github.com/codingfuture/orig-energi3@v0.8.4/eth/api_test.go (about)

     1  // Copyright 2017 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package eth
    18  
    19  import (
    20  	"reflect"
    21  	"testing"
    22  
    23  	"github.com/davecgh/go-spew/spew"
    24  	"github.com/ethereum/go-ethereum/common"
    25  	"github.com/ethereum/go-ethereum/core/state"
    26  	"github.com/ethereum/go-ethereum/ethdb"
    27  )
    28  
    29  var dumper = spew.ConfigState{Indent: "    "}
    30  
    31  func TestStorageRangeAt(t *testing.T) {
    32  	// Create a state where account 0x010000... has a few storage entries.
    33  	var (
    34  		state, _ = state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
    35  		addr     = common.Address{0x01}
    36  		keys     = []common.Hash{ // hashes of Keys of storage
    37  			common.HexToHash("340dd630ad21bf010b4e676dbfa9ba9a02175262d1fa356232cfde6cb5b47ef2"),
    38  			common.HexToHash("426fcb404ab2d5d8e61a3d918108006bbb0a9be65e92235bb10eefbdb6dcd053"),
    39  			common.HexToHash("48078cfed56339ea54962e72c37c7f588fc4f8e5bc173827ba75cb10a63a96a5"),
    40  			common.HexToHash("5723d2c3a83af9b735e3b7f21531e5623d183a9095a56604ead41f3582fdfb75"),
    41  		}
    42  		storage = storageMap{
    43  			keys[0]: {Key: &common.Hash{0x02}, Value: common.Hash{0x01}},
    44  			keys[1]: {Key: &common.Hash{0x04}, Value: common.Hash{0x02}},
    45  			keys[2]: {Key: &common.Hash{0x01}, Value: common.Hash{0x03}},
    46  			keys[3]: {Key: &common.Hash{0x03}, Value: common.Hash{0x04}},
    47  		}
    48  	)
    49  	for _, entry := range storage {
    50  		state.SetState(addr, *entry.Key, entry.Value)
    51  	}
    52  
    53  	// Check a few combinations of limit and start/end.
    54  	tests := []struct {
    55  		start []byte
    56  		limit int
    57  		want  StorageRangeResult
    58  	}{
    59  		{
    60  			start: []byte{}, limit: 0,
    61  			want: StorageRangeResult{storageMap{}, &keys[0]},
    62  		},
    63  		{
    64  			start: []byte{}, limit: 100,
    65  			want: StorageRangeResult{storage, nil},
    66  		},
    67  		{
    68  			start: []byte{}, limit: 2,
    69  			want: StorageRangeResult{storageMap{keys[0]: storage[keys[0]], keys[1]: storage[keys[1]]}, &keys[2]},
    70  		},
    71  		{
    72  			start: []byte{0x00}, limit: 4,
    73  			want: StorageRangeResult{storage, nil},
    74  		},
    75  		{
    76  			start: []byte{0x40}, limit: 2,
    77  			want: StorageRangeResult{storageMap{keys[1]: storage[keys[1]], keys[2]: storage[keys[2]]}, &keys[3]},
    78  		},
    79  	}
    80  	for _, test := range tests {
    81  		result, err := storageRangeAt(state.StorageTrie(addr), test.start, test.limit)
    82  		if err != nil {
    83  			t.Error(err)
    84  		}
    85  		if !reflect.DeepEqual(result, test.want) {
    86  			t.Fatalf("wrong result for range 0x%x.., limit %d:\ngot %s\nwant %s",
    87  				test.start, test.limit, dumper.Sdump(result), dumper.Sdump(&test.want))
    88  		}
    89  	}
    90  }