package blockpool
import (
"testing"
"time"
)
// using the mock framework in blockpool_util_test
// we test various scenarios here
func TestPeerWithKnownBlock(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.refBlockChain[0] = nil
blockPoolTester.blockChain[0] = nil
blockPool.Start()
peer0 := blockPoolTester.newPeer("0", 1, 0)
peer0.AddPeer()
blockPool.Wait(waitTimeout)
blockPool.Stop()
// no request on known block
peer0.checkBlockHashesRequests()
}
func TestPeerWithKnownParentBlock(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.initRefBlockChain(1)
blockPoolTester.blockChain[0] = nil
blockPool.Start()
peer0 := blockPoolTester.newPeer("0", 1, 1)
peer0.AddPeer()
peer0.serveBlocks(0, 1)
blockPool.Wait(waitTimeout)
blockPool.Stop()
peer0.checkBlocksRequests([]int{1})
peer0.checkBlockHashesRequests()
blockPoolTester.refBlockChain[1] = []int{}
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestSimpleChain(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(2)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 2, 2)
peer1.AddPeer()
peer1.serveBlocks(1, 2)
go peer1.serveBlockHashes(2, 1, 0)
peer1.serveBlocks(0, 1)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[2] = []int{}
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestChainConnectingWithParentHash(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(3)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 3, 3)
peer1.AddPeer()
go peer1.serveBlocks(2, 3)
go peer1.serveBlockHashes(3, 2, 1)
peer1.serveBlocks(0, 1, 2)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[3] = []int{}
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestMultiSectionChain(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(5)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 5, 5)
peer1.AddPeer()
go peer1.serveBlocks(4, 5)
go peer1.serveBlockHashes(5, 4, 3)
go peer1.serveBlocks(2, 3, 4)
go peer1.serveBlockHashes(3, 2, 1, 0)
peer1.serveBlocks(0, 1, 2)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[5] = []int{}
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestNewBlocksOnPartialChain(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(7)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 5, 5)
blockPoolTester.tds = make(map[int]int)
blockPoolTester.tds[5] = 5
peer1.AddPeer()
go peer1.serveBlocks(4, 5) // partially complete section
go peer1.serveBlockHashes(5, 4, 3)
peer1.serveBlocks(3, 4) // partially complete section
// peer1 found new blocks
peer1.td = 7
peer1.currentBlock = 7
peer1.AddPeer()
peer1.sendBlocks(6, 7)
go peer1.serveBlockHashes(7, 6, 5)
go peer1.serveBlocks(2, 3)
go peer1.serveBlocks(5, 6)
go peer1.serveBlockHashes(3, 2, 1) // tests that hash request from known chain root is remembered
peer1.serveBlocks(0, 1, 2)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[7] = []int{}
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestPeerSwitchUp(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(7)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 6, 6)
peer2 := blockPoolTester.newPeer("peer2", 7, 7)
peer1.AddPeer()
go peer1.serveBlocks(5, 6)
go peer1.serveBlockHashes(6, 5, 4, 3) //
peer1.serveBlocks(2, 3) // section partially complete, block 3 will be preserved after peer demoted
peer2.AddPeer() // peer2 is promoted as best peer, peer1 is demoted
go peer2.serveBlocks(6, 7) //
go peer2.serveBlocks(4, 5) // tests that block request for earlier section is remembered
go peer1.serveBlocks(3, 4) // tests that connecting section by demoted peer is remembered and blocks are accepted from demoted peer
go peer2.serveBlockHashes(3, 2, 1, 0) // tests that known chain section is activated, hash requests from 3 is remembered
peer2.serveBlocks(0, 1, 2) // final blocks linking to blockchain sent
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[7] = []int{}
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestPeerSwitchDownOverlapSectionWithoutRootBlock(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(6)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 4, 4)
peer2 := blockPoolTester.newPeer("peer2", 6, 6)
peer2.AddPeer()
peer2.serveBlocks(5, 6) // partially complete, section will be preserved
peer2.serveBlockHashes(6, 5, 4) // no go: make sure skeleton is created
