github.com/ethereum/go-ethereum@v1.14.3/accounts/abi/bind/backends/simulated.go (about) 1 // Copyright 2015 The go-ethereum Authors 2 // This file is part of the go-ethereum library. 3 // 4 // The go-ethereum library is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU Lesser General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // The go-ethereum library is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU Lesser General Public License for more details. 13 // 14 // You should have received a copy of the GNU Lesser General Public License 15 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. 16 17 package backends 18 19 import ( 20 "context" 21 22 "github.com/ethereum/go-ethereum/common" 23 "github.com/ethereum/go-ethereum/core/types" 24 "github.com/ethereum/go-ethereum/ethclient/simulated" 25 ) 26 27 // SimulatedBackend is a simulated blockchain. 28 // Deprecated: use package github.com/ethereum/go-ethereum/ethclient/simulated instead. 29 type SimulatedBackend struct { 30 *simulated.Backend 31 simulated.Client 32 } 33 34 // Fork sets the head to a new block, which is based on the provided parentHash. 35 func (b *SimulatedBackend) Fork(ctx context.Context, parentHash common.Hash) error { 36 return b.Backend.Fork(parentHash) 37 } 38 39 // NewSimulatedBackend creates a new binding backend using a simulated blockchain 40 // for testing purposes. 41 // 42 // A simulated backend always uses chainID 1337. 43 // 44 // Deprecated: please use simulated.Backend from package 45 // github.com/ethereum/go-ethereum/ethclient/simulated instead. 46 func NewSimulatedBackend(alloc types.GenesisAlloc, gasLimit uint64) *SimulatedBackend { 47 b := simulated.NewBackend(alloc, simulated.WithBlockGasLimit(gasLimit)) 48 return &SimulatedBackend{ 49 Backend: b, 50 Client: b.Client(), 51 } 52 }