github.com/ethereum/go-ethereum@v1.16.1/triedb/preimages_test.go (about)

     1  // Copyright 2023 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 triedb
    18  
    19  import (
    20  	"bytes"
    21  	"testing"
    22  
    23  	"github.com/ethereum/go-ethereum/common"
    24  	"github.com/ethereum/go-ethereum/core/rawdb"
    25  	"github.com/ethereum/go-ethereum/triedb/hashdb"
    26  )
    27  
    28  // TestDatabasePreimages tests the preimage functionality of the trie database.
    29  func TestDatabasePreimages(t *testing.T) {
    30  	// Create a database with preimages enabled
    31  	memDB := rawdb.NewMemoryDatabase()
    32  	config := &Config{
    33  		Preimages: true,
    34  		HashDB:    hashdb.Defaults,
    35  	}
    36  	db := NewDatabase(memDB, config)
    37  	defer db.Close()
    38  
    39  	// Test inserting and retrieving preimages
    40  	preimages := make(map[common.Hash][]byte)
    41  	for i := 0; i < 10; i++ {
    42  		data := []byte{byte(i), byte(i + 1), byte(i + 2)}
    43  		hash := common.BytesToHash(data)
    44  		preimages[hash] = data
    45  	}
    46  
    47  	// Insert preimages into the database
    48  	db.InsertPreimage(preimages)
    49  
    50  	// Verify all preimages are retrievable
    51  	for hash, data := range preimages {
    52  		retrieved := db.Preimage(hash)
    53  		if retrieved == nil {
    54  			t.Errorf("Preimage for %x not found", hash)
    55  		}
    56  		if !bytes.Equal(retrieved, data) {
    57  			t.Errorf("Preimage data mismatch: got %x want %x", retrieved, data)
    58  		}
    59  	}
    60  
    61  	// Test non-existent preimage
    62  	nonExistentHash := common.HexToHash("deadbeef")
    63  	if data := db.Preimage(nonExistentHash); data != nil {
    64  		t.Errorf("Unexpected preimage data for non-existent hash: %x", data)
    65  	}
    66  
    67  	// Force preimage commit and verify again
    68  	db.WritePreimages()
    69  	for hash, data := range preimages {
    70  		retrieved := db.Preimage(hash)
    71  		if retrieved == nil {
    72  			t.Errorf("Preimage for %x not found after forced commit", hash)
    73  		}
    74  		if !bytes.Equal(retrieved, data) {
    75  			t.Errorf("Preimage data mismatch after forced commit: got %x want %x", retrieved, data)
    76  		}
    77  	}
    78  }