overleaf/services/document-updater/test/unit/coffee/RealTimeRedisManager/RealTimeRedisManagerTests.coffee

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sinon = require('sinon')
chai = require('chai')
should = chai.should()
modulePath = "../../../../app/js/RealTimeRedisManager.js"
SandboxedModule = require('sandboxed-module')
Errors = require "../../../../app/js/Errors"
describe "RealTimeRedisManager", ->
beforeEach ->
@rclient =
auth: () ->
exec: sinon.stub()
@rclient.multi = () => @rclient
@pubsubClient =
publish: sinon.stub()
@RealTimeRedisManager = SandboxedModule.require modulePath, requires:
"redis-sharelatex": createClient: (config) => if (config.name is 'pubsub') then @pubsubClient else @rclient
"settings-sharelatex":
redis:
documentupdater: @settings =
key_schema:
pendingUpdates: ({doc_id}) -> "PendingUpdates:#{doc_id}"
pubsub:
name: "pubsub"
"logger-sharelatex": { log: () -> }
"crypto": @crypto = { randomBytes: sinon.stub().withArgs(4).returns(Buffer.from([0x1, 0x2, 0x3, 0x4])) }
"os": @os = {hostname: sinon.stub().returns("somehost")}
@doc_id = "doc-id-123"
@project_id = "project-id-123"
@callback = sinon.stub()
describe "getPendingUpdatesForDoc", ->
beforeEach ->
@rclient.lrange = sinon.stub()
@rclient.ltrim = sinon.stub()
describe "successfully", ->
beforeEach ->
@updates = [
{ op: [{ i: "foo", p: 4 }] }
{ op: [{ i: "foo", p: 4 }] }
]
@jsonUpdates = @updates.map (update) -> JSON.stringify update
@rclient.exec = sinon.stub().callsArgWith(0, null, [@jsonUpdates])
@RealTimeRedisManager.getPendingUpdatesForDoc @doc_id, @callback
it "should get the pending updates", ->
@rclient.lrange
.calledWith("PendingUpdates:#{@doc_id}", 0, 7)
.should.equal true
it "should delete the pending updates", ->
@rclient.ltrim
.calledWith("PendingUpdates:#{@doc_id}", 8, -1)
.should.equal true
it "should call the callback with the updates", ->
@callback.calledWith(null, @updates).should.equal true
describe "when the JSON doesn't parse", ->
beforeEach ->
@jsonUpdates = [
JSON.stringify { op: [{ i: "foo", p: 4 }] }
"broken json"
]
@rclient.exec = sinon.stub().callsArgWith(0, null, [@jsonUpdates])
@RealTimeRedisManager.getPendingUpdatesForDoc @doc_id, @callback
it "should return an error to the callback", ->
@callback.calledWith(new Error("JSON parse error")).should.equal true
describe "getUpdatesLength", ->
beforeEach ->
@rclient.llen = sinon.stub().yields(null, @length = 3)
@RealTimeRedisManager.getUpdatesLength @doc_id, @callback
it "should look up the length", ->
@rclient.llen.calledWith("PendingUpdates:#{@doc_id}").should.equal true
it "should return the length", ->
@callback.calledWith(null, @length).should.equal true
describe "sendData", ->
beforeEach ->
@message_id = "doc:somehost:01020304-0"
@RealTimeRedisManager.sendData({op: "thisop"})
it "should send the op with a message id", ->
@pubsubClient.publish.calledWith("applied-ops", JSON.stringify({op:"thisop",_id:@message_id})).should.equal true