9055cc14ec
* core/state/snapshot: remove wiper functionality * core/vm: remove unused 'unofficial' opcodes
80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
// Copyright 2019 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 snapshot
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import (
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"math/rand"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/ethdb/memorydb"
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)
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// Tests that given a database with random data content, all parts of a snapshot
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// can be crrectly wiped without touching anything else.
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func TestWipe(t *testing.T) {
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// Create a database with some random snapshot data
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db := memorydb.New()
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for i := 0; i < 128; i++ {
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rawdb.WriteAccountSnapshot(db, randomHash(), randomHash().Bytes())
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}
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// Add some random non-snapshot data too to make wiping harder
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for i := 0; i < 500; i++ {
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// Generate keys with wrong length for a state snapshot item
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keysuffix := make([]byte, 31)
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rand.Read(keysuffix)
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db.Put(append(rawdb.SnapshotAccountPrefix, keysuffix...), randomHash().Bytes())
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keysuffix = make([]byte, 33)
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rand.Read(keysuffix)
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db.Put(append(rawdb.SnapshotAccountPrefix, keysuffix...), randomHash().Bytes())
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}
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count := func() (items int) {
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it := db.NewIterator(rawdb.SnapshotAccountPrefix, nil)
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defer it.Release()
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for it.Next() {
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if len(it.Key()) == len(rawdb.SnapshotAccountPrefix)+common.HashLength {
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items++
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}
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}
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return items
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}
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// Sanity check that all the keys are present
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if items := count(); items != 128 {
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t.Fatalf("snapshot size mismatch: have %d, want %d", items, 128)
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}
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// Wipe the accounts
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if err := wipeKeyRange(db, "accounts", rawdb.SnapshotAccountPrefix, nil, nil,
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len(rawdb.SnapshotAccountPrefix)+common.HashLength, snapWipedAccountMeter, true); err != nil {
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t.Fatal(err)
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}
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// Iterate over the database end ensure no snapshot information remains
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if items := count(); items != 0 {
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t.Fatalf("snapshot size mismatch: have %d, want %d", items, 0)
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}
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// Iterate over the database and ensure miscellaneous items are present
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items := 0
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it := db.NewIterator(nil, nil)
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defer it.Release()
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for it.Next() {
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items++
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}
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if items != 1000 {
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t.Fatalf("misc item count mismatch: have %d, want %d", items, 1000)
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}
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}
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