53 lines
1.7 KiB
Go
53 lines
1.7 KiB
Go
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// Copyright 2015 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 state
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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/ethdb"
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)
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// Tests that updating a state trie does not leak any database writes prior to
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// actually committing the state.
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func TestUpdateLeaks(t *testing.T) {
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// Create an empty state database
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db, _ := ethdb.NewMemDatabase()
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state, _ := New(common.Hash{}, db)
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// Update it with some accounts
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for i := byte(0); i < 255; i++ {
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obj := state.GetOrNewStateObject(common.BytesToAddress([]byte{i}))
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obj.AddBalance(big.NewInt(int64(11 * i)))
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obj.SetNonce(uint64(42 * i))
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if i%2 == 0 {
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obj.SetState(common.BytesToHash([]byte{i, i, i}), common.BytesToHash([]byte{i, i, i, i}))
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}
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if i%3 == 0 {
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obj.SetCode([]byte{i, i, i, i, i})
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}
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state.UpdateStateObject(obj)
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}
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// Ensure that no data was leaked into the database
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for _, key := range db.Keys() {
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value, _ := db.Get(key)
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t.Errorf("State leaked into database: %x -> %x", key, value)
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}
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}
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