fix(slideBox): if selected binding is string, parse to integer

js/angular/controller/slideBoxController.js

@@ -178,6 +178,8 @@ function(scope, element, $log, $document, $$q, $timeout, $interval, $$ionicAttac
   // adds data to the queue for selection.
   // Index can be either a number or a getter (to be called when starting the slide)
   function select(newIndex, transitionDuration, isDrag) {
+    newIndex = parseInt(newIndex);
+    if (isNaN(newIndex) || newIndex < 0) return;
     slideQueue.unshift([
       angular.isFunction(newIndex) ? newIndex : function() { return newIndex; },
       transitionDuration || SLIDE_TRANSITION_DURATION,

test/unit/angular/directive/slideBox.unit.js

@@ -340,6 +340,24 @@ describe('ionSlideBox', function() {
         expect(slideDisplays(el)).toEqual(['selected', 'next', 'previous']);
       }));
 
+      it('strings and negative numbers', inject(function($timeout, $rootScope) {
+        var el = setup();
+        $timeout.flush();
+
+        // Do nothing for -1
+        $del.select(-1);
+        $timeout.verifyNoPendingTasks();
+
+        // Do nothing for NaN
+        $del.select(NaN);
+        $timeout.verifyNoPendingTasks();
+
+        // parse to int
+        $del.select('1');
+        $timeout.flush();
+        expect($del.selected()).toBe(1);
+      }));
+
       it('when queueing, should only publish after final slide', inject(function($timeout, $rootScope) {
         $rootScope.changed = jasmine.createSpy('changed');
         $rootScope.start = jasmine.createSpy('start');