mining/mining_test.go

   1 // Copyright (c) 2014-2016 The btcsuite developers
   2 // Use of this source code is governed by an ISC
   3 // license that can be found in the LICENSE file.
   4
   5 package mining
   6
   7 import (
   8         "fmt"
   9         "testing"
  10         "time"
  11
  12         "github.com/bytom/consensus"
  13         "github.com/bytom/protocol/bc"
  14         "github.com/bytom/protocol/bc/legacy"
  15         "github.com/bytom/protocol/state"
  16 )
  17
  18 func TestNewInitBlock(t *testing.T) {
  19         coinbaseTx, err := createCoinbaseTx(0, 1, []byte{})
  20         if err != nil {
  21                 t.Error(err)
  22         }
  23         merkleRoot, err := bc.MerkleRoot([]*bc.Tx{coinbaseTx.Tx})
  24         if err != nil {
  25                 t.Error(err)
  26         }
  27         snap := state.Empty()
  28         if err := snap.ApplyTx(coinbaseTx.Tx); err != nil {
  29                 t.Error(err)
  30         }
  31
  32         b := &legacy.Block{
  33                 BlockHeader: legacy.BlockHeader{
  34                         Version:           1,
  35                         Height:            1,
  36                         PreviousBlockHash: bc.Hash{},
  37                         TimestampMS:       bc.Millis(time.Now()),
  38                         BlockCommitment: legacy.BlockCommitment{
  39                                 TransactionsMerkleRoot: merkleRoot,
  40                                 AssetsMerkleRoot:       snap.Tree.RootHash(),
  41                         },
  42                         Bits: uint64(2161727821138738707),
  43                 },
  44                 Transactions: []*legacy.Tx{coinbaseTx},
  45         }
  46
  47         for i := uint64(0); i <= 10000000000000; i++ {
  48                 b.Nonce = i
  49                 hash := b.Hash()
  50
  51                 if consensus.CheckProofOfWork(&hash, b.Bits) {
  52                         break
  53                 }
  54         }
  55
  56         rawBlock, err := b.MarshalText()
  57         if err != nil {
  58                 t.Error(err)
  59         }
  60         fmt.Println(string(rawBlock))
  61 }