1 files changed, 122 insertions, 0 deletions
diff --git a/lds/request_test.go b/lds/request_test.go
new file mode 100644
index 000000000..206d09f03
--- /dev/null
+++ b/lds/request_test.go
@@ -0,0 +1,122 @@
+// 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 lds
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/dexon-foundation/dexon/common"
+	"github.com/dexon-foundation/dexon/core/rawdb"
+	"github.com/dexon-foundation/dexon/crypto"
+	"github.com/dexon-foundation/dexon/ethdb"
+	"github.com/dexon-foundation/dexon/light"
+)
+
+var testBankSecureTrieKey = secAddr(testBankAddress)
+
+func secAddr(addr common.Address) []byte {
+	return crypto.Keccak256(addr[:])
+}
+
+type accessTestFn func(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest
+
+func TestBlockAccessLes1(t *testing.T) { testAccess(t, 1, tfBlockAccess) }
+
+func TestBlockAccessLes2(t *testing.T) { testAccess(t, 2, tfBlockAccess) }
+
+func tfBlockAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
+	return &light.BlockRequest{Hash: bhash, Number: number}
+}
+
+func TestReceiptsAccessLes1(t *testing.T) { testAccess(t, 1, tfReceiptsAccess) }
+
+func TestReceiptsAccessLes2(t *testing.T) { testAccess(t, 2, tfReceiptsAccess) }
+
+func tfReceiptsAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
+	return &light.ReceiptsRequest{Hash: bhash, Number: number}
+}
+
+func TestTrieEntryAccessLes1(t *testing.T) { testAccess(t, 1, tfTrieEntryAccess) }
+
+func TestTrieEntryAccessLes2(t *testing.T) { testAccess(t, 2, tfTrieEntryAccess) }
+
+func tfTrieEntryAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
+	if number := rawdb.ReadHeaderNumber(db, bhash); number != nil {
+		return &light.TrieRequest{Id: light.StateTrieID(rawdb.ReadHeader(db, bhash, *number)), Key: testBankSecureTrieKey}
+	}
+	return nil
+}
+
+func TestCodeAccessLes1(t *testing.T) { testAccess(t, 1, tfCodeAccess) }
+
+func TestCodeAccessLes2(t *testing.T) { testAccess(t, 2, tfCodeAccess) }
+
+func tfCodeAccess(db ethdb.Database, bhash common.Hash, num uint64) light.OdrRequest {
+	number := rawdb.ReadHeaderNumber(db, bhash)
+	if number != nil {
+		return nil
+	}
+	header := rawdb.ReadHeader(db, bhash, *number)
+	if header.Number.Uint64() < testContractDeployed {
+		return nil
+	}
+	sti := light.StateTrieID(header)
+	ci := light.StorageTrieID(sti, crypto.Keccak256Hash(testContractAddr[:]), common.Hash{})
+	return &light.CodeRequest{Id: ci, Hash: crypto.Keccak256Hash(testContractCodeDeployed)}
+}
+
+func testAccess(t *testing.T, protocol int, fn accessTestFn) {
+	// Assemble the test environment
+	server, client, tearDown := newClientServerEnv(t, 4, protocol, nil, true)
+	defer tearDown()
+	client.pm.synchronise(client.rPeer)
+
+	test := func(expFail uint64) {
+		for i := uint64(0); i <= server.pm.blockchain.CurrentHeader().Number.Uint64(); i++ {
+			bhash := rawdb.ReadCanonicalHash(server.db, i)
+			if req := fn(client.db, bhash, i); req != nil {
+				ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
+				defer cancel()
+				err := client.pm.odr.Retrieve(ctx, req)
+				got := err == nil
+				exp := i < expFail
+				if exp && !got {
+					t.Errorf("object retrieval failed")
+				}
+				if !exp && got {
+					t.Errorf("unexpected object retrieval success")
+				}
+			}
+		}
+	}
+
+	// temporarily remove peer to test odr fails
+	client.peers.Unregister(client.rPeer.id)
+	time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
+	// expect retrievals to fail (except genesis block) without a les peer
+	test(0)
+
+	client.peers.Register(client.rPeer)
+	time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
+	client.rPeer.lock.Lock()
+	client.rPeer.hasBlock = func(common.Hash, uint64, bool) bool { return true }
+	client.rPeer.lock.Unlock()
+	// expect all retrievals to pass
+	test(5)
+}