test: add circuit browser test (#326)

test/circuit-relay.browser.js

@@ -0,0 +1,98 @@
+/* eslint-env mocha */
+'use strict'
+
+const chai = require('chai')
+chai.use(require('dirty-chai'))
+const expect = chai.expect
+
+const createNode = require('./utils/create-node')
+const tryEcho = require('./utils/try-echo')
+const echo = require('./utils/echo')
+
+const {
+  getPeerRelay
+} = require('./utils/constants')
+
+function setupNodeWithRelay (addrs, options = {}) {
+  options = {
+    config: {
+      relay: {
+        enabled: true
+      },
+      ...options.config
+    },
+    ...options
+  }
+
+  return new Promise((resolve) => {
+    createNode(addrs, options, (err, node) => {
+      expect(err).to.not.exist()
+
+      node.handle(echo.multicodec, echo)
+      node.start((err) => {
+        expect(err).to.not.exist()
+        resolve(node)
+      })
+    })
+  })
+}
+
+describe('circuit relay', () => {
+  let browserNode1
+  let browserNode2
+  let peerRelay
+
+  before('get peer relay', async () => {
+    peerRelay = await new Promise(resolve => {
+      getPeerRelay((err, peer) => {
+        expect(err).to.not.exist()
+        resolve(peer)
+      })
+    })
+  })
+
+  before('create the browser nodes', async () => {
+    [browserNode1, browserNode2] = await Promise.all([
+      setupNodeWithRelay([]),
+      setupNodeWithRelay([])
+    ])
+  })
+
+  before('connect to the relay node', async () => {
+    await Promise.all(
+      [browserNode1, browserNode2].map((node) => {
+        return new Promise(resolve => {
+          node.dialProtocol(peerRelay, (err) => {
+            expect(err).to.not.exist()
+            resolve()
+          })
+        })
+      })
+    )
+  })
+
+  before('give time for HOP support to be determined', async () => {
+    await new Promise(resolve => {
+      setTimeout(resolve, 1e3)
+    })
+  })
+
+  after(async () => {
+    await Promise.all(
+      [browserNode1, browserNode2].map((node) => {
+        return new Promise((resolve) => {
+          node.stop(resolve)
+        })
+      })
+    )
+  })
+
+  it('should be able to echo over relay', (done) => {
+    browserNode1.dialProtocol(browserNode2.peerInfo, echo.multicodec, (err, conn) => {
+      expect(err).to.not.exist()
+      expect(conn).to.exist()
+
+      tryEcho(conn, done)
+    })
+  })
+})