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95 lines
3.4 KiB
Go
95 lines
3.4 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser 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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// The go-ethereum library 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package vm
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import (
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"math/big"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/params"
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)
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type dummyContractRef struct {
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calledForEach bool
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}
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func (dummyContractRef) ReturnGas(*big.Int) {}
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func (dummyContractRef) Address() common.Address { return common.Address{} }
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func (dummyContractRef) Value() *big.Int { return new(big.Int) }
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func (dummyContractRef) SetCode(common.Hash, []byte) {}
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func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) {
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d.calledForEach = true
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}
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func (d *dummyContractRef) SubBalance(amount *big.Int) {}
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func (d *dummyContractRef) AddBalance(amount *big.Int) {}
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func (d *dummyContractRef) SetBalance(*big.Int) {}
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func (d *dummyContractRef) SetNonce(uint64) {}
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func (d *dummyContractRef) Balance() *big.Int { return new(big.Int) }
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type dummyStateDB struct {
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NoopStateDB
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ref *dummyContractRef
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}
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func TestStoreCapture(t *testing.T) {
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var (
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env = NewEVM(Context{}, nil, params.TestChainConfig, Config{EnableJit: false, ForceJit: false})
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logger = NewStructLogger(nil)
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mem = NewMemory()
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stack = newstack()
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contract = NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 0)
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)
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stack.push(big.NewInt(1))
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stack.push(big.NewInt(0))
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var index common.Hash
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logger.CaptureState(env, 0, SSTORE, 0, 0, mem, stack, contract, 0, nil)
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if len(logger.changedValues[contract.Address()]) == 0 {
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t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), len(logger.changedValues[contract.Address()]))
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}
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exp := common.BigToHash(big.NewInt(1))
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if logger.changedValues[contract.Address()][index] != exp {
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t.Errorf("expected %x, got %x", exp, logger.changedValues[contract.Address()][index])
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}
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}
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func TestStorageCapture(t *testing.T) {
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t.Skip("implementing this function is difficult. it requires all sort of interfaces to be implemented which isn't trivial. The value (the actual test) isn't worth it")
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var (
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ref = &dummyContractRef{}
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contract = NewContract(ref, ref, new(big.Int), 0)
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env = NewEVM(Context{}, dummyStateDB{ref: ref}, params.TestChainConfig, Config{EnableJit: false, ForceJit: false})
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logger = NewStructLogger(nil)
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mem = NewMemory()
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stack = newstack()
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)
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logger.CaptureState(env, 0, STOP, 0, 0, mem, stack, contract, 0, nil)
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if ref.calledForEach {
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t.Error("didn't expect for each to be called")
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}
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logger = NewStructLogger(&LogConfig{FullStorage: true})
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logger.CaptureState(env, 0, STOP, 0, 0, mem, stack, contract, 0, nil)
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if !ref.calledForEach {
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t.Error("expected for each to be called")
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}
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}
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