erigon-pulse/tests/difficulty_test_util.go
ledgerwatch 1a0e9275e1
Headers PoC - intermediate changes (#1016)
* First algorithm

* Update doc

* Second algorithm implemented

* Prepend (unfinished)

* More on prepend

* More fixes

* Change CalcDifficulty interface

* fix make test

* Fix formatting

* Another test

* More on Preprend

* Another test for Prepend

* More tests for Prepend

* More tests for Prepend

* Move files to turbo

* Add another test for Prepend

* Started adding Append algorithm

* More work on Append

* Start changing the terminology

* Split trees into segments

* More fixes

* Fix compilation

* Connect

* FindAnchors, FindTip

* Tip has anchor and not anchorParent field

* Remove Prepend and Append

* Add Connect

* NewAnchor algorithm

* More to recovery from files

* Add more to AddAnchor

* Request more headers

* Header fix-sizes serialisation

* Upgrade CI to 1.15

* Fix lint

* Fix lint

* replace RLP with fixed-sized serialisation

* Fix lint

* More algos

* Fix lint
2020-08-31 06:27:51 +01:00

70 lines
2.5 KiB
Go

// Copyright 2017 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 tests
import (
"fmt"
"math/big"
"github.com/ledgerwatch/turbo-geth/common"
"github.com/ledgerwatch/turbo-geth/common/math"
"github.com/ledgerwatch/turbo-geth/consensus/ethash"
"github.com/ledgerwatch/turbo-geth/core/types"
"github.com/ledgerwatch/turbo-geth/params"
)
//go:generate gencodec -type DifficultyTest -field-override difficultyTestMarshaling -out gen_difficultytest.go
type DifficultyTest struct {
ParentTimestamp uint64 `json:"parentTimestamp"`
ParentDifficulty *big.Int `json:"parentDifficulty"`
UncleHash common.Hash `json:"parentUncles"`
CurrentTimestamp uint64 `json:"currentTimestamp"`
CurrentBlockNumber uint64 `json:"currentBlockNumber"`
CurrentDifficulty *big.Int `json:"currentDifficulty"`
}
type difficultyTestMarshaling struct {
ParentTimestamp math.HexOrDecimal64
ParentDifficulty *math.HexOrDecimal256
CurrentTimestamp math.HexOrDecimal64
CurrentDifficulty *math.HexOrDecimal256
UncleHash common.Hash
CurrentBlockNumber math.HexOrDecimal64
}
func (test *DifficultyTest) Run(config *params.ChainConfig) error {
parentNumber := big.NewInt(int64(test.CurrentBlockNumber - 1))
parent := &types.Header{
Difficulty: test.ParentDifficulty,
Time: test.ParentTimestamp,
Number: parentNumber,
UncleHash: test.UncleHash,
}
actual := ethash.CalcDifficulty(config, test.CurrentTimestamp, parent.Time, parent.Difficulty, parent.Number, parent.UncleHash)
exp := test.CurrentDifficulty
if actual.Cmp(exp) != 0 {
return fmt.Errorf("parent[time %v diff %v unclehash:%x] child[time %v number %v] diff %v != expected %v",
test.ParentTimestamp, test.ParentDifficulty, test.UncleHash,
test.CurrentTimestamp, test.CurrentBlockNumber, actual, exp)
}
return nil
}