Use Dropbox Real-time polling

services/web/test/UnitTests/coffee/Dropbox/DropboxWebhookHandlerTests.coffee

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+SandboxedModule = require('sandboxed-module')
+assert = require('assert')
+require('chai').should()
+sinon = require('sinon')
+modulePath = require('path').join __dirname, '../../../../app/js/Features/Dropbox/DropboxWebhookHandler.js'
+
+describe 'DropboxWebhookHandler', ->
+	beforeEach ->
+		@DropboxWebhookHandler = SandboxedModule.require modulePath, requires:
+			"../../models/User": User: @User = {}
+			"../ThirdPartyDataStore/TpdsUpdateSender": @TpdsUpdateSender = {}
+			'logger-sharelatex':
+				log:->
+				err:->
+		@callback = sinon.stub()
+
+	describe "pollDropboxUids", ->
+		beforeEach (done) ->
+			@dropbox_uids = [
+				"123456",
+				"789123"
+			]
+			@DropboxWebhookHandler.pollDropboxUid = sinon.stub().callsArg(1)
+			@DropboxWebhookHandler.pollDropboxUids @dropbox_uids, done
+			
+		it "should call pollDropboxUid for each uid", ->
+			for uid in @dropbox_uids
+				@DropboxWebhookHandler.pollDropboxUid
+					.calledWith(uid)
+					.should.equal true
+					
+	describe "pollDropboxUid", ->
+		beforeEach ->
+			@dropbox_uid = "dropbox-123456"
+			@user_id = "sharelatex-user-id"
+			@User.find = sinon.stub().callsArgWith(1, null, [ _id: @user_id ])
+			@TpdsUpdateSender.pollDropboxForUser = sinon.stub().callsArg(1)
+			@DropboxWebhookHandler.pollDropboxUid @dropbox_uid, @callback
+			
+		it "should look up the user", ->
+			@User.find
+				.calledWith({ "dropbox.access_token.uid": @dropbox_uid, "features.dropbox": true })
+				.should.equal true
+				
+		it "should poll the user's Dropbox", ->
+			@TpdsUpdateSender.pollDropboxForUser
+				.calledWith(@user_id)
+				.should.equal true
+				
+		it "should call the callback", ->
+			@callback.called.should.equal true