9e5f03b6c4
With this commit, core/state's access to the underlying key/value database is mediated through an interface. Database errors are tracked in StateDB and returned by CommitTo or the new Error method. Motivation for this change: We can remove the light client's duplicated copy of core/state. The light client now supports node iteration, so tracing and storage enumeration can work with the light client (not implemented in this commit).
58 lines
1.8 KiB
Go
58 lines
1.8 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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)
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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, mem, 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 hashes and the database itself
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for hash := range hashes {
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if _, err := mem.Get(hash.Bytes()); err != nil {
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t.Errorf("failed to retrieve reported node %x: %v", hash, err)
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}
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}
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for _, key := range mem.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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