Set current page comparator to null explicitly which a comparator is …

…supplied to the constructor with options.full = true. See #108

lib/backbone-pageable.js

@@ -322,7 +322,7 @@
         var fullCollection = this.fullCollection;
 
         if (comparator && options.full) {
-          delete this.comparator;
+          this.comparator = null;
           fullCollection.comparator = comparator;
         }
 

test/setsorting.js

@@ -4,6 +4,21 @@ $(document).ready(function () {
 
   module("Backbone.PageableCollection - setSorting");
 
+  test("constructor", function () {
+    var comparator = function () { return 0; };
+    var Col = Backbone.PageableCollection.extend({
+      comparator: function () { return 1; }
+    });
+    var col = new Col([], {
+      mode: "client",
+      comparator: comparator,
+      full: true
+    });
+
+    ok(col.fullCollection.comparator === comparator);
+    ok(!col.comparator);
+  });
+
   test("_makeComparator", function () {
     var col, comparator;