github.com/linapex/ethereum-go-chinese@v0.0.0-20190316121929-f8b7a73c3fa1/les/request_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 19:16:39</date>
    10  //</624450096011939840>
    11  
    12  
    13  package les
    14  
    15  import (
    16  	"context"
    17  	"testing"
    18  	"time"
    19  
    20  	"github.com/ethereum/go-ethereum/common"
    21  	"github.com/ethereum/go-ethereum/core/rawdb"
    22  	"github.com/ethereum/go-ethereum/crypto"
    23  	"github.com/ethereum/go-ethereum/ethdb"
    24  	"github.com/ethereum/go-ethereum/light"
    25  )
    26  
    27  var testBankSecureTrieKey = secAddr(testBankAddress)
    28  
    29  func secAddr(addr common.Address) []byte {
    30  	return crypto.Keccak256(addr[:])
    31  }
    32  
    33  type accessTestFn func(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest
    34  
    35  func TestBlockAccessLes1(t *testing.T) { testAccess(t, 1, tfBlockAccess) }
    36  
    37  func TestBlockAccessLes2(t *testing.T) { testAccess(t, 2, tfBlockAccess) }
    38  
    39  func tfBlockAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    40  	return &light.BlockRequest{Hash: bhash, Number: number}
    41  }
    42  
    43  func TestReceiptsAccessLes1(t *testing.T) { testAccess(t, 1, tfReceiptsAccess) }
    44  
    45  func TestReceiptsAccessLes2(t *testing.T) { testAccess(t, 2, tfReceiptsAccess) }
    46  
    47  func tfReceiptsAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    48  	return &light.ReceiptsRequest{Hash: bhash, Number: number}
    49  }
    50  
    51  func TestTrieEntryAccessLes1(t *testing.T) { testAccess(t, 1, tfTrieEntryAccess) }
    52  
    53  func TestTrieEntryAccessLes2(t *testing.T) { testAccess(t, 2, tfTrieEntryAccess) }
    54  
    55  func tfTrieEntryAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    56  	if number := rawdb.ReadHeaderNumber(db, bhash); number != nil {
    57  		return &light.TrieRequest{Id: light.StateTrieID(rawdb.ReadHeader(db, bhash, *number)), Key: testBankSecureTrieKey}
    58  	}
    59  	return nil
    60  }
    61  
    62  func TestCodeAccessLes1(t *testing.T) { testAccess(t, 1, tfCodeAccess) }
    63  
    64  func TestCodeAccessLes2(t *testing.T) { testAccess(t, 2, tfCodeAccess) }
    65  
    66  func tfCodeAccess(db ethdb.Database, bhash common.Hash, num uint64) light.OdrRequest {
    67  	number := rawdb.ReadHeaderNumber(db, bhash)
    68  	if number != nil {
    69  		return nil
    70  	}
    71  	header := rawdb.ReadHeader(db, bhash, *number)
    72  	if header.Number.Uint64() < testContractDeployed {
    73  		return nil
    74  	}
    75  	sti := light.StateTrieID(header)
    76  	ci := light.StorageTrieID(sti, crypto.Keccak256Hash(testContractAddr[:]), common.Hash{})
    77  	return &light.CodeRequest{Id: ci, Hash: crypto.Keccak256Hash(testContractCodeDeployed)}
    78  }
    79  
    80  func testAccess(t *testing.T, protocol int, fn accessTestFn) {
    81  //组装测试环境
    82  	server, client, tearDown := newClientServerEnv(t, 4, protocol, nil, true)
    83  	defer tearDown()
    84  	client.pm.synchronise(client.rPeer)
    85  
    86  	test := func(expFail uint64) {
    87  		for i := uint64(0); i <= server.pm.blockchain.CurrentHeader().Number.Uint64(); i++ {
    88  			bhash := rawdb.ReadCanonicalHash(server.db, i)
    89  			if req := fn(client.db, bhash, i); req != nil {
    90  				ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
    91  				defer cancel()
    92  				err := client.pm.odr.Retrieve(ctx, req)
    93  				got := err == nil
    94  				exp := i < expFail
    95  				if exp && !got {
    96  					t.Errorf("object retrieval failed")
    97  				}
    98  				if !exp && got {
    99  					t.Errorf("unexpected object retrieval success")
   100  				}
   101  			}
   102  		}
   103  	}
   104  
   105  //暂时删除对等测试ODR失败
   106  	client.peers.Unregister(client.rPeer.id)
   107  time.Sleep(time.Millisecond * 10) //确保执行所有peersetnotify回调
   108  //预计在没有LES对等机的情况下检索失败（Genesis块除外）
   109  	test(0)
   110  
   111  	client.peers.Register(client.rPeer)
   112  time.Sleep(time.Millisecond * 10) //确保执行所有peersetnotify回调
   113  	client.rPeer.lock.Lock()
   114  	client.rPeer.hasBlock = func(common.Hash, uint64, bool) bool { return true }
   115  	client.rPeer.lock.Unlock()
   116  //希望所有检索都通过
   117  	test(5)
   118  }
   119