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  }