overloadfinding.cs

SharpDevelop2.0.0 c#开发免费工具

// <file>
//     <copyright see="prj:///doc/copyright.txt"/>
//     <license see="prj:///doc/license.txt"/>
//     <owner name="Daniel Grunwald" email="[e-mail]"/>
//     <version>$Revision: 915 $</version>
// </file>

using System;
using System.Text;
using NUnit.Framework;
using ICSharpCode.SharpDevelop.Dom;

namespace ICSharpCode.SharpDevelop.Tests
{
	[TestFixture]
	public class OverloadFinding
	{
		[Test] public void Simple()
		{
			Test("(\"Hallo\")", 0, "(string a)", "(int b)");
			Test("(2)", 1, "(string a)", "(int b)");
		}
		
		[Test] public void WinForms()
		{
			string[] overloads = {"(object a)", "(TextBoxBase a)", "(Control a)", "(RichTextBox a)"};
			Test("(new RichTextBox())", 3, overloads);
			Test("(new Control())",     2, overloads);
			Test("(new TextBox())",     1, overloads);
			Test("(new Button())",      2, overloads);
			Test("(3)",                 0, overloads);
		}
		
		[Test] public void Params()
		{
			string[] overloads = {"(params int[] a)", "(int a, params int[] b)"};
			Test("()", 0, overloads);
			Test("(1)", 1, overloads);
			Test("(1, 2)", 1, overloads);
		}
		
		[Test] public void IntegerConversion()
		{
			string[] overloads = {"<T>(T a)", "(int a)"};
			Test("(1)", 1, overloads);
			Test("(short.MaxValue)", 1, overloads);
			Test("(long.MaxValue)", 0, overloads);
		}
		
		NRefactoryResolverTests nrrt = new NRefactoryResolverTests();
		
		void Test(string callExpr, int num, params string[] signatures)
		{
			StringBuilder b = new StringBuilder();
			int lineNumber = 0;
			++lineNumber; b.AppendLine("using System;");
			++lineNumber; b.AppendLine("using System.Windows.Forms;");
			++lineNumber; b.AppendLine("class TestClass {");
			++lineNumber; b.AppendLine(" void callingMethod() {");
			++lineNumber; b.AppendLine("   ");
			int callPosition = lineNumber;
			++lineNumber; b.AppendLine(" }");
			int[] positions = new int[signatures.Length];
			for (int i = 0; i < signatures.Length; i++) {
				b.Append(" void Method");
				b.Append(signatures[i]);
				++lineNumber; b.AppendLine(" {");
				positions[i] = lineNumber;
				++lineNumber; b.AppendLine(" }");
			}
			b.AppendLine("}");
			MemberResolveResult mrr = nrrt.Resolve<MemberResolveResult>(b.ToString(), "Method" + callExpr, callPosition);
			string msg = "wrong overload: ";
			for (int i = 0; i < positions.Length; i++) {
				if (positions[i] == mrr.ResolvedMember.Region.BeginLine)
					msg += signatures[i];
			}
			Assert.AreEqual(positions[num], mrr.ResolvedMember.Region.BeginLine, msg);
		}
	}
}