feat: Bring libp2p-websocket-star to the Transports family! 🌟 (#122)

* test: add libp2p-websocket-star tests

* refactor: websocket-star-{signal => rendezvous}

* misc: Apply requested changes

* chore: update deps

* refactor: considerable amount of refactor, clean up test structure

* use right flag

* test: refactor transport tests

test/content-routing.node.js

@@ -0,0 +1,91 @@
+/* eslint-env mocha */
+/* eslint max-nested-callbacks: ["error", 8] */
+
+'use strict'
+
+const chai = require('chai')
+chai.use(require('dirty-chai'))
+const expect = chai.expect
+const parallel = require('async/parallel')
+const _times = require('lodash.times')
+const CID = require('cids')
+const utils = require('./utils/node')
+const createNode = utils.createNode
+
+describe('.contentRouting', () => {
+  let nodeA
+  let nodeB
+  let nodeC
+  let nodeD
+  let nodeE
+
+  before(function (done) {
+    this.timeout(5 * 1000)
+    const tasks = _times(5, () => (cb) => {
+      createNode('/ip4/0.0.0.0/tcp/0', {
+        mdns: false,
+        dht: true
+      }, (err, node) => {
+        expect(err).to.not.exist()
+        node.start((err) => cb(err, node))
+      })
+    })
+
+    parallel(tasks, (err, nodes) => {
+      expect(err).to.not.exist()
+      nodeA = nodes[0]
+      nodeB = nodes[1]
+      nodeC = nodes[2]
+      nodeD = nodes[3]
+      nodeE = nodes[4]
+
+      parallel([
+        (cb) => nodeA.dial(nodeB.peerInfo, cb),
+        (cb) => nodeB.dial(nodeC.peerInfo, cb),
+        (cb) => nodeC.dial(nodeD.peerInfo, cb),
+        (cb) => nodeD.dial(nodeE.peerInfo, cb),
+        (cb) => nodeE.dial(nodeA.peerInfo, cb)
+      ], done)
+    })
+  })
+
+  after((done) => {
+    parallel([
+      (cb) => nodeA.stop(cb),
+      (cb) => nodeB.stop(cb),
+      (cb) => nodeC.stop(cb),
+      (cb) => nodeD.stop(cb),
+      (cb) => nodeE.stop(cb)
+    ], done)
+  })
+
+  describe('le ring', () => {
+    const cid = new CID('QmTp9VkYvnHyrqKQuFPiuZkiX9gPcqj6x5LJ1rmWuSySnL')
+
+    it('let kbucket get filled', (done) => {
+      setTimeout(() => done(), 250)
+    })
+
+    it('nodeA.contentRouting.provide', (done) => {
+      nodeA.contentRouting.provide(cid, done)
+    })
+
+    it('nodeE.contentRouting.findProviders for existing record', (done) => {
+      nodeE.contentRouting.findProviders(cid, 5000, (err, providers) => {
+        expect(err).to.not.exist()
+        expect(providers).to.have.length.above(0)
+        done()
+      })
+    })
+
+    it('nodeC.contentRouting.findProviders for non existing record (timeout)', (done) => {
+      const cid = new CID('QmTp9VkYvnHyrqKQuFPiuZkiX9gPcqj6x5LJ1rmWuSnnnn')
+
+      nodeE.contentRouting.findProviders(cid, 5000, (err, providers) => {
+        expect(err).to.not.exist()
+        expect(providers).to.have.length(0)
+        done()
+      })
+    })
+  })
+})