overleaf/services/real-time/test/unit/coffee/WebsocketLoadBalancerTests.coffee

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SandboxedModule = require('sandboxed-module')
sinon = require('sinon')
require('chai').should()
modulePath = require('path').join __dirname, '../../../app/js/WebsocketLoadBalancer'
describe "WebsocketLoadBalancer", ->
beforeEach ->
@WebsocketLoadBalancer = SandboxedModule.require modulePath, requires:
"redis-sharelatex":
createClient: () ->
auth:->
2014-11-24 10:42:13 -05:00
"logger-sharelatex": { log: sinon.stub(), err: sinon.stub() }
@io = {}
@WebsocketLoadBalancer.rclientPub = publish: sinon.stub()
@WebsocketLoadBalancer.rclientSub =
subscribe: sinon.stub()
on: sinon.stub()
@room_id = "room-id"
@message = "message-to-editor"
@payload = ["argument one", 42]
describe "emitToRoom", ->
beforeEach ->
@WebsocketLoadBalancer.emitToRoom(@room_id, @message, @payload...)
it "should publish the message to redis", ->
@WebsocketLoadBalancer.rclientPub.publish
.calledWith("editor-events", JSON.stringify(
room_id: @room_id,
message: @message
payload: @payload
))
.should.equal true
describe "emitToAll", ->
beforeEach ->
@WebsocketLoadBalancer.emitToRoom = sinon.stub()
@WebsocketLoadBalancer.emitToAll @message, @payload...
it "should emit to the room 'all'", ->
@WebsocketLoadBalancer.emitToRoom
.calledWith("all", @message, @payload...)
.should.equal true
describe "listenForEditorEvents", ->
beforeEach ->
@WebsocketLoadBalancer._processEditorEvent = sinon.stub()
@WebsocketLoadBalancer.listenForEditorEvents()
it "should subscribe to the editor-events channel", ->
@WebsocketLoadBalancer.rclientSub.subscribe
.calledWith("editor-events")
.should.equal true
it "should process the events with _processEditorEvent", ->
@WebsocketLoadBalancer.rclientSub.on
.calledWith("message", sinon.match.func)
.should.equal true
describe "_processEditorEvent", ->
describe "with a designated room", ->
beforeEach ->
@io.sockets =
in: sinon.stub().returns(emit: @emit = sinon.stub())
data = JSON.stringify
room_id: @room_id
message: @message
payload: @payload
@WebsocketLoadBalancer._processEditorEvent(@io, "editor-events", data)
it "should send the message to all clients in the room", ->
@io.sockets.in
.calledWith(@room_id)
.should.equal true
@emit.calledWith(@message, @payload...).should.equal true
describe "when emitting to all", ->
beforeEach ->
@io.sockets =
emit: @emit = sinon.stub()
data = JSON.stringify
room_id: "all"
message: @message
payload: @payload
@WebsocketLoadBalancer._processEditorEvent(@io, "editor-events", data)
it "should send the message to all clients", ->
@emit.calledWith(@message, @payload...).should.equal true