80 lines
2.8 KiB
Go
80 lines
2.8 KiB
Go
// Copyright 2015 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 eth
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import (
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"sync/atomic"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/eth/protocols/eth"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/enode"
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)
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// Tests that fast sync is disabled after a successful sync cycle.
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func TestFastSyncDisabling66(t *testing.T) { testFastSyncDisabling(t, eth.ETH66) }
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// Tests that fast sync gets disabled as soon as a real block is successfully
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// imported into the blockchain.
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func testFastSyncDisabling(t *testing.T, protocol uint) {
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t.Parallel()
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// Create an empty handler and ensure it's in fast sync mode
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empty := newTestHandler()
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if atomic.LoadUint32(&empty.handler.fastSync) == 0 {
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t.Fatalf("fast sync disabled on pristine blockchain")
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}
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defer empty.close()
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// Create a full handler and ensure fast sync ends up disabled
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full := newTestHandlerWithBlocks(1024)
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if atomic.LoadUint32(&full.handler.fastSync) == 1 {
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t.Fatalf("fast sync not disabled on non-empty blockchain")
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}
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defer full.close()
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// Sync up the two handlers
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emptyPipe, fullPipe := p2p.MsgPipe()
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defer emptyPipe.Close()
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defer fullPipe.Close()
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emptyPeer := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{1}, "", nil), emptyPipe, empty.txpool)
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fullPeer := eth.NewPeer(protocol, p2p.NewPeer(enode.ID{2}, "", nil), fullPipe, full.txpool)
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defer emptyPeer.Close()
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defer fullPeer.Close()
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go empty.handler.runEthPeer(emptyPeer, func(peer *eth.Peer) error {
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return eth.Handle((*ethHandler)(empty.handler), peer)
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})
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go full.handler.runEthPeer(fullPeer, func(peer *eth.Peer) error {
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return eth.Handle((*ethHandler)(full.handler), peer)
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})
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// Wait a bit for the above handlers to start
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time.Sleep(250 * time.Millisecond)
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// Check that fast sync was disabled
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op := peerToSyncOp(downloader.FastSync, empty.handler.peers.peerWithHighestTD())
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if err := empty.handler.doSync(op); err != nil {
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t.Fatal("sync failed:", err)
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}
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if atomic.LoadUint32(&empty.handler.fastSync) == 1 {
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t.Fatalf("fast sync not disabled after successful synchronisation")
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}
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}
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