github.com/halybang/go-ethereum@v1.0.5-0.20180325041310-3b262bc1367c/consensus/ethash/consensus_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 ethash 18 19 import ( 20 "encoding/json" 21 "math/big" 22 //"os" 23 //"path/filepath" 24 //"testing" 25 26 "github.com/wanchain/go-wanchain/common/math" 27 //"github.com/wanchain/go-wanchain/core/types" 28 //"github.com/wanchain/go-wanchain/params" 29 //"testing" 30 //"os" 31 //"path/filepath" 32 ) 33 34 type diffTest struct { 35 ParentTimestamp uint64 36 ParentDifficulty *big.Int 37 CurrentTimestamp uint64 38 CurrentBlocknumber *big.Int 39 CurrentDifficulty *big.Int 40 } 41 42 func (d *diffTest) UnmarshalJSON(b []byte) (err error) { 43 var ext struct { 44 ParentTimestamp string 45 ParentDifficulty string 46 CurrentTimestamp string 47 CurrentBlocknumber string 48 CurrentDifficulty string 49 } 50 if err := json.Unmarshal(b, &ext); err != nil { 51 return err 52 } 53 54 d.ParentTimestamp = math.MustParseUint64(ext.ParentTimestamp) 55 d.ParentDifficulty = math.MustParseBig256(ext.ParentDifficulty) 56 d.CurrentTimestamp = math.MustParseUint64(ext.CurrentTimestamp) 57 d.CurrentBlocknumber = math.MustParseBig256(ext.CurrentBlocknumber) 58 d.CurrentDifficulty = math.MustParseBig256(ext.CurrentDifficulty) 59 60 return nil 61 } 62 63 // This case is out-of-date due to consensus protocol migrated to Byzantium 64 //func TestCalcDifficulty(t *testing.T) { 65 // file, err := os.Open(filepath.Join("..", "..", "tests", "testdata", "BasicTests", "difficulty.json")) 66 // if err != nil { 67 // t.Skip(err) 68 // } 69 // defer file.Close() 70 // 71 // tests := make(map[string]diffTest) 72 // err = json.NewDecoder(file).Decode(&tests) 73 // if err != nil { 74 // t.Fatal(err) 75 // } 76 // 77 // config := ¶ms.ChainConfig{ByzantiumBlock: big.NewInt(1150000)} 78 // for name, test := range tests { 79 // number := new(big.Int).Sub(test.CurrentBlocknumber, big.NewInt(1)) 80 // diff := CalcDifficulty(config, test.CurrentTimestamp, &types.Header{ 81 // Number: number, 82 // Time: new(big.Int).SetUint64(test.ParentTimestamp), 83 // Difficulty: test.ParentDifficulty, 84 // }) 85 // if diff.Cmp(test.CurrentDifficulty) != 0 { 86 // t.Error(name, "failed. Expected", test.CurrentDifficulty, "and calculated", diff) 87 // } 88 // } 89 //}