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- // Copyright 2017 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 eth
- import (
- "reflect"
- "testing"
- "github.com/davecgh/go-spew/spew"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/core/state"
- "github.com/ethereum/go-ethereum/ethdb"
- )
- var dumper = spew.ConfigState{Indent: " "}
- func TestStorageRangeAt(t *testing.T) {
- // Create a state where account 0x010000... has a few storage entries.
- var (
- state, _ = state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
- addr = common.Address{0x01}
- keys = []common.Hash{ // hashes of Keys of storage
- common.HexToHash("340dd630ad21bf010b4e676dbfa9ba9a02175262d1fa356232cfde6cb5b47ef2"),
- common.HexToHash("426fcb404ab2d5d8e61a3d918108006bbb0a9be65e92235bb10eefbdb6dcd053"),
- common.HexToHash("48078cfed56339ea54962e72c37c7f588fc4f8e5bc173827ba75cb10a63a96a5"),
- common.HexToHash("5723d2c3a83af9b735e3b7f21531e5623d183a9095a56604ead41f3582fdfb75"),
- }
- storage = storageMap{
- keys[0]: {Key: &common.Hash{0x02}, Value: common.Hash{0x01}},
- keys[1]: {Key: &common.Hash{0x04}, Value: common.Hash{0x02}},
- keys[2]: {Key: &common.Hash{0x01}, Value: common.Hash{0x03}},
- keys[3]: {Key: &common.Hash{0x03}, Value: common.Hash{0x04}},
- }
- )
- for _, entry := range storage {
- state.SetState(addr, *entry.Key, entry.Value)
- }
- // Check a few combinations of limit and start/end.
- tests := []struct {
- start []byte
- limit int
- want StorageRangeResult
- }{
- {
- start: []byte{}, limit: 0,
- want: StorageRangeResult{storageMap{}, &keys[0]},
- },
- {
- start: []byte{}, limit: 100,
- want: StorageRangeResult{storage, nil},
- },
- {
- start: []byte{}, limit: 2,
- want: StorageRangeResult{storageMap{keys[0]: storage[keys[0]], keys[1]: storage[keys[1]]}, &keys[2]},
- },
- {
- start: []byte{0x00}, limit: 4,
- want: StorageRangeResult{storage, nil},
- },
- {
- start: []byte{0x40}, limit: 2,
- want: StorageRangeResult{storageMap{keys[1]: storage[keys[1]], keys[2]: storage[keys[2]]}, &keys[3]},
- },
- }
- for _, test := range tests {
- result, err := storageRangeAt(state.StorageTrie(addr), test.start, test.limit)
- if err != nil {
- t.Error(err)
- }
- if !reflect.DeepEqual(result, test.want) {
- t.Fatalf("wrong result for range 0x%x.., limit %d:\ngot %s\nwant %s",
- test.start, test.limit, dumper.Sdump(result), dumper.Sdump(&test.want))
- }
- }
- }
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