github.com/tdcblockchain/tdcblockchain@v0.0.0-20191111034745-805c65ade158/les/request_test.go (about)

     1  // Copyright 2016 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 les
    18  
    19  import (
    20  	"context"
    21  	"testing"
    22  	"time"
    23  
    24  	"github.com/ethereum/go-ethereum/common"
    25  	"github.com/ethereum/go-ethereum/core/rawdb"
    26  	"github.com/ethereum/go-ethereum/crypto"
    27  	"github.com/ethereum/go-ethereum/ethdb"
    28  	"github.com/ethereum/go-ethereum/light"
    29  )
    30  
    31  var testBankSecureTrieKey = secAddr(bankAddr)
    32  
    33  func secAddr(addr common.Address) []byte {
    34  	return crypto.Keccak256(addr[:])
    35  }
    36  
    37  type accessTestFn func(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest
    38  
    39  func TestBlockAccessLes2(t *testing.T) { testAccess(t, 2, tfBlockAccess) }
    40  func TestBlockAccessLes3(t *testing.T) { testAccess(t, 3, tfBlockAccess) }
    41  
    42  func tfBlockAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    43  	return &light.BlockRequest{Hash: bhash, Number: number}
    44  }
    45  
    46  func TestReceiptsAccessLes2(t *testing.T) { testAccess(t, 2, tfReceiptsAccess) }
    47  func TestReceiptsAccessLes3(t *testing.T) { testAccess(t, 3, tfReceiptsAccess) }
    48  
    49  func tfReceiptsAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    50  	return &light.ReceiptsRequest{Hash: bhash, Number: number}
    51  }
    52  
    53  func TestTrieEntryAccessLes2(t *testing.T) { testAccess(t, 2, tfTrieEntryAccess) }
    54  func TestTrieEntryAccessLes3(t *testing.T) { testAccess(t, 3, tfTrieEntryAccess) }
    55  
    56  func tfTrieEntryAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    57  	if number := rawdb.ReadHeaderNumber(db, bhash); number != nil {
    58  		return &light.TrieRequest{Id: light.StateTrieID(rawdb.ReadHeader(db, bhash, *number)), Key: testBankSecureTrieKey}
    59  	}
    60  	return nil
    61  }
    62  
    63  func TestCodeAccessLes2(t *testing.T) { testAccess(t, 2, tfCodeAccess) }
    64  func TestCodeAccessLes3(t *testing.T) { testAccess(t, 3, 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  	// Assemble the test environment
    82  	server, client, tearDown := newClientServerEnv(t, 4, protocol, nil, nil, 0, false, true)
    83  	defer tearDown()
    84  	client.handler.synchronise(client.peer.peer)
    85  
    86  	test := func(expFail uint64) {
    87  		for i := uint64(0); i <= server.handler.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  				err := client.handler.backend.odr.Retrieve(ctx, req)
    92  				cancel()
    93  
    94  				got := err == nil
    95  				exp := i < expFail
    96  				if exp && !got {
    97  					t.Errorf("object retrieval failed")
    98  				}
    99  				if !exp && got {
   100  					t.Errorf("unexpected object retrieval success")
   101  				}
   102  			}
   103  		}
   104  	}
   105  	test(5)
   106  }