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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 (
db, _ = ethdb.NewMemDatabase()
state, _ = state.New(common.Hash{}, state.NewDatabase(db))
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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