add some unit test

services/track-changes/app/coffee/MongoManager.coffee

@@ -122,7 +122,7 @@ module.exports = MongoManager =
 		db.docHistory.ensureIndex { project_id: 1, "meta.end_ts": 1 }, { background: true }
 		# For finding all packs that affect a project (use a sparse index so only packs are included)
 		db.docHistory.ensureIndex { project_id: 1, "pack.0.meta.end_ts": 1, "meta.end_ts": 1}, { background: true, sparse: true }
-		# For finding updates that dont yet have a project_id and need it inserting
+		# For finding updates that don't yet have a project_id and need it inserting
 		db.docHistory.ensureIndex { doc_id: 1, project_id: 1 }, { background: true }
 		# For finding project meta-data
 		db.projectHistoryMetaData.ensureIndex { project_id: 1 }, { background: true }

services/track-changes/test/unit/coffee/DocArchive/DocArchiveManager.coffee

@@ -0,0 +1,44 @@
+chai = require('chai')
+sinon = require("sinon")
+should = chai.should()
+modulePath = "../../../../app/js/DocArchiveManager.js"
+SandboxedModule = require('sandboxed-module')
+ObjectId = require("mongojs").ObjectId
+
+describe "DocArchiveManager", ->
+	beforeEach ->
+		@DocArchiveManager = SandboxedModule.require modulePath, requires:
+			"./MongoManager" : @MongoManager = sinon.stub()
+			"./MongoAWS" : @MongoAWS = sinon.stub()
+			"./LockManager" : @LockManager = sinon.stub()
+			"./DocstoreHandler" : @DocstoreHandler = sinon.stub()
+			"logger-sharelatex": @logger = {log: sinon.stub(), error: sinon.stub(), err:->}
+			"settings-sharelatex": @settings =
+				filestore:
+					backend: 's3'
+
+		@mongoDocs = [{
+			_id: ObjectId()
+		}, {
+			_id: ObjectId()
+		}, {
+			_id: ObjectId()
+		}]
+
+		@project_id = "project-id-123"
+		@doc_id = "doc-id-123"
+		@callback = sinon.stub()
+		
+	describe "archiveAllDocsChanges", ->
+
+		it "should archive all project docs change", (done)->
+
+			@DocstoreHandler.getAllDocs = sinon.stub().callsArgWith(1, null, @mongoDocs)
+			@DocArchiveManager.archiveDocChangesWithLock = sinon.stub().callsArgWith(2, null)
+			
+			@DocArchiveManager.archiveAllDocsChanges @project_id, (err)=>
+				@DocArchiveManager.archiveDocChangesWithLock.calledWith(@project_id, @mongoDocs[0]._id).should.equal true
+				@DocArchiveManager.archiveDocChangesWithLock.calledWith(@project_id, @mongoDocs[1]._id).should.equal true
+				@DocArchiveManager.archiveDocChangesWithLock.calledWith(@project_id, @mongoDocs[2]._id).should.equal true
+				should.not.exist err
+				done()

services/track-changes/test/unit/coffee/DocArchive/DocstoreHandler.coffee

@@ -0,0 +1,55 @@
+chai = require('chai')
+chai.should()
+sinon = require("sinon")
+modulePath = "../../../../app/js/DocstoreHandler.js"
+SandboxedModule = require('sandboxed-module')
+
+describe "DocstoreHandler", ->
+	beforeEach ->
+		@requestDefaults = sinon.stub().returns(@request = sinon.stub())
+		@DocstoreHandler = SandboxedModule.require modulePath, requires:
+			"request" : defaults: @requestDefaults
+			"settings-sharelatex": @settings =
+				apis:
+					docstore:
+						url: "docstore.sharelatex.com"
+			"logger-sharelatex": @logger = {log: sinon.stub(), error: sinon.stub(), err:->}
+
+		@requestDefaults.calledWith(jar: false).should.equal true
+
+		@project_id = "project-id-123"
+		@doc_id = "doc-id-123"
+		@callback = sinon.stub()
+		
+	describe "getAllDocs", ->
+		describe "with a successful response code", ->
+			beforeEach ->
+				@request.get = sinon.stub().callsArgWith(1, null, statusCode: 204, @docs = [{ _id: "mock-doc-id" }])
+				@DocstoreHandler.getAllDocs @project_id, @callback
+
+			it "should get all the project docs in the docstore api", ->
+				@request.get
+					.calledWith({
+						url: "#{@settings.apis.docstore.url}/project/#{@project_id}/doc"
+						json: true
+					})
+					.should.equal true
+
+			it "should call the callback with the docs", ->
+				@callback.calledWith(null, @docs).should.equal true
+
+		describe "with a failed response code", ->
+			beforeEach ->
+				@request.get = sinon.stub().callsArgWith(1, null, statusCode: 500, "")
+				@DocstoreHandler.getAllDocs @project_id, @callback
+
+			it "should call the callback with an error", ->
+				@callback.calledWith(new Error("docstore api responded with non-success code: 500")).should.equal true
+
+			it "should log the error", ->
+				@logger.error
+					.calledWith({
+						err: new Error("docstore api responded with a non-success code: 500")
+						project_id: @project_id
+					}, "error getting all docs from docstore")
+					.should.equal true

