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- // Copyright 2020 The go-ethereum Authors
- // This file is part of the go-ethereum library.
- //
- // The go-ethereum library is free software: you can redistribute it and/or modify
- // it under the terms of the GNU Lesser General Public License as published by
- // the Free Software Foundation, either version 3 of the License, or
- // (at your option) any later version.
- //
- // The go-ethereum library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU Lesser General Public License for more details.
- //
- // You should have received a copy of the GNU Lesser General Public License
- // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
- package core
- import (
- "errors"
- "fmt"
- "testing"
- "time"
- "github.com/ethereum/go-ethereum/consensus"
- "github.com/ethereum/go-ethereum/consensus/ethash"
- "github.com/ethereum/go-ethereum/core/rawdb"
- "github.com/ethereum/go-ethereum/core/types"
- "github.com/ethereum/go-ethereum/log"
- "github.com/ethereum/go-ethereum/params"
- )
- func verifyUnbrokenCanonchain(hc *HeaderChain) error {
- h := hc.CurrentHeader()
- for {
- canonHash := rawdb.ReadCanonicalHash(hc.chainDb, h.Number.Uint64())
- if exp := h.Hash(); canonHash != exp {
- return fmt.Errorf("Canon hash chain broken, block %d got %x, expected %x",
- h.Number, canonHash[:8], exp[:8])
- }
- // Verify that we have the TD
- if td := rawdb.ReadTd(hc.chainDb, canonHash, h.Number.Uint64()); td == nil {
- return fmt.Errorf("Canon TD missing at block %d", h.Number)
- }
- if h.Number.Uint64() == 0 {
- break
- }
- h = hc.GetHeader(h.ParentHash, h.Number.Uint64()-1)
- }
- return nil
- }
- func testInsert(t *testing.T, hc *HeaderChain, chain []*types.Header, wantStatus WriteStatus, wantErr error) {
- t.Helper()
- status, err := hc.InsertHeaderChain(chain, time.Now())
- if status != wantStatus {
- t.Errorf("wrong write status from InsertHeaderChain: got %v, want %v", status, wantStatus)
- }
- // Always verify that the header chain is unbroken
- if err := verifyUnbrokenCanonchain(hc); err != nil {
- t.Fatal(err)
- }
- if !errors.Is(err, wantErr) {
- t.Fatalf("unexpected error from InsertHeaderChain: %v", err)
- }
- }
- // This test checks status reporting of InsertHeaderChain.
- func TestHeaderInsertion(t *testing.T) {
- var (
- db = rawdb.NewMemoryDatabase()
- genesis = new(Genesis).MustCommit(db)
- )
- hc, err := NewHeaderChain(db, params.AllEthashProtocolChanges, ethash.NewFaker(), func() bool { return false })
- if err != nil {
- t.Fatal(err)
- }
- // chain A: G->A1->A2...A128
- chainA := makeHeaderChain(genesis.Header(), 128, ethash.NewFaker(), db, 10)
- // chain B: G->A1->B2...B128
- chainB := makeHeaderChain(chainA[0], 128, ethash.NewFaker(), db, 10)
- log.Root().SetHandler(log.StdoutHandler)
- // Inserting 64 headers on an empty chain, expecting
- // 1 callbacks, 1 canon-status, 0 sidestatus,
- testInsert(t, hc, chainA[:64], CanonStatTy, nil)
- // Inserting 64 identical headers, expecting
- // 0 callbacks, 0 canon-status, 0 sidestatus,
- testInsert(t, hc, chainA[:64], NonStatTy, nil)
- // Inserting the same some old, some new headers
- // 1 callbacks, 1 canon, 0 side
- testInsert(t, hc, chainA[32:96], CanonStatTy, nil)
- // Inserting side blocks, but not overtaking the canon chain
- testInsert(t, hc, chainB[0:32], SideStatTy, nil)
- // Inserting more side blocks, but we don't have the parent
- testInsert(t, hc, chainB[34:36], NonStatTy, consensus.ErrUnknownAncestor)
- // Inserting more sideblocks, overtaking the canon chain
- testInsert(t, hc, chainB[32:97], CanonStatTy, nil)
- // Inserting more A-headers, taking back the canonicality
- testInsert(t, hc, chainA[90:100], CanonStatTy, nil)
- // And B becomes canon again
- testInsert(t, hc, chainB[97:107], CanonStatTy, nil)
- // And B becomes even longer
- testInsert(t, hc, chainB[107:128], CanonStatTy, nil)
- }
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