Fixed bug that only occurs in persistent databases (setOperation was not called).

src/Connectors/Test.js

@@ -4,7 +4,7 @@
 module.exports = function (Y) {
   var globalRoom = {
     users: {},
-    buffers: {}, // TODO: reimplement this idea. This does not cover all cases!! Here, you have a queue which is unrealistic (i.e. think about multiple incoming connections)
+    buffers: {},
     removeUser: function (user) {
       for (var i in this.users) {
         this.users[i].userLeft(user)

src/SpecHelper.js

@@ -11,6 +11,7 @@ require('../../y-memory/src/Memory.js')(Y)
 require('../../y-array/src/Array.js')(Y)
 require('../../y-map/src/Map.js')(Y)
 require('../../y-indexeddb/src/IndexedDB.js')(Y)
+require('../../y-leveldb/src/LevelDB.js')(Y)
 module.exports = Y
 
 var g
@@ -28,7 +29,7 @@ Math.seedrandom = require('seedrandom')
 
 g.generateRandomSeed = function generateRandomSeed() {
   var seed
-  if (window.location.hash.length > 1) {
+  if (typeof window != 'undefined' && window.location.hash.length > 1) {
     seed = window.location.hash.slice(1) // first character is the hash!
     console.warn('Using random seed that was specified in the url!')
   } else {
@@ -74,6 +75,8 @@ g.wait = wait
 g.databases = ['memory']
 if (typeof window !== 'undefined') {
   g.databases.push('indexeddb')
+} else {
+  g.databases.push('leveldb')
 }
 /*
   returns a random element of o.

src/Transaction.js

@@ -502,6 +502,7 @@ module.exports = function (Y/* :any */) {
         if (o.right != null) {
           var right = yield* this.getOperation(o.right)
           right.left = o.left
+          yield* this.setOperation(right)
 
           if (o.originOf != null && o.originOf.length > 0) {
             // find new origin of right ops
@@ -568,10 +569,6 @@ module.exports = function (Y/* :any */) {
             }
             // we don't need to set right here, because
             // right should be in o.originOf => it is set it the previous for loop
-          } else {
-            // we didn't need to reset the origin of right
-            // so we have to set right here
-            yield* this.setOperation(right)
           }
         }
         // o may originate in another operation.