add UI Initialize Test

src/modules/fancyzones/FancyZonesEditorCommon/Data/CustomLayoutEnumExtension.cs

@@ -0,0 +1,44 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace FancyZonesEditorCommon.Data
+{
+    public enum CustomLayout
+    {
+        Canvas,
+        Grid,
+    }
+
+    public static class CustomLayoutEnumExtension
+    {
+        private const string CanvasJsonTag = "canvas";
+        private const string GridJsonTag = "grid";
+
+        public static string TypeToString(this CustomLayout value)
+        {
+            switch (value)
+            {
+                case CustomLayout.Canvas:
+                    return CanvasJsonTag;
+                case CustomLayout.Grid:
+                    return GridJsonTag;
+            }
+
+            return CanvasJsonTag;
+        }
+
+        public static CustomLayout TypeFromString(string value)
+        {
+            switch (value)
+            {
+                case CanvasJsonTag:
+                    return CustomLayout.Canvas;
+                case GridJsonTag:
+                    return CustomLayout.Grid;
+            }
+
+            return CustomLayout.Canvas;
+        }
+    }
+}