github.com/linapex/ethereum-dpos-chinese@v0.0.0-20190316121959-b78b3a4a1ece/eth/api_test.go (about)

     1  
     2  //<developer>
     3  //    <name>linapex 曹一峰</name>
     4  //    <email>linapex@163.com</email>
     5  //    <wx>superexc</wx>
     6  //    <qqgroup>128148617</qqgroup>
     7  //    <url>https://jsq.ink</url>
     8  //    <role>pku engineer</role>
     9  //    <date>2019-03-16 12:09:38</date>
    10  //</624342632927072256>
    11  
    12  
    13  package eth
    14  
    15  import (
    16  	"reflect"
    17  	"testing"
    18  
    19  	"github.com/davecgh/go-spew/spew"
    20  	"github.com/ethereum/go-ethereum/common"
    21  	"github.com/ethereum/go-ethereum/core/state"
    22  	"github.com/ethereum/go-ethereum/ethdb"
    23  )
    24  
    25  var dumper = spew.ConfigState{Indent: "    "}
    26  
    27  func TestStorageRangeAt(t *testing.T) {
    28  //创建一个帐户0x010000的状态…有几个存储条目。
    29  	var (
    30  		state, _ = state.New(common.Hash{}, state.NewDatabase(ethdb.NewMemDatabase()))
    31  		addr     = common.Address{0x01}
    32  keys     = []common.Hash{ //存储键散列
    33  			common.HexToHash("340dd630ad21bf010b4e676dbfa9ba9a02175262d1fa356232cfde6cb5b47ef2"),
    34  			common.HexToHash("426fcb404ab2d5d8e61a3d918108006bbb0a9be65e92235bb10eefbdb6dcd053"),
    35  			common.HexToHash("48078cfed56339ea54962e72c37c7f588fc4f8e5bc173827ba75cb10a63a96a5"),
    36  			common.HexToHash("5723d2c3a83af9b735e3b7f21531e5623d183a9095a56604ead41f3582fdfb75"),
    37  		}
    38  		storage = storageMap{
    39  			keys[0]: {Key: &common.Hash{0x02}, Value: common.Hash{0x01}},
    40  			keys[1]: {Key: &common.Hash{0x04}, Value: common.Hash{0x02}},
    41  			keys[2]: {Key: &common.Hash{0x01}, Value: common.Hash{0x03}},
    42  			keys[3]: {Key: &common.Hash{0x03}, Value: common.Hash{0x04}},
    43  		}
    44  	)
    45  	for _, entry := range storage {
    46  		state.SetState(addr, *entry.Key, entry.Value)
    47  	}
    48  
    49  //检查限制和开始/结束的几个组合。
    50  	tests := []struct {
    51  		start []byte
    52  		limit int
    53  		want  StorageRangeResult
    54  	}{
    55  		{
    56  			start: []byte{}, limit: 0,
    57  			want: StorageRangeResult{storageMap{}, &keys[0]},
    58  		},
    59  		{
    60  			start: []byte{}, limit: 100,
    61  			want: StorageRangeResult{storage, nil},
    62  		},
    63  		{
    64  			start: []byte{}, limit: 2,
    65  			want: StorageRangeResult{storageMap{keys[0]: storage[keys[0]], keys[1]: storage[keys[1]]}, &keys[2]},
    66  		},
    67  		{
    68  			start: []byte{0x00}, limit: 4,
    69  			want: StorageRangeResult{storage, nil},
    70  		},
    71  		{
    72  			start: []byte{0x40}, limit: 2,
    73  			want: StorageRangeResult{storageMap{keys[1]: storage[keys[1]], keys[2]: storage[keys[2]]}, &keys[3]},
    74  		},
    75  	}
    76  	for _, test := range tests {
    77  		result, err := storageRangeAt(state.StorageTrie(addr), test.start, test.limit)
    78  		if err != nil {
    79  			t.Error(err)
    80  		}
    81  		if !reflect.DeepEqual(result, test.want) {
    82  			t.Fatalf("wrong result for range 0x%x.., limit %d:\ngot %s\nwant %s",
    83  				test.start, test.limit, dumper.Sdump(result), dumper.Sdump(&test.want))
    84  		}
    85  	}
    86  }
    87