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80 lines
2.1 KiB
80 lines
2.1 KiB
// Copyright 2020 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU 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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// go-ethereum 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package ethtest
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import (
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"crypto/rand"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/core/types"
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)
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// largeNumber returns a very large big.Int.
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func largeNumber(megabytes int) *big.Int {
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buf := make([]byte, megabytes*1024*1024)
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rand.Read(buf)
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bigint := new(big.Int)
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bigint.SetBytes(buf)
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return bigint
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}
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// largeBuffer returns a very large buffer.
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func largeBuffer(megabytes int) []byte {
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buf := make([]byte, megabytes*1024*1024)
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rand.Read(buf)
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return buf
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}
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// largeString returns a very large string.
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func largeString(megabytes int) string {
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buf := make([]byte, megabytes*1024*1024)
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rand.Read(buf)
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return hexutil.Encode(buf)
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}
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func largeBlock() *types.Block {
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return types.NewBlockWithHeader(largeHeader())
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}
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// Returns a random hash
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func randHash() common.Hash {
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var h common.Hash
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rand.Read(h[:])
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return h
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}
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func largeHeader() *types.Header {
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return &types.Header{
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MixDigest: randHash(),
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ReceiptHash: randHash(),
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TxHash: randHash(),
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Nonce: types.BlockNonce{},
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Extra: []byte{},
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Bloom: types.Bloom{},
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GasUsed: 0,
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Coinbase: common.Address{},
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GasLimit: 0,
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UncleHash: types.EmptyUncleHash,
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Time: 1337,
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ParentHash: randHash(),
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Root: randHash(),
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Number: largeNumber(2),
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Difficulty: largeNumber(2),
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}
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}
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