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test-monitor.ts
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test-monitor.ts
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/* eslint-disable max-nested-callbacks */
import { EventEmitter } from '@libp2p/interfaces/events'
import { stop } from '@libp2p/interfaces/startable'
import { assert } from 'aegir/chai'
import { getTestPaths, tempPath } from './utils/constants.js'
import { getMultiaddr, getTestIpfs, localIpfsOptions } from './utils/ipfs.js'
import type { GossipHelia, GossipLibp2p } from '@/interface'
import type { PeerId } from '@libp2p/interface/peer-id'
import type { Multiaddr } from '@multiformats/multiaddr'
import { Monitor } from '@/pubsub/monitor.js'
import { peerIdString } from '@/utils/index.js'
const testName = 'pubsub/monitor'
describe(testName, () => {
let ipfs1: GossipHelia,
ipfs2: GossipHelia,
libp2p1: GossipLibp2p,
libp2p2: GossipLibp2p,
id1: PeerId,
id2: PeerId,
addr2: Multiaddr
const sharedTopic = 'shared-topic'
before(async () => {
const testPaths1 = getTestPaths(tempPath, testName + '/1')
const testPaths2 = getTestPaths(tempPath, testName + '/2')
ipfs1 = await getTestIpfs(testPaths1, localIpfsOptions)
ipfs2 = await getTestIpfs(testPaths2, localIpfsOptions)
libp2p1 = ipfs1.libp2p
libp2p2 = ipfs2.libp2p
id1 = libp2p1.peerId
id2 = libp2p2.peerId
addr2 = await getMultiaddr(ipfs2)
await libp2p1.dial(addr2)
})
after(async () => {
await stop(ipfs1)
await stop(ipfs2)
})
describe('instance', () => {
it('exposes instance properties', () => {
const topic = 'topic'
const monitor = new Monitor(libp2p1, topic)
assert.strictEqual(monitor.libp2p, libp2p1)
assert.strictEqual(monitor.topic, topic)
assert.deepEqual(monitor.peers, new Set())
assert.isOk(monitor instanceof Monitor)
assert.isOk(monitor instanceof EventEmitter)
})
describe('events', () => {
let peer1: Monitor, peer2: Monitor
let joins1 = 0
let joins2 = 0
let leaves1 = 0
let leaves2 = 0
let updates1 = 0
let updates2 = 0
before(() => {
peer1 = new Monitor(libp2p1, sharedTopic)
peer2 = new Monitor(libp2p2, sharedTopic)
peer1.addEventListener('peer-join', () => joins1++)
peer2.addEventListener('peer-join', () => joins2++)
peer1.addEventListener('peer-leave', () => leaves1++)
peer2.addEventListener('peer-leave', () => leaves2++)
peer1.addEventListener('update', () => updates1++)
peer2.addEventListener('update', () => updates2++)
})
it('emits peer-join when a peer joins', async () => {
peer1.start()
peer2.start()
const promise = Promise.all([
new Promise((resolve) => { peer1.addEventListener('peer-join', resolve, { once: true }) }
),
new Promise((resolve) => { peer2.addEventListener('peer-join', resolve, { once: true }) }
)
])
assert.deepEqual(peer1.peers, new Set())
assert.deepEqual(peer2.peers, new Set())
await promise
assert.strictEqual(peer1.peers.has(peerIdString(id2)), true)
assert.strictEqual(peer2.peers.has(peerIdString(id1)), true)
assert.strictEqual(joins1, 1)
assert.strictEqual(joins2, 1)
assert.strictEqual(updates1, 1)
assert.strictEqual(updates2, 1)
})
it('emits peer-leave when a peer leaves', async () => {
peer2.stop()
await new Promise((resolve) => { peer1.addEventListener('peer-leave', resolve, { once: true }) }
)
assert.strictEqual(leaves1, 1)
assert.strictEqual(leaves2, 0)
assert.strictEqual(updates1, 2)
assert.strictEqual(updates2, 1)
peer2.start()
assert.deepEqual(peer2.peers, new Set([peerIdString(id1)]))
await new Promise((resolve) => { peer1.addEventListener('peer-join', resolve, { once: true }) }
)
assert.strictEqual(joins1, 2)
assert.strictEqual(joins2, 1)
assert.strictEqual(updates1, 3)
assert.strictEqual(updates2, 1)
peer1.stop()
await new Promise((resolve) => { peer2.addEventListener('peer-leave', resolve, { once: true }) }
)
assert.strictEqual(leaves1, 1)
assert.strictEqual(leaves2, 1)
assert.strictEqual(updates1, 3)
assert.strictEqual(updates2, 2)
peer2.stop()
})
})
})
})