github.com/sberex/go-sberex@v1.8.2-0.20181113200658-ed96ac38f7d7/core/state/iterator_test.go (about)

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