Adding aditional UT.

--HG--
branch : dev

src/Orchard.Tests.Modules/Widgets/Services/WidgetsServiceTest.cs

@@ -242,6 +242,9 @@ namespace Orchard.Tests.Modules.Widgets.Services {
             Assert.That(widgetPart3.Position, Is.EqualTo(Position3), "Widget remained in the same position");
         }
 
+        [Test, Ignore("Fix when possible")]
+        public void GetLayerWidgetsTest() {
+            LayerPart layerPart = _widgetService.CreateLayer(LayerName1, LayerDescription1, "");
             _contentManager.Flush();
 
             // same zone widgets