.Fatalf("text decoding did not match\nexpected: %s\ngot: %s", ref, id)
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}
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}
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func TestID_distcmp(t *testing.T) {
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distcmpBig := func(target, a, b ID) int {
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tbig := new(big.Int).SetBytes(target[:])
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abig := new(big.Int).SetBytes(a[:])
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bbig := new(big.Int).SetBytes(b[:])
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return new(big.Int).Xor(tbig, abig).Cmp(new(big.Int).Xor(tbig, bbig))
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}
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if err := quick.CheckEqual(DistCmp, distcmpBig, nil); err != nil {
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t.Error(err)
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}
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}
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// The random tests is likely to miss the case where a and b are equal,
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// this test checks it explicitly.
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func TestID_distcmpEqual(t *testing.T) {
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base := ID{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
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x := ID{15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0}
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if DistCmp(base, x, x) != 0 {
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t.Errorf("DistCmp(base, x, x) != 0")
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}
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}
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func TestID_logdist(t *testing.T) {
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logdistBig := func(a, b ID) int {
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abig, bbig := new(big.Int).SetBytes(a[:]), new(big.Int).SetBytes(b[:])
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return new(big.Int).Xor(abig, bbig).BitLen()
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}
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if err := quick.CheckEqual(LogDist, logdistBig, nil); err != nil {
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t.Error(err)
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}
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}
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// The random tests is likely to miss the case where a and b are equal,
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// this test checks it explicitly.
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func TestID_logdistEqual(t *testing.T) {
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x := ID{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
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if LogDist(x, x) != 0 {
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t.Errorf("LogDist(x, x) != 0")
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}
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}
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