//
// MarshalAsAttributeTest.cs
//
// Authors:
//  Alexander Köplinger (alkpli@microsoft.com)
//
// (c) 2017 Microsoft
//
// 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 System;
using System.Threading;
using System.Reflection;
using System.Reflection.Emit;
using System.Runtime.InteropServices;
using NUnit.Framework;

namespace MonoTests.System.Runtime.InteropServices {

	/// <summary>
	/// Summary description for MarshalAsAttributeTest.
	/// </summary>
	[TestFixture]
	public class MarshalAsAttributeTest
	{
#if !MOBILE
		private AssemblyBuilder dynAssembly;
		AssemblyName dynAsmName = new AssemblyName ();
		MarshalAsAttribute attr;
		
		public MarshalAsAttributeTest ()
		{
			//create a dynamic assembly with the required attribute
			//and check for the validity

			dynAsmName.Name = "TestAssembly";

			dynAssembly = Thread.GetDomain ().DefineDynamicAssembly (
				dynAsmName,AssemblyBuilderAccess.Run
				);

			// Set the required Attribute of the assembly.
			Type attribute = typeof (MarshalAsAttribute);
			ConstructorInfo ctrInfo = attribute.GetConstructor (
				new Type [] { typeof (UnmanagedType) }
				);
			CustomAttributeBuilder attrBuilder =
				new CustomAttributeBuilder (ctrInfo, new object [1] { UnmanagedType.LPWStr });
			dynAssembly.SetCustomAttribute (attrBuilder);
			object [] attributes = dynAssembly.GetCustomAttributes (true);
			attr = attributes [0] as MarshalAsAttribute;
		}

		[Test]
		public void MarshalAsTest ()
		{
			Assert.AreEqual (
				attr.Value,
				UnmanagedType.LPWStr, "#1");
		}

		[Test]
		public void TypeIdTest ()
		{
			Assert.AreEqual (
				attr.TypeId,
				typeof (MarshalAsAttribute), "#1"
				);
		}

		[Test]
		public void MatchTestForTrue ()
		{
			Assert.AreEqual (
				attr.Match (attr),
				true, "#1");
		}

		[Test]
		public void MatchTestForFalse ()
		{
			Assert.AreEqual (
				attr.Match (new MarshalAsAttribute (UnmanagedType.Bool)),
				false, "#1");
		}
#endif
		[Test]
		public void CtorTest ()
		{
			var a = new MarshalAsAttribute (UnmanagedType.Bool);
			Assert.AreEqual (UnmanagedType.Bool, a.Value);

			a = new MarshalAsAttribute ((short)UnmanagedType.Bool);
			Assert.AreEqual (UnmanagedType.Bool, a.Value);
		}

		[Test]
		public void FieldsTest ()
		{
			var a = new MarshalAsAttribute (UnmanagedType.Bool);

			Assert.Null (a.MarshalCookie);
			Assert.Null (a.MarshalType);
			Assert.Null (a.MarshalTypeRef);
			Assert.Null (a.SafeArrayUserDefinedSubType);
			Assert.AreEqual ((UnmanagedType)0, a.ArraySubType);
			Assert.AreEqual (VarEnum.VT_EMPTY, a.SafeArraySubType);
			Assert.AreEqual (0, a.SizeConst);
			Assert.AreEqual (0, a.IidParameterIndex);
			Assert.AreEqual (0, a.SizeParamIndex);
		}
	}
}