diff --git a/services/track-changes/package.json b/services/track-changes/package.json
index be0c3487a0..cc2a0bc105 100644
--- a/services/track-changes/package.json
+++ b/services/track-changes/package.json
@@ -39,6 +39,7 @@
     "bunyan": "~0.22.1",
     "grunt-bunyan": "~0.5.0",
     "grunt-forever": "~0.4.2",
-    "timekeeper": "0.0.4"
+    "timekeeper": "0.0.4",
+    "memorystream": "0.3.1"
   }
 }
diff --git a/services/track-changes/test/unit/coffee/DocArchive/MongoAWS.coffee b/services/track-changes/test/unit/coffee/DocArchive/MongoAWS.coffee
index dd285075a0..6c3cf774a9 100644
--- a/services/track-changes/test/unit/coffee/DocArchive/MongoAWS.coffee
+++ b/services/track-changes/test/unit/coffee/DocArchive/MongoAWS.coffee
@@ -4,6 +4,8 @@ sinon = require("sinon")
 modulePath = "../../../../app/js/MongoAWS.js"
 SandboxedModule = require('sandboxed-module')
 {ObjectId} = require("mongojs")
+MemoryStream = require('memorystream')
+zlib = require "zlib"
 
 describe "MongoAWS", ->
 	beforeEach ->
@@ -20,95 +22,47 @@ describe "MongoAWS", ->
 			"logger-sharelatex": @logger = {log: sinon.stub(), error: sinon.stub(), err:->}
 			"aws-sdk": @awssdk = {}
 			"fs": @fs = {}
-			"s3-streams": @s3streams = {}
+			"s3-streams": @S3S = {}
 			"./mongojs" : { db: @db = {}, ObjectId: ObjectId }
 			"JSONStream": @JSONStream = {}
 			"readline-stream": @readline = sinon.stub()
 
 		@project_id = ObjectId().toString()
 		@doc_id = ObjectId().toString()
+		@pack_id = ObjectId()
 		@update = { v:123 }
 		@callback = sinon.stub()
-		
-	# describe "archiveDocHistory", ->
 
-	# 	beforeEach ->
-	# 		@awssdk.config = { update: sinon.stub() } 
-	# 		@awssdk.S3 = sinon.stub()
-	# 		@s3streams.WriteStream = sinon.stub()
-	# 		@db.docHistory = {}
-	# 		@db.docHistory.on = sinon.stub()
-	# 		@db.docHistory.find = sinon.stub().returns @db.docHistory
-	# 		@db.docHistory.on.returns
-	# 			pipe:->
-	# 				pipe:->
-	# 					on: (type, cb)-> 
-	# 						on: (type, cb)-> 
-	# 							cb()
-	# 		@JSONStream.stringify = sinon.stub()
+	describe "archivePack", ->
 
-	# 		@MongoAWS.archiveDocHistory @project_id, @doc_id, @update, @callback
+		beforeEach (done) ->
+			@awssdk.config = { update: sinon.stub() }
+			@awssdk.S3 = sinon.stub()
+			@S3S.WriteStream = MemoryStream.createWriteStream
+			@db.docHistory = {}
+			@db.docHistory.findOne = sinon.stub().callsArgWith(1, null, {"pack":"hello"})
 
-	# 	it "should call the callback", ->
-	# 		@callback.called.should.equal true
+			@MongoAWS.archivePack @project_id, @doc_id, @pack_id, (err, result) =>
+				@callback()
+				done()
 
-	# describe "unArchiveDocHistory", ->
+		it "should call the callback", ->
+			@callback.called.should.equal true
 
-	# 	beforeEach ->
-	# 		@awssdk.config = { update: sinon.stub() } 
-	# 		@awssdk.S3 = sinon.stub()
-	# 		@s3streams.ReadStream = sinon.stub()
+	describe "unArchivePack", ->
 
-	# 		@s3streams.ReadStream.returns
-	# 			#describe on 'open' behavior
-	# 			on: (type, cb)->
-	# 				#describe on 'error' 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()
+		beforeEach (done) ->
+			zlib.gzip '{"pack":"123"}', (err, zbuf) =>
+				@awssdk.config = { update: sinon.stub() }
+				@awssdk.S3 = sinon.stub()
+				@S3S.ReadStream = () ->
+					MemoryStream.createReadStream(zbuf, {readable:true})
+				@db.docHistory = {}
+				@db.docHistory.insert = sinon.stub().callsArgWith(1, null, "pack")
 
-	# 		@MongoAWS.handleBulk = sinon.stub()
-	# 		@MongoAWS.unArchiveDocHistory @project_id, @doc_id, @callback
-
-	# 	it "should call handleBulk", ->
-	# 		@MongoAWS.handleBulk.called.should.equal true
-
-	# describe "handleBulk", ->
-	# 	beforeEach ->
-	# 		@bulkOps = [{
-	# 			_id: ObjectId()
-	# 			doc_id: ObjectId()
-	# 			project_id: ObjectId()
-	# 		}, {
-	# 			_id: ObjectId()
-	# 			doc_id: ObjectId()
-	# 			project_id: ObjectId()
-	# 		}, {
-	# 			_id: ObjectId()
-	# 			doc_id: ObjectId()
-	# 			project_id: ObjectId()
-	# 		}]
-	# 		@bulk =
-	# 			find: sinon.stub().returns
-	# 				upsert: sinon.stub().returns
-	# 					updateOne: sinon.stub()
-	# 			execute: sinon.stub().callsArgWith(0, null, {})
-	# 		@db.docHistory = {}
-	# 		@db.docHistory.initializeUnorderedBulkOp = sinon.stub().returns @bulk
-	# 		@MongoAWS.handleBulk @bulkOps, @bulkOps.length, @callback
-
-	# 	it "should call updateOne for each operation", ->
-	# 		@bulk.find.calledWith({_id:@bulkOps[0]._id}).should.equal true
-	# 		@bulk.find.calledWith({_id:@bulkOps[1]._id}).should.equal true
-	# 		@bulk.find.calledWith({_id:@bulkOps[2]._id}).should.equal true
-
-	# 	it "should call the callback", ->
-	# 		@callback.calledWith(null).should.equal true
+				@MongoAWS.unArchivePack @project_id, @doc_id, @pack_id, (err, result) =>
+					@callback()
+					done()
 
+		it "should call db.docHistory.insert", ->
+			@db.docHistory.insert.called.should.equal true