mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
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e67be2b1be
* Remove graphql, legacy options * Remove CODEOWNERS * Remove EWASM and custom EVM interpreter
130 lines
3.5 KiB
Go
130 lines
3.5 KiB
Go
// Copyright 2015 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 downloader
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import (
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"fmt"
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"strings"
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"sync"
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"testing"
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"time"
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)
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const OverwriteBlockCacheItems = 1024
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const OverwriteMaxForkAncestry = 3000
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// Reduce some of the parameters to make the tester faster.
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func init() {
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blockCacheMaxItems = OverwriteBlockCacheItems
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fsHeaderSafetyNet = 256
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fsHeaderContCheck = 50 * time.Millisecond
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fullMaxForkAncestry = OverwriteMaxForkAncestry
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fsHeaderContCheck = 500 * time.Millisecond
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}
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func TestRemoteHeaderRequestSpan(t *testing.T) {
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testCases := []struct {
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remoteHeight uint64
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localHeight uint64
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expected []int
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}{
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// Remote is way higher. We should ask for the remote head and go backwards
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{1500, 1000,
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[]int{1323, 1339, 1355, 1371, 1387, 1403, 1419, 1435, 1451, 1467, 1483, 1499},
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},
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{15000, 13006,
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[]int{14823, 14839, 14855, 14871, 14887, 14903, 14919, 14935, 14951, 14967, 14983, 14999},
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},
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// Remote is pretty close to us. We don't have to fetch as many
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{1200, 1150,
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[]int{1149, 1154, 1159, 1164, 1169, 1174, 1179, 1184, 1189, 1194, 1199},
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},
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// Remote is equal to us (so on a fork with higher td)
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// We should get the closest couple of ancestors
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{1500, 1500,
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[]int{1497, 1499},
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},
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// We're higher than the remote! Odd
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{1000, 1500,
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[]int{997, 999},
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},
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// Check some weird edgecases that it behaves somewhat rationally
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{0, 1500,
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[]int{0, 2},
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},
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{6000000, 0,
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[]int{5999823, 5999839, 5999855, 5999871, 5999887, 5999903, 5999919, 5999935, 5999951, 5999967, 5999983, 5999999},
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},
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{0, 0,
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[]int{0, 2},
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},
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}
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reqs := func(from, count, span int) []int {
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var r []int
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num := from
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for len(r) < count {
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r = append(r, num)
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num += span + 1
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}
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return r
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}
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for i, tt := range testCases {
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from, count, span, max := calculateRequestSpan(tt.remoteHeight, tt.localHeight)
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data := reqs(int(from), count, span)
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if max != uint64(data[len(data)-1]) {
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t.Errorf("test %d: wrong last value %d != %d", i, data[len(data)-1], max)
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}
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failed := false
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if len(data) != len(tt.expected) {
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failed = true
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t.Errorf("test %d: length wrong, expected %d got %d", i, len(tt.expected), len(data))
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} else {
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for j, n := range data {
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if n != tt.expected[j] {
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failed = true
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break
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}
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}
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}
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if failed {
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res := strings.Replace(fmt.Sprint(data), " ", ",", -1)
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exp := strings.Replace(fmt.Sprint(tt.expected), " ", ",", -1)
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t.Logf("got: %v\n", res)
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t.Logf("exp: %v\n", exp)
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t.Errorf("test %d: wrong values", i)
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}
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}
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}
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func TestDataRace(t *testing.T) {
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wg := &sync.WaitGroup{}
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const N = 10
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wg.Add(N)
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ln := getTestChainBase().len()
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for i := 0; i < N; i++ {
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go makeFork(wg, ln, i)
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}
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wg.Wait()
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}
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func makeFork(wg *sync.WaitGroup, ln, i int) {
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getTestChainBase().makeFork(ln, false, uint8(i))
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wg.Done()
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}
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