github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/core/state/iterator_test.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package state
    19  
    20  import (
    21  	"bytes"
    22  	"testing"
    23  
    24  	"github.com/AigarNetwork/aigar/common"
    25  	"github.com/AigarNetwork/aigar/ethdb"
    26  )
    27  
    28  // Tests that the node iterator indeed walks over the entire database contents.
    29  func TestNodeIteratorCoverage(t *testing.T) {
    30  	// Create some arbitrary test state to iterate
    31  	db, root, _ := makeTestState()
    32  
    33  	state, err := New(root, db)
    34  	if err != nil {
    35  		t.Fatalf("failed to create state trie at %x: %v", root, err)
    36  	}
    37  	// Gather all the node hashes found by the iterator
    38  	hashes := make(map[common.Hash]struct{})
    39  	for it := NewNodeIterator(state); it.Next(); {
    40  		if it.Hash != (common.Hash{}) {
    41  			hashes[it.Hash] = struct{}{}
    42  		}
    43  	}
    44  	// Cross check the iterated hashes and the database/nodepool content
    45  	for hash := range hashes {
    46  		if _, err := db.TrieDB().Node(hash); err != nil {
    47  			t.Errorf("failed to retrieve reported node %x", hash)
    48  		}
    49  	}
    50  	for _, hash := range db.TrieDB().Nodes() {
    51  		if _, ok := hashes[hash]; !ok {
    52  			t.Errorf("state entry not reported %x", hash)
    53  		}
    54  	}
    55  	it := db.TrieDB().DiskDB().(ethdb.Database).NewIterator()
    56  	for it.Next() {
    57  		key := it.Key()
    58  		if bytes.HasPrefix(key, []byte("secure-key-")) {
    59  			continue
    60  		}
    61  		if _, ok := hashes[common.BytesToHash(key)]; !ok {
    62  			t.Errorf("state entry not reported %x", key)
    63  		}
    64  	}
    65  	it.Release()
    66  }