peer1.AddPeer() // inferior peer1 is promoted as best peer
blockPool.RemovePeer("peer2") // peer2 disconnects
go peer1.serveBlockHashes(4, 3, 2, 1, 0) //
go peer1.serveBlocks(3, 4) //
go peer1.serveBlocks(4, 5) // tests that section set by demoted peer is remembered and blocks are accepted from new peer if they have it even if peers original TD is lower
peer1.serveBlocks(0, 1, 2, 3)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[6] = []int{} // tests that idle sections are not inserted in blockchain
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestPeerSwitchDownOverlapSectionWithRootBlock(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(6)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 4, 4)
peer2 := blockPoolTester.newPeer("peer2", 6, 6)
peer2.AddPeer()
peer2.serveBlocks(5, 6) // partially complete, section will be preserved
go peer2.serveBlockHashes(6, 5, 4) //
peer2.serveBlocks(3, 4) // !incomplete section
time.Sleep(100 * time.Millisecond) // make sure block 4 added
peer1.AddPeer() // inferior peer1 is promoted as best peer
blockPool.RemovePeer("peer2") // peer2 disconnects
go peer1.serveBlockHashes(4, 3, 2, 1, 0) // tests that hash request are directly connecting if the head block exists
go peer1.serveBlocks(4, 5) // tests that section set by demoted peer is remembered and blocks are accepted from new peer if they have it even if peers original TD is lower
peer1.serveBlocks(0, 1, 2, 3)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[6] = []int{} // tests that idle sections are not inserted in blockchain
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestPeerSwitchDownDisjointSection(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(3)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 3, 3)
peer2 := blockPoolTester.newPeer("peer2", 6, 6)
peer2.AddPeer()
peer2.serveBlocks(5, 6) // partially complete, section will be preserved
go peer2.serveBlockHashes(6, 5, 4) //
peer2.serveBlocks(3, 4, 5) //
time.Sleep(100 * time.Millisecond) // make sure blocks are received
peer1.AddPeer() // inferior peer1 is promoted as best peer
blockPool.RemovePeer("peer2") // peer2 disconnects
go peer1.serveBlocks(2, 3) //
go peer1.serveBlockHashes(3, 2, 1) //
peer1.serveBlocks(0, 1, 2) //
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[3] = []int{} // tests that idle sections are not inserted in blockchain
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestPeerSwitchBack(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(8)
blockPool.Start()
peer1 := blockPoolTester.newPeer("peer1", 11, 11)
peer2 := blockPoolTester.newPeer("peer2", 8, 8)
peer2.AddPeer()
go peer2.serveBlocks(7, 8)
go peer2.serveBlockHashes(8, 7, 6)
go peer2.serveBlockHashes(6, 5, 4)
peer2.serveBlocks(4, 5) // section partially complete
peer1.AddPeer() // peer1 is promoted as best peer
peer1.serveBlocks(10, 11) //
peer1.serveBlockHashes(11, 10) // only gives useless results
blockPool.RemovePeer("peer1") // peer1 disconnects
go peer2.serveBlockHashes(4, 3, 2, 1, 0) // tests that asking for hashes from 4 is remembered
go peer2.serveBlocks(3, 4, 5, 6, 7, 8) // tests that section 4, 5, 6 and 7, 8 are remembered for missing blocks
peer2.serveBlocks(0, 1, 2, 3)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[8] = []int{}
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestForkSimple(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(9)
blockPoolTester.refBlockChain[3] = []int{4, 7}
delete(blockPoolTester.refBlockChain, 6)
blockPool.Start()
blockPoolTester.tds = make(map[int]int)
blockPoolTester.tds[6] = 10
peer1 := blockPoolTester.newPeer("peer1", 9, 9)
peer2 := blockPoolTester.newPeer("peer2", 10, 6)
peer1.AddPeer()
go peer1.serveBlocks(8, 9)
go peer1.serveBlockHashes(9, 8, 7, 3, 2)
peer1.serveBlocks(1, 2, 3, 7, 8)
peer2.AddPeer() // peer2 is promoted as best peer
go peer2.serveBlocks(5, 6) //
go peer2.serveBlockHashes(6, 5, 4, 3, 2) // fork on 3 -> 4 (earlier child: 7)
go peer2.serveBlocks(1, 2, 3, 4, 5)
go peer2.serveBlockHashes(2, 1, 0)
peer2.serveBlocks(0, 1, 2)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[6] = []int{}
blockPoolTester.refBlockChain[3] = []int{4}
delete(blockPoolTester.refBlockChain, 7)
delete(blockPoolTester.refBlockChain, 8)