services/track-changes/test/unit/coffee/DocArchive/MongoAWS.coffee

@@ -0,0 +1,78 @@
+chai = require('chai')
+chai.should()
+sinon = require("sinon")
+modulePath = "../../../../app/js/MongoAWS.js"
+SandboxedModule = require('sandboxed-module')
+{ObjectId} = require("mongojs")
+
+describe "MongoAWS", ->
+	beforeEach ->
+		@MongoAWS = SandboxedModule.require modulePath, requires:
+			"settings-sharelatex": @settings =
+				filestore:
+					s3:
+						secret: "s3-secret"
+						key: "s3-key"
+					stores:
+						user_files: "s3-bucket"
+			"child_process": @child_process = {}
+			"mongo-uri": @mongouri = {}
+			"logger-sharelatex": @logger = {log: sinon.stub(), error: sinon.stub(), err:->}
+			"aws-sdk": @awssdk = {}
+			"fs": @fs = {}
+			"s3-streams": @s3streams = {}
+			"./mongojs" : { db: @db = {}, ObjectId: ObjectId }
+			"JSONStream": @JSONStream = {}
+			"readline-stream": @readline = sinon.stub()
+
+		@bulkLimit = @MongoAWS.bulkLimit
+		@project_id = ObjectId().toString()
+		@doc_id = ObjectId().toString()
+		@callback = sinon.stub()
+		
+	describe "archiveDocHistory", ->
+
+		beforeEach ->
+			@awssdk.config = { update: sinon.stub() } 
+			@awssdk.S3 = sinon.stub()
+			@s3streams.WriteStream = sinon.stub()
+			@db.docHistory = {}
+			@db.docHistory.pipe = sinon.stub()
+			@db.docHistory.find = sinon.stub().returns @db.docHistory
+			@db.docHistory.pipe.returns
+				pipe:->
+					on: (type, cb)-> 
+						if type == "finish"
+							cb()
+			@JSONStream.stringify = sinon.stub()
+
+			@MongoAWS.archiveDocHistory @project_id, @doc_id, @callback
+
+		it "should call the callback", ->
+			@callback.calledWith(null).should.equal true
+
+	describe "unArchiveDocHistory", ->
+
+		beforeEach ->
+			@awssdk.config = { update: sinon.stub() } 
+			@awssdk.S3 = sinon.stub()
+			@s3streams.ReadStream = sinon.stub()
+
+			@s3streams.ReadStream.returns
+				#describe on 'open' behavior
+				on: (type, cb)->
+					pipe:->
+						#describe on 'data' behavior
+						on: (type, cb)->
+							cb([])
+							#describe on 'end' behavior
+							on: (type, cb)-> 
+								cb()
+								#describe on 'error' behavior
+								on: sinon.stub()
+
+			@MongoAWS.handleBulk = sinon.stub()
+			@MongoAWS.unArchiveDocHistory @project_id, @doc_id, @callback
+
+		it "should call handleBulk", ->
+			@MongoAWS.handleBulk.calledWith([],@callback).should.equal true

services/track-changes/test/unit/coffee/HttpController/HttpControllerTests.coffee

