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133 lines
2.7 KiB
133 lines
2.7 KiB
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package blockchain
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import (
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"math/rand"
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"testing"
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"time"
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. "github.com/tendermint/go-common"
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"github.com/tendermint/tendermint/types"
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)
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type testPeer struct {
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id string
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height int
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}
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func makePeers(numPeers int, minHeight, maxHeight int) map[string]testPeer {
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peers := make(map[string]testPeer, numPeers)
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for i := 0; i < numPeers; i++ {
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peerID := RandStr(12)
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height := minHeight + rand.Intn(maxHeight-minHeight)
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peers[peerID] = testPeer{peerID, height}
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}
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return peers
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}
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func TestBasic(t *testing.T) {
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start := 42
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peers := makePeers(10, start+1, 1000)
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timeoutsCh := make(chan string, 100)
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requestsCh := make(chan BlockRequest, 100)
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pool := NewBlockPool(start, requestsCh, timeoutsCh)
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pool.Start()
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// Introduce each peer.
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go func() {
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for _, peer := range peers {
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pool.SetPeerHeight(peer.id, peer.height)
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}
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}()
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// Start a goroutine to pull blocks
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go func() {
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for {
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if !pool.IsRunning() {
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return
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}
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first, second := pool.PeekTwoBlocks()
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if first != nil && second != nil {
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pool.PopRequest()
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} else {
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time.Sleep(1 * time.Second)
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}
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}
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}()
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// Pull from channels
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for {
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select {
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case peerID := <-timeoutsCh:
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t.Errorf("timeout: %v", peerID)
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case request := <-requestsCh:
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log.Info("TEST: Pulled new BlockRequest", "request", request)
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if request.Height == 300 {
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return // Done!
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}
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// Request desired, pretend like we got the block immediately.
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go func() {
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block := &types.Block{Header: &types.Header{Height: request.Height}}
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pool.AddBlock(request.PeerID, block, 123)
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log.Info("TEST: Added block", "block", request.Height, "peer", request.PeerID)
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}()
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}
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}
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pool.Stop()
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}
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func TestTimeout(t *testing.T) {
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start := 42
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peers := makePeers(10, start+1, 1000)
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timeoutsCh := make(chan string, 100)
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requestsCh := make(chan BlockRequest, 100)
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pool := NewBlockPool(start, requestsCh, timeoutsCh)
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pool.Start()
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for _, peer := range peers {
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log.Info("Peer", "id", peer.id)
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}
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// Introduce each peer.
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go func() {
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for _, peer := range peers {
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pool.SetPeerHeight(peer.id, peer.height)
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}
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}()
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// Start a goroutine to pull blocks
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go func() {
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for {
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if !pool.IsRunning() {
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return
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}
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first, second := pool.PeekTwoBlocks()
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if first != nil && second != nil {
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pool.PopRequest()
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} else {
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time.Sleep(1 * time.Second)
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}
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}
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}()
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// Pull from channels
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counter := 0
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timedOut := map[string]struct{}{}
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for {
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select {
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case peerID := <-timeoutsCh:
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log.Info("Timeout", "peerID", peerID)
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if _, ok := timedOut[peerID]; !ok {
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counter++
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if counter == len(peers) {
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return // Done!
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}
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}
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case request := <-requestsCh:
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log.Info("TEST: Pulled new BlockRequest", "request", request)
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}
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}
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pool.Stop()
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}
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