SharpDevelop/ICSharpCode.NRefactory.Tests/Utils/CompositeFormatStringParser/CompositeFormatStringParserTests.cs

//
// CompositeFormatStringParserTests.cs
//
// Author:
//       Simon Lindgren <simon.n.lindgren@gmail.com>
//
// Copyright (c) 2012 Simon Lindgren
//
// 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 System.Linq;
using System;
using System.Collections.Generic;

namespace ICSharpCode.NRefactory.Utils
{
	[TestFixture]
	public class CompositeFormatStringParserTests
	{

		IList<IFormatStringSegment> ParseTest(string format, params IFormatStringSegment[] expectedFormatSegments)
		{
			var parser = new CompositeFormatStringParser();
			var actualFormatSegments = parser.Parse(format).ToList();

			Console.WriteLine("Expected format segments:");
			foreach (var item in expectedFormatSegments) {
				Console.WriteLine(item.ToString());
			}
			Console.WriteLine("Actual format segments:");
			foreach (var item in actualFormatSegments) {
				Console.WriteLine(item.ToString());
			}

			Assert.AreEqual(expectedFormatSegments, actualFormatSegments);
			return actualFormatSegments;
		}

		[Test]
		public void Index()
		{
			ParseTest("{0}", new FormatItem(0) { StartLocation = 0, EndLocation = 3 });
		}
		
		[Test]
		public void PositiveAlignment()
		{
			ParseTest("{0,4}", new FormatItem(0, 4) { StartLocation = 0, EndLocation = 5 });
		}
		
		[Test]
		public void NegativeAlignment()
		{
			ParseTest("{0,-4}", new FormatItem(0, -4) { StartLocation = 0, EndLocation = 6 });
		}
		
		[Test]
		public void AlignmentWhiteSpace()
		{
			ParseTest("{0, -4}", new FormatItem(0, -4) { StartLocation = 0, EndLocation = 7 });
		}
		
		[Test]
		public void SubFormatString()
		{
			ParseTest("{0:aaaa}", new FormatItem(0, null, "aaaa") { StartLocation = 0, EndLocation = 8 });
		}
		
		[Test]
		public void CompleteFormatItem()
		{
			ParseTest("{0, -45:aaaa}", new FormatItem(0, -45, "aaaa") { StartLocation = 0, EndLocation = 13 });
		}
		
		[Test]
		public void MultipleCompleteFormatItems()
		{
			ParseTest("{0, -45:aaaa}{3, 67:bbbb}",
			          new FormatItem(0, -45, "aaaa") { StartLocation = 0, EndLocation = 13 },
			          new FormatItem(3, 67, "bbbb") { StartLocation = 13, EndLocation = 25 });
		}
		
		[Test]
		public void BraceEscape()
		{
			ParseTest("{{}}", new TextSegment("{}"));
		}

		[Test]
		public void TextSegment()
		{
			ParseTest("Some Text", new TextSegment("Some Text"));
		}

		[Test]
		public void SingleCharacterTextSegment()
		{
			ParseTest("A", new TextSegment("A"));
		}
		
		[Test]
		public void FormatStringWithPrefixText()
		{
			ParseTest("Some Text {0}",
			          new TextSegment("Some Text "),
			          new FormatItem(0) { StartLocation = 10, EndLocation = 13 });
		}
		
		[Test]
		public void FormatStringWithPostfixText()
		{
			ParseTest("{0} Some Text",
			          new FormatItem(0)  { StartLocation = 0, EndLocation = 3 },
					  new TextSegment(" Some Text", 3));
		}
		
		[Test]
		public void FormatStringWithEscapableBracesInSubFormatString()
		{
			ParseTest("A weird string: {0:{{}}}",
			          new TextSegment("A weird string: "),
			          new FormatItem(0, null, "{}") { StartLocation = 16, EndLocation = 24});
		}
		
		[Test]
		public void EndsAfterOpenBrace()
		{
			var segments = ParseTest("{", new TextSegment("{"));
			var segment = segments [0];
			var errors = segment.Errors.ToList();
			Assert.AreEqual(1, errors.Count, "Too many or too few errors.");
			var error = errors [0];
			Assert.AreEqual("{{", error.SuggestedReplacementText);
		}
	}
}