//

// IListContract.cs

//

// Author:

//   Jonathan Pryor  <jpryor@novell.com>

//

// Copyright (c) 2010 Novell, Inc. (http://www.novell.com)

//

// Permission is hereby granted, free of charge, to any person obtaining

// a copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to

// permit persons to whom the Software is furnished to do so, subject to

// the following conditions:

//

// The above copyright notice and this permission notice shall be

// included in all copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//

using System;

using System.Collections.Generic;

using System.Linq;

using NUnit.Framework;

using Cadenza.Collections;

using Cadenza.Tests;

namespace Cadenza.Collections.Tests {

	public abstract class ListContract<T> : CollectionContract<T> {

		private IList<T> CreateList (IEnumerable<T> values)

		{

			return (IList<T>) CreateCollection (values);

		}

		[Test]

		public void IndexOf ()

		{

			var a = CreateValueA ();

			var b = CreateValueB ();

			var list = CreateList (new T[0]);

			Assert.AreEqual (-1,  list.IndexOf (a));

			try {

				list.Add (a);

				Assert.AreEqual (0,   list.IndexOf (a));

				list.Add (b);

				Assert.AreEqual (1,   list.IndexOf (b));

				list.Remove (a);

				Assert.AreEqual (-1,  list.IndexOf (a));

				Assert.AreEqual (0,   list.IndexOf (b));

				list.Remove (b);

				Assert.AreEqual (-1,  list.IndexOf (b));

			}

			catch (NotSupportedException) {

				Assert.IsTrue (list.IsReadOnly);

			}

		}

		[Test]

		public void Insert ()

		{

			var a = CreateValueA ();

			var b = CreateValueB ();

			var list = CreateList (new T[0]);

			try {

				Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert (-1, a));

				Assert.Throws<ArgumentOutOfRangeException>(() => list.Insert (1, a));

				list.Insert (0, a);

				Assert.AreEqual (0, list.IndexOf (a));

				list.Insert (0, b);

				Assert.AreEqual (2, list.Count);

				Assert.AreEqual (0, list.IndexOf (b));

				Assert.AreEqual (1, list.IndexOf (a));

			}

			catch (NotSupportedException) {

				Assert.IsTrue (list.IsReadOnly);

			}

		}

		[Test]

		public void RemoveAt ()

		{

			var a = CreateValueA ();

			var b = CreateValueB ();

			var list = CreateList (new T [0]);

			try {

				Assert.Throws<ArgumentOutOfRangeException>(() => list.RemoveAt (-1));

				Assert.Throws<ArgumentOutOfRangeException>(() => list.RemoveAt (0));

				list.Add (a);

				Assert.AreEqual (1, list.Count);

				list.RemoveAt (0);

				Assert.AreEqual (0, list.Count);

				list.Add (a);

				list.Add (b);

				list.RemoveAt (0);

				Assert.AreEqual (1, list.Count);

				Assert.AreEqual (0, list.IndexOf (b));

			}

			catch (NotSupportedException) {

				Assert.IsTrue (list.IsReadOnly);

			}

		}

		[Test]

		public void Item ()

		{

			var a = CreateValueA ();

			var b = CreateValueB ();

			var list = CreateList (new []{a});

			Assert.AreEqual (a, list [0]);

			Assert.Throws<ArgumentOutOfRangeException>(() => Ignore (list [-1]));

			try {

				Assert.Throws<ArgumentOutOfRangeException>(() => list [-1] = a);

				Assert.Throws<ArgumentOutOfRangeException>(() => list [1] = a);

				list [0] = b;

				Assert.AreEqual (-1,  list.IndexOf (a));

				Assert.AreEqual (0,   list.IndexOf (b));

			}

			catch (NotSupportedException) {

				Assert.IsTrue (list.IsReadOnly);

			}

		}

	}

}