117 lines
3.9 KiB
Go
117 lines
3.9 KiB
Go
// Copyright 2020 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 core
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import (
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"errors"
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"fmt"
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"math/big"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/consensus"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/params"
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)
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func verifyUnbrokenCanonchain(hc *HeaderChain) error {
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h := hc.CurrentHeader()
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for {
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canonHash := rawdb.ReadCanonicalHash(hc.chainDb, h.Number.Uint64())
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if exp := h.Hash(); canonHash != exp {
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return fmt.Errorf("Canon hash chain broken, block %d got %x, expected %x",
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h.Number, canonHash[:8], exp[:8])
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}
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// Verify that we have the TD
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if td := rawdb.ReadTd(hc.chainDb, canonHash, h.Number.Uint64()); td == nil {
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return fmt.Errorf("Canon TD missing at block %d", h.Number)
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}
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if h.Number.Uint64() == 0 {
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break
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}
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h = hc.GetHeader(h.ParentHash, h.Number.Uint64()-1)
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}
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return nil
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}
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func testInsert(t *testing.T, hc *HeaderChain, chain []*types.Header, wantStatus WriteStatus, wantErr error) {
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t.Helper()
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status, err := hc.InsertHeaderChain(chain, time.Now())
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if status != wantStatus {
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t.Errorf("wrong write status from InsertHeaderChain: got %v, want %v", status, wantStatus)
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}
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// Always verify that the header chain is unbroken
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if err := verifyUnbrokenCanonchain(hc); err != nil {
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t.Fatal(err)
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}
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if !errors.Is(err, wantErr) {
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t.Fatalf("unexpected error from InsertHeaderChain: %v", err)
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}
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}
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// This test checks status reporting of InsertHeaderChain.
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func TestHeaderInsertion(t *testing.T) {
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var (
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db = rawdb.NewMemoryDatabase()
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genesis = (&Genesis{BaseFee: big.NewInt(params.InitialBaseFee)}).MustCommit(db)
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)
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hc, err := NewHeaderChain(db, params.AllEthashProtocolChanges, ethash.NewFaker(), func() bool { return false })
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if err != nil {
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t.Fatal(err)
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}
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// chain A: G->A1->A2...A128
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chainA := makeHeaderChain(genesis.Header(), 128, ethash.NewFaker(), db, 10)
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// chain B: G->A1->B2...B128
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chainB := makeHeaderChain(chainA[0], 128, ethash.NewFaker(), db, 10)
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log.Root().SetHandler(log.StdoutHandler)
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// Inserting 64 headers on an empty chain, expecting
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// 1 callbacks, 1 canon-status, 0 sidestatus,
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testInsert(t, hc, chainA[:64], CanonStatTy, nil)
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// Inserting 64 identical headers, expecting
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// 0 callbacks, 0 canon-status, 0 sidestatus,
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testInsert(t, hc, chainA[:64], NonStatTy, nil)
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// Inserting the same some old, some new headers
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// 1 callbacks, 1 canon, 0 side
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testInsert(t, hc, chainA[32:96], CanonStatTy, nil)
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// Inserting side blocks, but not overtaking the canon chain
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testInsert(t, hc, chainB[0:32], SideStatTy, nil)
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// Inserting more side blocks, but we don't have the parent
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testInsert(t, hc, chainB[34:36], NonStatTy, consensus.ErrUnknownAncestor)
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// Inserting more sideblocks, overtaking the canon chain
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testInsert(t, hc, chainB[32:97], CanonStatTy, nil)
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// Inserting more A-headers, taking back the canonicality
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testInsert(t, hc, chainA[90:100], CanonStatTy, nil)
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// And B becomes canon again
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testInsert(t, hc, chainB[97:107], CanonStatTy, nil)
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// And B becomes even longer
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testInsert(t, hc, chainB[107:128], CanonStatTy, nil)
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}
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