84 lines
2.8 KiB
Go
84 lines
2.8 KiB
Go
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// Copyright 2017 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 light
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import (
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"bytes"
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"context"
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"fmt"
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"testing"
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"github.com/davecgh/go-spew/spew"
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"github.com/ethereum/go-ethereum/consensus/ethash"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/trie"
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)
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func TestNodeIterator(t *testing.T) {
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var (
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fulldb, _ = ethdb.NewMemDatabase()
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lightdb, _ = ethdb.NewMemDatabase()
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gspec = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}}
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genesis = gspec.MustCommit(fulldb)
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)
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gspec.MustCommit(lightdb)
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blockchain, _ := core.NewBlockChain(fulldb, params.TestChainConfig, ethash.NewFullFaker(), new(event.TypeMux), vm.Config{})
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gchain, _ := core.GenerateChain(params.TestChainConfig, genesis, fulldb, 4, testChainGen)
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if _, err := blockchain.InsertChain(gchain); err != nil {
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panic(err)
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}
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ctx := context.Background()
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odr := &testOdr{sdb: fulldb, ldb: lightdb}
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head := blockchain.CurrentHeader()
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lightTrie, _ := NewStateDatabase(ctx, head, odr).OpenTrie(head.Root)
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fullTrie, _ := state.NewDatabase(fulldb).OpenTrie(head.Root)
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if err := diffTries(fullTrie, lightTrie); err != nil {
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t.Fatal(err)
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}
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}
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func diffTries(t1, t2 state.Trie) error {
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i1 := trie.NewIterator(t1.NodeIterator(nil))
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i2 := trie.NewIterator(t2.NodeIterator(nil))
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for i1.Next() && i2.Next() {
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if !bytes.Equal(i1.Key, i2.Key) {
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spew.Dump(i2)
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return fmt.Errorf("tries have different keys %x, %x", i1.Key, i2.Key)
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}
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if !bytes.Equal(i2.Value, i2.Value) {
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return fmt.Errorf("tries differ at key %x", i1.Key)
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}
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}
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switch {
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case i1.Err != nil:
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return fmt.Errorf("full trie iterator error: %v", i1.Err)
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case i2.Err != nil:
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return fmt.Errorf("light trie iterator error: %v", i1.Err)
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case i1.Next():
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return fmt.Errorf("full trie iterator has more k/v pairs")
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case i2.Next():
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return fmt.Errorf("light trie iterator has more k/v pairs")
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}
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return nil
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}
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