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201 lines
5.2 KiB
201 lines
5.2 KiB
package behaviour_test
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import (
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"sync"
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"testing"
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bh "github.com/tendermint/tendermint/behaviour"
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"github.com/tendermint/tendermint/p2p"
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)
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// TestMockReporter tests the MockReporter's ability to store reported
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// peer behaviour in memory indexed by the peerID.
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func TestMockReporter(t *testing.T) {
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var peerID p2p.ID = "MockPeer"
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pr := bh.NewMockReporter()
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behaviours := pr.GetBehaviours(peerID)
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if len(behaviours) != 0 {
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t.Error("Expected to have no behaviours reported")
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}
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badMessage := bh.BadMessage(peerID, "bad message")
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pr.Report(badMessage)
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behaviours = pr.GetBehaviours(peerID)
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if len(behaviours) != 1 {
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t.Error("Expected the peer have one reported behaviour")
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}
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if behaviours[0] != badMessage {
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t.Error("Expected Bad Message to have been reported")
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}
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}
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type scriptItem struct {
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peerID p2p.ID
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behaviour bh.PeerBehaviour
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}
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// equalBehaviours returns true if a and b contain the same PeerBehaviours with
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// the same freequencies and otherwise false.
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func equalBehaviours(a []bh.PeerBehaviour, b []bh.PeerBehaviour) bool {
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aHistogram := map[bh.PeerBehaviour]int{}
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bHistogram := map[bh.PeerBehaviour]int{}
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for _, behaviour := range a {
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aHistogram[behaviour] += 1
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}
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for _, behaviour := range b {
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bHistogram[behaviour] += 1
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}
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if len(aHistogram) != len(bHistogram) {
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return false
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}
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for _, behaviour := range a {
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if aHistogram[behaviour] != bHistogram[behaviour] {
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return false
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}
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}
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for _, behaviour := range b {
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if bHistogram[behaviour] != aHistogram[behaviour] {
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return false
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}
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}
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return true
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}
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// TestEqualPeerBehaviours tests that equalBehaviours can tell that two slices
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// of peer behaviours can be compared for the behaviours they contain and the
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// freequencies that those behaviours occur.
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func TestEqualPeerBehaviours(t *testing.T) {
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var (
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peerID p2p.ID = "MockPeer"
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consensusVote = bh.ConsensusVote(peerID, "voted")
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blockPart = bh.BlockPart(peerID, "blocked")
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equals = []struct {
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left []bh.PeerBehaviour
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right []bh.PeerBehaviour
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}{
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// Empty sets
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{[]bh.PeerBehaviour{}, []bh.PeerBehaviour{}},
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// Single behaviours
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{[]bh.PeerBehaviour{consensusVote}, []bh.PeerBehaviour{consensusVote}},
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// Equal Frequencies
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{[]bh.PeerBehaviour{consensusVote, consensusVote},
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[]bh.PeerBehaviour{consensusVote, consensusVote}},
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// Equal frequencies different orders
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{[]bh.PeerBehaviour{consensusVote, blockPart},
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[]bh.PeerBehaviour{blockPart, consensusVote}},
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}
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unequals = []struct {
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left []bh.PeerBehaviour
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right []bh.PeerBehaviour
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}{
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// Comparing empty sets to non empty sets
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{[]bh.PeerBehaviour{}, []bh.PeerBehaviour{consensusVote}},
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// Different behaviours
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{[]bh.PeerBehaviour{consensusVote}, []bh.PeerBehaviour{blockPart}},
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// Same behaviour with different frequencies
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{[]bh.PeerBehaviour{consensusVote},
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[]bh.PeerBehaviour{consensusVote, consensusVote}},
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}
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)
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for _, test := range equals {
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if !equalBehaviours(test.left, test.right) {
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t.Errorf("expected %#v and %#v to be equal", test.left, test.right)
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}
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}
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for _, test := range unequals {
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if equalBehaviours(test.left, test.right) {
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t.Errorf("expected %#v and %#v to be unequal", test.left, test.right)
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}
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}
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}
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// TestPeerBehaviourConcurrency constructs a scenario in which
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// multiple goroutines are using the same MockReporter instance.
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// This test reproduces the conditions in which MockReporter will
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// be used within a Reactor `Receive` method tests to ensure thread safety.
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func TestMockPeerBehaviourReporterConcurrency(t *testing.T) {
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var (
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behaviourScript = []struct {
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peerID p2p.ID
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behaviours []bh.PeerBehaviour
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}{
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{"1", []bh.PeerBehaviour{bh.ConsensusVote("1", "")}},
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{"2", []bh.PeerBehaviour{bh.ConsensusVote("2", ""), bh.ConsensusVote("2", ""), bh.ConsensusVote("2", "")}},
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{
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"3",
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[]bh.PeerBehaviour{bh.BlockPart("3", ""),
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bh.ConsensusVote("3", ""),
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bh.BlockPart("3", ""),
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bh.ConsensusVote("3", "")}},
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{
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"4",
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[]bh.PeerBehaviour{bh.ConsensusVote("4", ""),
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bh.ConsensusVote("4", ""),
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bh.ConsensusVote("4", ""),
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bh.ConsensusVote("4", "")}},
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{
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"5",
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[]bh.PeerBehaviour{bh.BlockPart("5", ""),
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bh.ConsensusVote("5", ""),
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bh.BlockPart("5", ""),
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bh.ConsensusVote("5", "")}},
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}
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)
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var receiveWg sync.WaitGroup
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pr := bh.NewMockReporter()
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scriptItems := make(chan scriptItem)
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done := make(chan int)
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numConsumers := 3
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for i := 0; i < numConsumers; i++ {
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receiveWg.Add(1)
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go func() {
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defer receiveWg.Done()
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for {
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select {
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case pb := <-scriptItems:
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pr.Report(pb.behaviour)
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case <-done:
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return
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}
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}
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}()
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}
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var sendingWg sync.WaitGroup
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sendingWg.Add(1)
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go func() {
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defer sendingWg.Done()
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for _, item := range behaviourScript {
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for _, reason := range item.behaviours {
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scriptItems <- scriptItem{item.peerID, reason}
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}
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}
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}()
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sendingWg.Wait()
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for i := 0; i < numConsumers; i++ {
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done <- 1
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}
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receiveWg.Wait()
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for _, items := range behaviourScript {
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reported := pr.GetBehaviours(items.peerID)
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if !equalBehaviours(reported, items.behaviours) {
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t.Errorf("expected peer %s to have behaved \nExpected: %#v \nGot %#v \n",
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items.peerID, items.behaviours, reported)
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}
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}
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}
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