2d08c99009
This is a rewrite of the 'simulated backend', an implementation of the ethclient interfaces which is backed by a simulated blockchain. It was getting annoying to maintain the old version of the simulated backend feature because there was a lot of code duplication with the main client. The new version is built using parts that we already have: an in-memory geth node instance running in developer mode provides the chain, while the Go API is provided by ethclient. A backwards-compatibility wrapper is provided, but the simulated backend has also moved to a more sensible import path: github.com/ethereum/go-ethereum/ethclient/simulated --------- Co-authored-by: Felix Lange <fjl@twurst.com> Co-authored-by: Gary Rong <garyrong0905@gmail.com>
53 lines
1.8 KiB
Go
53 lines
1.8 KiB
Go
// Copyright 2015 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 backends
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core"
|
|
"github.com/ethereum/go-ethereum/ethclient/simulated"
|
|
)
|
|
|
|
// SimulatedBackend is a simulated blockchain.
|
|
// Deprecated: use package github.com/ethereum/go-ethereum/ethclient/simulated instead.
|
|
type SimulatedBackend struct {
|
|
*simulated.Backend
|
|
simulated.Client
|
|
}
|
|
|
|
// Fork sets the head to a new block, which is based on the provided parentHash.
|
|
func (b *SimulatedBackend) Fork(ctx context.Context, parentHash common.Hash) error {
|
|
return b.Backend.Fork(parentHash)
|
|
}
|
|
|
|
// NewSimulatedBackend creates a new binding backend using a simulated blockchain
|
|
// for testing purposes.
|
|
//
|
|
// A simulated backend always uses chainID 1337.
|
|
//
|
|
// Deprecated: please use simulated.Backend from package
|
|
// github.com/ethereum/go-ethereum/ethclient/simulated instead.
|
|
func NewSimulatedBackend(alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend {
|
|
b := simulated.New(alloc, gasLimit)
|
|
return &SimulatedBackend{
|
|
Backend: b,
|
|
Client: b.Client(),
|
|
}
|
|
}
|