@@ -13,6 +13,7 @@ describe "HttpController", ->
 			"./DiffManager": @DiffManager = {}
 			"./RestoreManager": @RestoreManager = {}
 			"./PackManager": @PackManager = {}
+			"./DocArchiveManager": @DocArchiveManager = {}
 		@doc_id = "doc-id-123"
 		@project_id = "project-id-123"
 		@next = sinon.stub()
@@ -130,3 +131,39 @@ describe "HttpController", ->
 
 		it "should return a success code", ->
 			@res.send.calledWith(204).should.equal true
+
+	describe "archiveProject", ->
+		beforeEach ->
+			@req =
+				params:
+					project_id: @project_id
+			@res =
+				send: sinon.stub()
+			@DocArchiveManager.archiveAllDocsChanges = sinon.stub().callsArg(1)
+			@HttpController.archiveProject @req, @res, @next
+
+		it "should process archive doc changes", ->
+			@DocArchiveManager.archiveAllDocsChanges
+				.calledWith(@project_id)
+				.should.equal true
+
+		it "should return a success code", ->
+			@res.send.calledWith(204).should.equal true
+
+	describe "unArchiveProject", ->
+		beforeEach ->
+			@req =
+				params:
+					project_id: @project_id
+			@res =
+				send: sinon.stub()
+			@DocArchiveManager.unArchiveAllDocsChanges = sinon.stub().callsArg(1)
+			@HttpController.unArchiveProject @req, @res, @next
+
+		it "should process unarchive doc changes", ->
+			@DocArchiveManager.unArchiveAllDocsChanges
+				.calledWith(@project_id)
+				.should.equal true
+
+		it "should return a success code", ->
+			@res.send.calledWith(204).should.equal true

services/track-changes/test/unit/coffee/MongoManager/MongoManagerTests.coffee

@@ -398,3 +398,89 @@ describe "MongoManager", ->
 
 		it "should call the callback", ->
 			@callback.called.should.equal true
+
+	describe "getDocChangesCount", ->
+		beforeEach ->
+			@db.docHistory =
+				count: sinon.stub().callsArg(2)
+			@MongoManager.getDocChangesCount @doc_id, @callback
+
+		it "should return if there is any doc changes", ->
+			@db.docHistory.count
+				.calledWith({
+					doc_id: ObjectId(@doc_id)
+					inS3 : { $exists : false }
+				}, {
+				})
+				.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true
+
+	describe "getArchivedDocChanges", ->
+		beforeEach ->
+			@db.docHistory =
+				count: sinon.stub().callsArg(2)
+			@MongoManager.getArchivedDocChanges @doc_id, @callback
+
+		it "should return if there is any archived doc changes", ->
+			@db.docHistory.count
+				.calledWith({
+					doc_id: ObjectId(@doc_id)
+					inS3 : true
+				}, {
+				})
+				.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true
+
+	describe "markDocHistoryAsArchived", ->
+		beforeEach ->
+			@update = { _id: ObjectId(), op: "op", meta: "meta", v: "v"}
+			@db.docHistory =
+				update: sinon.stub().callsArg(2)
+				remove: sinon.stub().callsArg(1)
+			@MongoManager.markDocHistoryAsArchived @doc_id, @update, @callback
+
+		it "should update last doc change with inS3 flag", ->
+			@db.docHistory.update
+				.calledWith({
+					_id: ObjectId(@update._id)
+				},{
+					$set : { inS3 : true }
+				})
+				.should.equal true
+
+		it "should remove any other doc changes before last update", ->
+			@db.docHistory.remove
+				.calledWith({
+					doc_id: ObjectId(@doc_id)
+					inS3 : { $exists : false }
+					v: { $lt : @update.v }
+					expiresAt: {$exists : false}
+				})
+				.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true
+
+	describe "markDocHistoryAsUnarchived", ->
+		beforeEach ->
+			@db.docHistory =
+				update: sinon.stub().callsArg(3)
+			@MongoManager.markDocHistoryAsUnarchived @doc_id, @callback
+
+		it "should remove any doc changes inS3 flag", ->
+			@db.docHistory.update
+				.calledWith({
+					doc_id: ObjectId(@doc_id)
+				},{
+					$unset : { inS3 : true }
+				},{
+					multi: true
+				})
+				.should.equal true
+
+		it "should call the callback", ->
+			@callback.called.should.equal true