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accounts, ethclient: minor tweaks on the new simulated backend (#28799)
* accounts, ethclient: minor tweaks on the new simulated backend * ethclient/simulated: add an initial batch of gas options * accounts, ethclient: remove mandatory gasLimit constructor param * accounts, ethclient: minor option naming tweaks
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| // Copyright 2024 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 simulated | ||
|
|
||
| import ( | ||
| "github.com/ethereum/go-ethereum/eth/ethconfig" | ||
| "github.com/ethereum/go-ethereum/node" | ||
| ) | ||
|
|
||
| // WithBlockGasLimit configures the simulated backend to target a specific gas limit | ||
| // when producing blocks. | ||
| func WithBlockGasLimit(gaslimit uint64) func(nodeConf *node.Config, ethConf *ethconfig.Config) { | ||
| return func(nodeConf *node.Config, ethConf *ethconfig.Config) { | ||
| ethConf.Genesis.GasLimit = gaslimit | ||
| ethConf.Miner.GasCeil = gaslimit | ||
| } | ||
| } | ||
|
|
||
| // WithCallGasLimit configures the simulated backend to cap eth_calls to a specific | ||
| // gas limit when running client operations. | ||
| func WithCallGasLimit(gaslimit uint64) func(nodeConf *node.Config, ethConf *ethconfig.Config) { | ||
| return func(nodeConf *node.Config, ethConf *ethconfig.Config) { | ||
| ethConf.RPCGasCap = gaslimit | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| // Copyright 2024 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 simulated | ||
|
|
||
| import ( | ||
| "context" | ||
| "math/big" | ||
| "strings" | ||
| "testing" | ||
|
|
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| "github.com/ethereum/go-ethereum" | ||
| "github.com/ethereum/go-ethereum/core" | ||
| "github.com/ethereum/go-ethereum/params" | ||
| ) | ||
|
|
||
| // Tests that the simulator starts with the initial gas limit in the genesis block, | ||
| // and that it keeps the same target value. | ||
| func TestWithBlockGasLimitOption(t *testing.T) { | ||
| // Construct a simulator, targeting a different gas limit | ||
| sim := NewBackend(core.GenesisAlloc{}, WithBlockGasLimit(12_345_678)) | ||
| defer sim.Close() | ||
|
|
||
| client := sim.Client() | ||
| genesis, err := client.BlockByNumber(context.Background(), big.NewInt(0)) | ||
| if err != nil { | ||
| t.Fatalf("failed to retrieve genesis block: %v", err) | ||
| } | ||
| if genesis.GasLimit() != 12_345_678 { | ||
| t.Errorf("genesis gas limit mismatch: have %v, want %v", genesis.GasLimit(), 12_345_678) | ||
| } | ||
| // Produce a number of blocks and verify the locked in gas target | ||
| sim.Commit() | ||
| head, err := client.BlockByNumber(context.Background(), big.NewInt(1)) | ||
| if err != nil { | ||
| t.Fatalf("failed to retrieve head block: %v", err) | ||
| } | ||
| if head.GasLimit() != 12_345_678 { | ||
| t.Errorf("head gas limit mismatch: have %v, want %v", head.GasLimit(), 12_345_678) | ||
| } | ||
| } | ||
|
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| // Tests that the simulator honors the RPC call caps set by the options. | ||
| func TestWithCallGasLimitOption(t *testing.T) { | ||
| // Construct a simulator, targeting a different gas limit | ||
| sim := NewBackend(core.GenesisAlloc{ | ||
| testAddr: {Balance: big.NewInt(10000000000000000)}, | ||
| }, WithCallGasLimit(params.TxGas-1)) | ||
| defer sim.Close() | ||
|
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||
| client := sim.Client() | ||
| _, err := client.CallContract(context.Background(), ethereum.CallMsg{ | ||
| From: testAddr, | ||
| To: &testAddr, | ||
| Gas: 21000, | ||
| }, nil) | ||
| if !strings.Contains(err.Error(), core.ErrIntrinsicGas.Error()) { | ||
| t.Fatalf("error mismatch: have %v, want %v", err, core.ErrIntrinsicGas) | ||
| } | ||
| } |