using System;
using System.Collections.Generic;
using NUnit.Framework;
using Xamarin.Forms;
using Xamarin.Forms.Core.UnitTests;

namespace Xamarin.Forms.Xaml.UnitTests
{
	[AcceptEmptyServiceProvider]
	public class FooExtension : IMarkupExtension<IServiceProvider>
	{
		public IServiceProvider ProvideValue(IServiceProvider serviceProvider)
		{
			return serviceProvider;
		}

		object IMarkupExtension.ProvideValue(IServiceProvider serviceProvider)
		{
			return (this as IMarkupExtension<IServiceProvider>).ProvideValue(serviceProvider);
		}
	}

	public partial class AcceptEmptyServiceProvider : ContentPage
	{
		public AcceptEmptyServiceProvider()
		{
			InitializeComponent();
		}

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

		public IServiceProvider ServiceProvider { get; set; }

		[TestFixture]
		class Tests
		{
			[SetUp]
			public void Setup()
			{
				Device.PlatformServices = new MockPlatformServices();
			}

			[TearDown]
			public void TearDown()
			{
				Device.PlatformServices = null;
			}

			[TestCase(true)]
			[TestCase(false)]
			public void ServiceProviderIsNullOnAttributedExtensions(bool useCompiledXaml)
			{
				var p = new AcceptEmptyServiceProvider(useCompiledXaml);
				Assert.IsNull(p.ServiceProvider);
			}
		}
	}
}