fix: add delays for gossipsub (#202)

GossipSub needs the heartbeat to run before the mesh overlay is built - we need to wait for this to happen otherwise messages don't get gossiped onwards to peers.

packages/libp2p-interface-compliance-tests/src/pubsub/multiple-nodes.ts

@@ -12,6 +12,7 @@ import type { Message, PubSub } from '@libp2p/interfaces/pubsub'
 import type { PubSubArgs } from './index.js'
 import type { Components } from '@libp2p/interfaces/components'
 import { start, stop } from '../index.js'
+import delay from 'delay'
 
 export default (common: TestSetup<PubSub, PubSubArgs>) => {
   describe('pubsub with multiple nodes', function () {
@@ -137,18 +138,21 @@ export default (common: TestSetup<PubSub, PubSubArgs>) => {
           psB.subscribe(topic)
           psC.subscribe(topic)
 
-          let counter = 0
-
-          psA.addEventListener('message', incMsg)
-          psB.addEventListener('message', incMsg)
-          psC.addEventListener('message', incMsg)
-
           await Promise.all([
             waitForSubscriptionUpdate(psA, componentsB.getPeerId()),
             waitForSubscriptionUpdate(psB, componentsA.getPeerId()),
             waitForSubscriptionUpdate(psC, componentsB.getPeerId())
           ])
 
+          // GossipSub needs time to build the mesh overlay
+          await delay(1000)
+
+          let counter = 0
+
+          psA.addEventListener('message', incMsg)
+          psB.addEventListener('message', incMsg)
+          psC.addEventListener('message', incMsg)
+
           const result = await psA.publish(topic, uint8ArrayFromString('hey'))
 
           expect(result).to.have.property('recipients').with.property('length').greaterThanOrEqual(1)
@@ -190,10 +194,6 @@ export default (common: TestSetup<PubSub, PubSubArgs>) => {
             const defer = pDefer()
             let counter = 0
 
-            psA.addEventListener('message', incMsg)
-            psB.addEventListener('message', incMsg)
-            psC.addEventListener('message', incMsg)
-
             psA.subscribe(topic)
             psB.subscribe(topic)
             psC.subscribe(topic)
@@ -204,6 +204,13 @@ export default (common: TestSetup<PubSub, PubSubArgs>) => {
               waitForSubscriptionUpdate(psC, componentsB.getPeerId())
             ])
 
+            // GossipSub needs time to build the mesh overlay
+            await delay(1000)
+
+            psA.addEventListener('message', incMsg)
+            psB.addEventListener('message', incMsg)
+            psC.addEventListener('message', incMsg)
+
             await psB.publish(topic, uint8ArrayFromString('hey'))
 
             function incMsg (evt: CustomEvent<Message>) {
@@ -352,6 +359,9 @@ export default (common: TestSetup<PubSub, PubSubArgs>) => {
             waitForSubscriptionUpdate(psE, componentsD.getPeerId())
           ])
 
+          // GossipSub needs time to build the mesh overlay
+          await delay(1000)
+
           await psC.publish('Z', uint8ArrayFromString('hey from c'))
 
           function incMsg (evt: CustomEvent<Message>) {