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84ff4c5b14
Upstream changes from ethereum/go-ethereum Former-commit-id: b40212f60d4e0a11e783a362886c7db8fb9c54f9 [formerly a2112a830d4047afa18c31243c2a506f80d4de12] Former-commit-id: 4c9a4d5662038dd26bda5d3343f231795c702b02
63 lines
2.0 KiB
Go
63 lines
2.0 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package state
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import (
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"bytes"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/ethdb"
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)
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// Tests that the node iterator indeed walks over the entire database contents.
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func TestNodeIteratorCoverage(t *testing.T) {
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// Create some arbitrary test state to iterate
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db, root, _ := makeTestState()
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state, err := New(root, db)
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if err != nil {
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t.Fatalf("failed to create state trie at %x: %v", root, err)
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}
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// Gather all the node hashes found by the iterator
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hashes := make(map[common.Hash]struct{})
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for it := NewNodeIterator(state); it.Next(); {
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if it.Hash != (common.Hash{}) {
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hashes[it.Hash] = struct{}{}
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}
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}
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// Cross check the iterated hashes and the database/nodepool content
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for hash := range hashes {
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if _, err := db.TrieDB().Node(hash); err != nil {
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t.Errorf("failed to retrieve reported node %x", hash)
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}
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}
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for _, hash := range db.TrieDB().Nodes() {
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if _, ok := hashes[hash]; !ok {
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t.Errorf("state entry not reported %x", hash)
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}
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}
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for _, key := range db.TrieDB().DiskDB().(*ethdb.MemDatabase).Keys() {
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if bytes.HasPrefix(key, []byte("secure-key-")) {
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continue
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}
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if _, ok := hashes[common.BytesToHash(key)]; !ok {
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t.Errorf("state entry not reported %x", key)
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}
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}
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}
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