// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.Web;
using System.Web.Mvc;
using Moq;
using Xunit;

namespace Microsoft.Web.Mvc.Test
{
    public class SessionValueProviderFactoryTest
    {
        [Fact]
        public void GetValueProvider()
        {
            // Arrange
            Dictionary<string, object> backingStore = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase)
            {
                { "foo", "fooValue" },
                { "bar.baz", "barBazValue" }
            };
            MockSessionState session = new MockSessionState(backingStore);

            Mock<ControllerContext> mockControllerContext = new Mock<ControllerContext>();
            mockControllerContext.Setup(o => o.HttpContext.Session).Returns(session);

            SessionValueProviderFactory factory = new SessionValueProviderFactory();

            // Act
            IValueProvider provider = factory.GetValueProvider(mockControllerContext.Object);

            // Assert
            Assert.True(provider.ContainsPrefix("bar"));
            Assert.Equal("fooValue", provider.GetValue("foo").AttemptedValue);
            Assert.Equal(CultureInfo.InvariantCulture, provider.GetValue("foo").Culture);
        }

        private sealed class MockSessionState : HttpSessionStateBase
        {
            private readonly IDictionary<string, object> _backingStore;

            public MockSessionState(IDictionary<string, object> backingStore)
            {
                _backingStore = backingStore;
            }

            public override object this[string name]
            {
                get { return _backingStore[name]; }
                set { _backingStore[name] = value; }
            }

            public override IEnumerator GetEnumerator()
            {
                return _backingStore.Keys.GetEnumerator();
            }
        }
    }
}