// Copyright (c) Microsoft Open Technologies, Inc.
// All Rights Reserved
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
// WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF
// TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR
// NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing
// permissions and limitations under the License.

using Xunit;

namespace Microsoft.AspNet.Mvc.Rendering
{
    public class ViewContextTests
    {
        [Fact]
        public void SettingViewData_AlsoUpdatesViewBag()
        {
            // Arrange (eventually passing null to these consturctors will throw)
            var context = new ViewContext(new ActionContext(null, null, null, null), view: null, viewData: null, writer: null);
            var originalViewData = context.ViewData = new ViewDataDictionary(metadataProvider: null);
            var replacementViewData = new ViewDataDictionary(metadataProvider: null);

            // Act
            context.ViewBag.Hello = "goodbye";
            context.ViewData = replacementViewData;
            context.ViewBag.Another = "property";

            // Assert
            Assert.NotSame(originalViewData, context.ViewData);
            Assert.Same(replacementViewData, context.ViewData);
            Assert.Null(context.ViewBag.Hello);
            Assert.Equal("property", context.ViewBag.Another);
            Assert.Equal("property", context.ViewData["Another"]);
        }
    }
}