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authorFelix Lange <fjl@users.noreply.github.com>2017-06-27 21:57:06 +0800
committerGitHub <noreply@github.com>2017-06-27 21:57:06 +0800
commit9e5f03b6c487175cc5aa1224e5e12fd573f483a7 (patch)
tree475e573ff6c7e77cd069a2f6238afdb27d4bce43 /light/trie_test.go
parentbb366271fe33cf87b462dc5a25ac6c448ac6d2e1 (diff)
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core/state: access trie through Database interface, track errors (#14589)
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).
Diffstat (limited to 'light/trie_test.go')
-rw-r--r--light/trie_test.go83
1 files changed, 83 insertions, 0 deletions
diff --git a/light/trie_test.go b/light/trie_test.go
new file mode 100644
index 000000000..9b2cf7c2b
--- /dev/null
+++ b/light/trie_test.go
@@ -0,0 +1,83 @@
+// Copyright 2017 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 light
+
+import (
+ "bytes"
+ "context"
+ "fmt"
+ "testing"
+
+ "github.com/davecgh/go-spew/spew"
+ "github.com/ethereum/go-ethereum/consensus/ethash"
+ "github.com/ethereum/go-ethereum/core"
+ "github.com/ethereum/go-ethereum/core/state"
+ "github.com/ethereum/go-ethereum/core/vm"
+ "github.com/ethereum/go-ethereum/ethdb"
+ "github.com/ethereum/go-ethereum/event"
+ "github.com/ethereum/go-ethereum/params"
+ "github.com/ethereum/go-ethereum/trie"
+)
+
+func TestNodeIterator(t *testing.T) {
+ var (
+ fulldb, _ = ethdb.NewMemDatabase()
+ lightdb, _ = ethdb.NewMemDatabase()
+ gspec = core.Genesis{Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}}
+ genesis = gspec.MustCommit(fulldb)
+ )
+ gspec.MustCommit(lightdb)
+ blockchain, _ := core.NewBlockChain(fulldb, params.TestChainConfig, ethash.NewFullFaker(), new(event.TypeMux), vm.Config{})
+ gchain, _ := core.GenerateChain(params.TestChainConfig, genesis, fulldb, 4, testChainGen)
+ if _, err := blockchain.InsertChain(gchain); err != nil {
+ panic(err)
+ }
+
+ ctx := context.Background()
+ odr := &testOdr{sdb: fulldb, ldb: lightdb}
+ head := blockchain.CurrentHeader()
+ lightTrie, _ := NewStateDatabase(ctx, head, odr).OpenTrie(head.Root)
+ fullTrie, _ := state.NewDatabase(fulldb).OpenTrie(head.Root)
+ if err := diffTries(fullTrie, lightTrie); err != nil {
+ t.Fatal(err)
+ }
+}
+
+func diffTries(t1, t2 state.Trie) error {
+ i1 := trie.NewIterator(t1.NodeIterator(nil))
+ i2 := trie.NewIterator(t2.NodeIterator(nil))
+ for i1.Next() && i2.Next() {
+ if !bytes.Equal(i1.Key, i2.Key) {
+ spew.Dump(i2)
+ return fmt.Errorf("tries have different keys %x, %x", i1.Key, i2.Key)
+ }
+ if !bytes.Equal(i2.Value, i2.Value) {
+ return fmt.Errorf("tries differ at key %x", i1.Key)
+ }
+ }
+ switch {
+ case i1.Err != nil:
+ return fmt.Errorf("full trie iterator error: %v", i1.Err)
+ case i2.Err != nil:
+ return fmt.Errorf("light trie iterator error: %v", i1.Err)
+ case i1.Next():
+ return fmt.Errorf("full trie iterator has more k/v pairs")
+ case i2.Next():
+ return fmt.Errorf("light trie iterator has more k/v pairs")
+ }
+ return nil
+}