// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;
using System.Reflection;
using NUnit.Framework;
using ICSharpCode.NRefactory.VB.Dom;
using ICSharpCode.NRefactory.VB.Parser;
using ICSharpCode.NRefactory.VB.Visitors;

namespace ICSharpCode.NRefactory.VB.Tests
{
	[TestFixture]
	public class StructuralTest
	{
		[Test]
		public void TestToStringMethods()
		{
			Type[] allTypes = typeof(INode).Assembly.GetTypes();
			
			foreach (Type type in allTypes) {
				if (type.IsClass && !type.IsAbstract && !type.IsNested && type.GetInterface(typeof(INode).FullName) != null) {
					MethodInfo methodInfo = type.GetMethod("ToString", BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public);
					Assert.IsNotNull(methodInfo, "ToString() not found in " + type.FullName);
				}
			}
		}
		
		[Test]
		public void TestUnitTests()
		{
			Type[] allTypes = typeof(StructuralTest).Assembly.GetTypes();
			
			foreach (Type type in allTypes) {
				if (type.GetCustomAttributes(typeof(TestFixtureAttribute), true).Length > 0) {
					foreach (MethodInfo m in type.GetMethods()) {
						if (m.IsPublic && m.ReturnType == typeof(void) && m.GetParameters().Length == 0) {
							if (m.GetCustomAttributes(typeof(TestAttribute), true).Length == 0) {
								Assert.Fail(type.Name + "." + m.Name + " should have the [Test] attribute!");
							}
						}
					}
				}
			}
		}
		
//		[Test]
//		public void TestAcceptVisitorMethods()
//		{
//			Type[] allTypes = typeof(AbstractNode).Assembly.GetTypes();
//
//			foreach (Type type in allTypes) {
//				if (type.IsClass && !type.IsAbstract && type.GetInterface(typeof(INode).FullName) != null) {
//					MethodInfo methodInfo = type.GetMethod("AcceptVisitor", BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public);
//					Assertion.AssertNotNull("AcceptVisitor() not found in " + type.FullName, methodInfo);
//				}
//			}
//		}
		
		[Test]
		public void TestIDomVisitor()
		{
			Type[] allTypes = typeof(AbstractNode).Assembly.GetTypes();
			Type visitor = typeof(IDomVisitor);
			
			foreach (Type type in allTypes) {
				if (type.IsClass && !type.IsAbstract && !type.IsNested && type.GetInterface(typeof(INode).FullName) != null && !type.Name.StartsWith("Null")) {
					MethodInfo methodInfo = visitor.GetMethod("Visit" + type.Name, BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.ExactBinding, null, new Type[] {type, typeof(object)}, null);
					Assert.IsNotNull(methodInfo, "Visit with parameter " + type.FullName + " not found");
					Assert.AreEqual(2, methodInfo.GetParameters().Length);
					ParameterInfo first = methodInfo.GetParameters()[0];
					Assert.AreEqual(Char.ToLower(first.ParameterType.Name[0]) + first.ParameterType.Name.Substring(1), first.Name);
					
					ParameterInfo second = methodInfo.GetParameters()[1];
					Assert.AreEqual(typeof(System.Object), second.ParameterType);
					Assert.AreEqual("data", second.Name);
				}
			}
		}
		
		[Test]
		public void TestAbstractDomVisitorVisitor()
		{
			Type[] allTypes = typeof(AbstractNode).Assembly.GetTypes();
			Type visitor = typeof(AbstractDomVisitor);
			
			foreach (Type type in allTypes) {
				if (type.IsClass && !type.IsAbstract && !type.IsNested && type.GetInterface(typeof(INode).FullName) != null && !type.Name.StartsWith("Null")) {
					MethodInfo methodInfo = visitor.GetMethod("Visit" + type.Name, BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.ExactBinding, null, new Type[] {type, typeof(object)}, null);
					Assert.IsNotNull(methodInfo, "Visit with parameter " + type.FullName + " not found");
					
					Assert.AreEqual(2, methodInfo.GetParameters().Length);
					ParameterInfo first = methodInfo.GetParameters()[0];
					Assert.AreEqual(Char.ToLower(first.ParameterType.Name[0]) + first.ParameterType.Name.Substring(1), first.Name);
					
					ParameterInfo second = methodInfo.GetParameters()[1];
					Assert.AreEqual(typeof(System.Object), second.ParameterType);
					Assert.AreEqual("data", second.Name);
				}
			}
		}
	}
}