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// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// 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
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// DEALINGS IN THE SOFTWARE.

using System;
using ICSharpCode.NRefactory.Semantics;
using ICSharpCode.NRefactory.TypeSystem;
using NUnit.Framework;

namespace ICSharpCode.NRefactory.CSharp.Resolver
{
	[TestFixture]
	public class ResolveAtLocationTests : ResolverTestBase
	{
		[Test]
		public void UsingDeclaration()
		{
			Assert.IsNull(ResolveAtLocation("usi$ng System;"));
		}
		
		[Test]
		public void InsideClassBody()
		{
			Assert.IsNull(ResolveAtLocation("class Test { $ }"));
		}
		
		[Test]
		public void UsingDeclarationNamespace()
		{
			var rr = ResolveAtLocation<NamespaceResolveResult>("using $System;");
			Assert.AreEqual("System", rr.NamespaceName);
		}
		
		[Test]
		public void CatchClauseVariable()
		{
			var rr = ResolveAtLocation<LocalResolveResult>("using System; public class A { void M() { try { } catch (Exception e$x) { } } }");
			Assert.AreEqual("ex", rr.Variable.Name);
			Assert.AreEqual("System.Exception", rr.Type.FullName);
		}
		
		[Test]
		public void MethodInvocation()
		{
			var rr = ResolveAtLocation<CSharpInvocationResolveResult>(@"using System;
class A { void M() {
	Console.W$riteLine(1);
}}");
			Assert.AreEqual("System.Console.WriteLine", rr.Member.FullName);
			Assert.AreEqual("System.Int32", rr.Member.Parameters[0].Type.FullName);
		}
		
		[Test]
		public void ImplicitlyTypedVariable()
		{
			var rr = ResolveAtLocation<TypeResolveResult>(@"using System;
class A { void M() {
	v$ar x = Environment.TickCount;
}}");
			Assert.AreEqual("System.Int32", rr.Type.FullName);
		}
		
		[Test]
		public void BaseCtorCall()
		{
			var rr = ResolveAtLocation<CSharpInvocationResolveResult>(@"using System;
class A { public A() : ba$se() {} }");
			Assert.AreEqual("System.Object..ctor", rr.Member.FullName);
		}
		
		[Test]
		public void Field()
		{
			var rr = ResolveAtLocation<MemberResolveResult>("public class A { int te$st; }");
			Assert.AreEqual("test", rr.Member.Name);
		}
		
		[Test]
		public void Field1InLineWithTwoFields()
		{
			var rr = ResolveAtLocation<MemberResolveResult>("public class A { int te$st, test2; }");
			Assert.AreEqual("test", rr.Member.Name);
		}
		
		[Test]
		public void Field2InLineWithTwoFields()
		{
			var rr = ResolveAtLocation<MemberResolveResult>("public class A { int test, te$st2; }");
			Assert.AreEqual("test2", rr.Member.Name);
		}
		
		[Test]
		public void Event()
		{
			var rr = ResolveAtLocation<MemberResolveResult>("public class A { event EventHandler Te$st; }");
			Assert.AreEqual("Test", rr.Member.Name);
		}
		
		[Test]
		public void Event1InLineWithTwoEvents()
		{
			var rr = ResolveAtLocation<MemberResolveResult>("public class A { event EventHandler Te$st, Test2; }");
			Assert.AreEqual("Test", rr.Member.Name);
		}
		
		[Test]
		public void Event2InLineWithTwoEvents()
		{
			var rr = ResolveAtLocation<MemberResolveResult>("public class A { event EventHandler Test, Te$st2; }");
			Assert.AreEqual("Test2", rr.Member.Name);
		}
		
		[Test]
		public void Indexer()
		{
			var rr = ResolveAtLocation<CSharpInvocationResolveResult>(
				"using System.Collections.Generic;" +
				"public class A { int M(List<int> a) { return a$[1]; } }");
			Assert.AreEqual(EntityType.Indexer, rr.Member.EntityType);
		}

		[Test]
		public void TestBug5114()
		{
			var rr = ResolveAtLocation<MemberResolveResult>(
				@"using System;

namespace Bug5114 
{
	class Test
	{
		Test oLongPressRecognizer;

		public void AddTarget (Action target)
		{}

		public void HandleLongPressGesture ()
		{
		}

		public Test ()
		{
			this.oLongPressRecognizer.AddTarget (this.$HandleLongPressGesture);
		}
	}
}
");
			Assert.AreEqual("HandleLongPressGesture", rr.Member.Name);
		}

		[Test]
		public void ArrayInitializer()
		{
			Assert.IsNull(ResolveAtLocation(
@"using System.Collections.Generic;
class Foo { 
	void Bar() 
	{
		var o = new Dictionary<int,int> () { 
			{1$, 2 },
			{1, 2 },
			{1, 2 },
			{1, 2 }
		}; 
	} 
}"));
		}

		[Test]
		public void TestBug6758()
		{
			var rr = ResolveAtLocation<TypeResolveResult>(
				@"using System;                                                                   

namespace TestCrash                                                             
{                                                                               
        class A                                                                 
        {                                                                       

        }                                                                       

        class B<T> : T where T: $A                                               
        {                                                                       

        }                                                                       
}
");
			Assert.AreEqual("A", rr.Type.Name);
		}

		
		[Test]
		public void CreateDelegateFromOverloadedMethod()
		{
			var rr = ResolveAtLocation<MemberResolveResult>(
				@"using System;                                                                   
class Test {
	public void Method() {}
	public void Method(int a) {}
	
	public Test() {
		Action a = Meth$od;
	}
}
");
			Assert.AreEqual("Method", rr.Member.Name);
			Assert.AreEqual(0, ((IMethod)rr.Member).Parameters.Count);
		}
		
		[Test]
		public void ExplicitlyCreateDelegateFromOverloadedMethod()
		{
			var rr = ResolveAtLocation<MemberResolveResult>(
				@"using System;                                                                   
class Test {
	public void Method() {}
	public void Method(int a) {}
	
	public Test() {
		Action a = new Action(Meth$od);
	}
}
");
			Assert.AreEqual("Method", rr.Member.Name);
			Assert.AreEqual(0, ((IMethod)rr.Member).Parameters.Count);
		}

		[Test]
		public void MemberTypeTarget()
		{
			var rr = ResolveAtLocation<TypeResolveResult>(
				@"using System;                                                                   
class Test {
	E$nvironment.SpecialFolder folder;
}
");
			Assert.AreEqual("System.Environment", rr.Type.FullName);
		}
	}
}