//
// PangoTests.cs
//
// Author:
//       Vsevolod Kukol <sevoku@microsoft.com>
//
// Copyright (c) 2017 (c) Microsoft Corporation
//
// 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 NUnit.Framework;
using Xwt.GtkBackend;

namespace Xwt
{
	[TestFixture]
	public class PangoUtilTests
	{
		[Test]
		public void TextIndexerAscii()
		{
			var str = "Test";
			var indexer = new TextIndexer(str);

			Assert.AreEqual(0, indexer.IndexToByteIndex(0));
			Assert.AreEqual(0, indexer.ByteIndexToIndex(0));
			Assert.AreEqual(1, indexer.IndexToByteIndex(1));
			Assert.AreEqual(1, indexer.ByteIndexToIndex(1));
			Assert.AreEqual(2, indexer.IndexToByteIndex(2));
			Assert.AreEqual(2, indexer.ByteIndexToIndex(2));
			Assert.AreEqual(3, indexer.IndexToByteIndex(3));
			Assert.AreEqual(3, indexer.ByteIndexToIndex(3));
		}

		[Test]
		public void TextIndexerUnicode()
		{
			var str = "バージョン";
			var indexer = new TextIndexer(str);

			Assert.AreEqual(0, indexer.IndexToByteIndex(0));
			Assert.AreEqual(3, indexer.IndexToByteIndex(1));
			Assert.AreEqual(6, indexer.IndexToByteIndex(2));

			Assert.AreEqual(0, indexer.ByteIndexToIndex(0));
			Assert.AreEqual(0, indexer.ByteIndexToIndex(1));
			Assert.AreEqual(0, indexer.ByteIndexToIndex(2));
			Assert.AreEqual(1, indexer.ByteIndexToIndex(3));
			Assert.AreEqual(1, indexer.ByteIndexToIndex(4));
			Assert.AreEqual(1, indexer.ByteIndexToIndex(5));
		}

		[Test]
		public void TextIndexerMixed()
		{
			var str = "バAジョン";
			var indexer = new TextIndexer(str);

			Assert.AreEqual(0, indexer.IndexToByteIndex(0));
			Assert.AreEqual(3, indexer.IndexToByteIndex(1));
			Assert.AreEqual(4, indexer.IndexToByteIndex(2));

			Assert.AreEqual(0, indexer.ByteIndexToIndex(0));
			Assert.AreEqual(0, indexer.ByteIndexToIndex(1));
			Assert.AreEqual(0, indexer.ByteIndexToIndex(2));
			Assert.AreEqual(1, indexer.ByteIndexToIndex(3));
			Assert.AreEqual(2, indexer.ByteIndexToIndex(4));
			Assert.AreEqual(2, indexer.ByteIndexToIndex(5));
		}
	}
}