delete(blockPoolTester.refBlockChain, 9)
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestForkSwitchBackByNewBlocks(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(11)
blockPoolTester.refBlockChain[3] = []int{4, 7}
delete(blockPoolTester.refBlockChain, 6)
blockPool.Start()
blockPoolTester.tds = make(map[int]int)
blockPoolTester.tds[6] = 10
peer1 := blockPoolTester.newPeer("peer1", 9, 9)
peer2 := blockPoolTester.newPeer("peer2", 10, 6)
peer1.AddPeer()
go peer1.serveBlocks(8, 9) //
go peer1.serveBlockHashes(9, 8, 7, 3, 2) //
peer1.serveBlocks(7, 8) // partial section
// time.Sleep(1 * time.Second)
peer2.AddPeer() //
go peer2.serveBlocks(5, 6) //
go peer2.serveBlockHashes(6, 5, 4, 3, 2) // peer2 forks on block 3
peer2.serveBlocks(1, 2, 3, 4, 5) //
// peer1 finds new blocks
peer1.td = 11
peer1.currentBlock = 11
peer1.AddPeer()
go peer1.serveBlocks(10, 11)
go peer1.serveBlockHashes(11, 10, 9)
go peer1.serveBlocks(9, 10)
// time.Sleep(1 * time.Second)
go peer1.serveBlocks(3, 7) // tests that block requests on earlier fork are remembered
go peer1.serveBlockHashes(2, 1, 0) // tests that hash request from root of connecting chain section (added by demoted peer) is remembered
peer1.serveBlocks(0, 1)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[11] = []int{}
blockPoolTester.refBlockChain[3] = []int{7}
delete(blockPoolTester.refBlockChain, 6)
delete(blockPoolTester.refBlockChain, 5)
delete(blockPoolTester.refBlockChain, 4)
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestForkSwitchBackByPeerSwitchBack(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(9)
blockPoolTester.refBlockChain[3] = []int{4, 7}
delete(blockPoolTester.refBlockChain, 6)
blockPool.Start()
blockPoolTester.tds = make(map[int]int)
blockPoolTester.tds[6] = 10
blockPoolTester.tds = make(map[int]int)
blockPoolTester.tds[6] = 10
peer1 := blockPoolTester.newPeer("peer1", 9, 9)
peer2 := blockPoolTester.newPeer("peer2", 10, 6)
peer1.AddPeer()
go peer1.serveBlocks(8, 9)
go peer1.serveBlockHashes(9, 8, 7, 3, 2)
peer1.serveBlocks(7, 8)
peer2.AddPeer()
go peer2.serveBlocks(5, 6) //
go peer2.serveBlockHashes(6, 5, 4, 3, 2) // peer2 forks on block 3
peer2.serveBlocks(2, 3, 4, 5) //
blockPool.RemovePeer("peer2") // peer2 disconnects, peer1 is promoted again as best peer
go peer1.serveBlocks(1, 2) //
go peer1.serveBlockHashes(2, 1, 0) //
go peer1.serveBlocks(3, 7) // tests that block requests on earlier fork are remembered and orphan section relinks to existing parent block
peer1.serveBlocks(0, 1)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[9] = []int{}
blockPoolTester.refBlockChain[3] = []int{7}
delete(blockPoolTester.refBlockChain, 6)
delete(blockPoolTester.refBlockChain, 5)
delete(blockPoolTester.refBlockChain, 4)
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
func TestForkCompleteSectionSwitchBackByPeerSwitchBack(t *testing.T) {
_, blockPool, blockPoolTester := newTestBlockPool(t)
blockPoolTester.blockChain[0] = nil
blockPoolTester.initRefBlockChain(9)
blockPoolTester.refBlockChain[3] = []int{4, 7}
delete(blockPoolTester.refBlockChain, 6)
blockPool.Start()
blockPoolTester.tds = make(map[int]int)
blockPoolTester.tds[6] = 10
peer1 := blockPoolTester.newPeer("peer1", 9, 9)
peer2 := blockPoolTester.newPeer("peer2", 10, 6)
peer1.AddPeer()
go peer1.serveBlocks(8, 9)
go peer1.serveBlockHashes(9, 8, 7)
peer1.serveBlocks(3, 7, 8) // make sure this section is complete
// time.Sleep(2 * time.Second) //
peer1.serveBlockHashes(7, 3, 2) // block 3/7 is section boundary
peer1.serveBlocks(2, 3) // partially complete sections block 2 missing
peer2.AddPeer() //
go peer2.serveBlocks(5, 6) //
go peer2.serveBlockHashes(6, 5, 4, 3, 2) // peer2 forks on block 3
time.Sleep(100 * time.Millisecond) //
peer2.serveBlocks(2, 3, 4, 5) // block 2 still missing.
blockPool.RemovePeer("peer2") // peer2 disconnects, peer1 is promoted again as best peer
go peer1.serveBlockHashes(2, 1) //
peer1.serveBlocks(0, 1, 2)
blockPool.Wait(waitTimeout)
blockPool.Stop()
blockPoolTester.refBlockChain[9] = []int{}
blockPoolTester.refBlockChain[3] = []int{7}
delete(blockPoolTester.refBlockChain, 6)
delete(blockPoolTester.refBlockChain, 5)
delete(blockPoolTester.refBlockChain, 4)
blockPoolTester.checkBlockChain(blockPoolTester.refBlockChain)
}
