using System;
using System.Collections.Generic;

using Xamarin.Forms;

using NUnit.Framework;

namespace Xamarin.Forms.Xaml.UnitTests
{
	public partial class GenericsTests : ContentPage
	{
		public GenericsTests ()
		{
			InitializeComponent ();
		}

		public GenericsTests (bool useCompiledXaml)
		{
			//this stub will be replaced at compile time
		}

		[TestFixture]
		public class Tests
		{
			[Test]
			public void NoGenericsOnXaml2006 ()
			{
				var xaml = @"
				<ContentPage 
				xmlns=""http://xamarin.com/schemas/2014/forms""
				xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
				xmlns:scg=""clr-namespace:System.Collections.Generic;assembly=mscorlib"">
					<ContentPage.Resources>
						<ResourceDictionary>
							<scg:List x:TypeArguments=""Button"" x:Key=""genericList""/>
						</ResourceDictionary>
					</ContentPage.Resources>
				</ContentPage>";
				Assert.Throws (new XamlParseExceptionConstraint (8, 9), () => new ContentPage ().LoadFromXaml (xaml));
			}

			[TestCase (false)]
			[TestCase (true)]
			public void GenericSupportOnXaml2009 (bool useCompiledXaml)
			{
				var layout = new GenericsTests (useCompiledXaml);
				Assert.True (layout.Resources.ContainsKey ("genericButtonList"));
				var list = layout.Resources ["genericButtonList"];
				Assert.That (list, Is.TypeOf<List<Button>> ());
				Assert.AreEqual (2, ((List<Button>)list).Count);
			}

			[TestCase (false)]
			[TestCase (true)]
			public void FindGenericByName (bool useCompiledXaml)
			{
				var layout = new GenericsTests (useCompiledXaml);
				var list = layout.FindByName<List<Button>> ("myList");
				Assert.NotNull (list);
			}

			[TestCase (false)]
			[TestCase (true)]
			public void TestGenericParsing (bool useCompiledXaml)
			{
				var layout = new GenericsTests (useCompiledXaml);
				var list = layout.Resources ["list"];
				Assert.NotNull (list);
				Assert.That (list, Is.TypeOf<List<String>> ());

				var dict = layout.Resources ["dict"];
				Assert.NotNull (dict);
				Assert.That (dict, Is.TypeOf<Dictionary<string,string>> ());

				var queue = layout.Resources ["queue"];
				Assert.NotNull (dict);
				Assert.That (queue, Is.TypeOf<Queue<KeyValuePair<string,string>>> ());
			}

			[TestCase (false)]
			[TestCase (true)]
			public void TestXamlPrimitives (bool useCompiledXaml)
			{
				var layout = new GenericsTests (useCompiledXaml);
				var list = layout.Resources ["stringList"];
				Assert.NotNull (list);
				Assert.That (list, Is.TypeOf<List<String>> ());
			}
		}
	}
}