prysm-pulse/core/state/iterator_test.go
Preston Van Loon 84ff4c5b14 Merge pull request #23 from ethereum/master
Upstream changes from ethereum/go-ethereum

Former-commit-id: b40212f60d4e0a11e783a362886c7db8fb9c54f9 [formerly a2112a830d4047afa18c31243c2a506f80d4de12]
Former-commit-id: 4c9a4d5662038dd26bda5d3343f231795c702b02
2018-02-07 10:27:01 -05:00

63 lines
2.0 KiB
Go

// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package state
import (
"bytes"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethdb"
)
// Tests that the node iterator indeed walks over the entire database contents.
func TestNodeIteratorCoverage(t *testing.T) {
// Create some arbitrary test state to iterate
db, root, _ := makeTestState()
state, err := New(root, db)
if err != nil {
t.Fatalf("failed to create state trie at %x: %v", root, err)
}
// Gather all the node hashes found by the iterator
hashes := make(map[common.Hash]struct{})
for it := NewNodeIterator(state); it.Next(); {
if it.Hash != (common.Hash{}) {
hashes[it.Hash] = struct{}{}
}
}
// Cross check the iterated hashes and the database/nodepool content
for hash := range hashes {
if _, err := db.TrieDB().Node(hash); err != nil {
t.Errorf("failed to retrieve reported node %x", hash)
}
}
for _, hash := range db.TrieDB().Nodes() {
if _, ok := hashes[hash]; !ok {
t.Errorf("state entry not reported %x", hash)
}
}
for _, key := range db.TrieDB().DiskDB().(*ethdb.MemDatabase).Keys() {
if bytes.HasPrefix(key, []byte("secure-key-")) {
continue
}
if _, ok := hashes[common.BytesToHash(key)]; !ok {
t.Errorf("state entry not reported %x", key)
}
}
}