mono/mcs/class/corlib/Test/System.Reflection/CustomAttributeDataTest.cs

//
// System.Reflection.CustomAttributeData Test Cases
//
// Authors:
//  Zoltan Varga ([email protected])
//
// (c) 2003 Ximian, Inc. (http://www.ximian.com)
// Copyright (C) 2004-2008 Novell, Inc (http://www.novell.com)
//
// 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;
using System.Reflection;
using System.Collections.Generic;
using System.Runtime.InteropServices;

namespace MonoTests.System.Reflection
{
	class Attr : Attribute {
		public Attr (byte[] arr) {
		}
	}

	[TestFixture]
	public class CustomAttributeDataTest
	{
		[MarshalAs (UnmanagedType.LPStr)]
		[NonSerialized]
		public string fieldDecoratedWithPseudoCustomAttributes = "test";

		[Attr (new byte [] { 1, 2 })]
		public void MethodWithAttr () {
		}

		public void MethodWithParamDecoratedWithPseudoCustomAttributes ([Optional, In, Out, MarshalAs (UnmanagedType.LPStr)] String s)
		{
		}

		[return: MarshalAs (UnmanagedType.LPStr)]
		public string MethodWithReturnValueDecoratedWithMarshalAs ()
		{
			return "test";
		}

		[Test]
		[Category ("MobileNotWorking")] // #10263
		public void Arrays () {
			IList<CustomAttributeData> cdata = CustomAttributeData.GetCustomAttributes (typeof (CustomAttributeDataTest).GetMethod ("MethodWithAttr"));
			Assert.AreEqual (1, cdata.Count);
			CustomAttributeTypedArgument arg = cdata [0].ConstructorArguments [0];
			Assert.IsTrue (typeof (IList<CustomAttributeTypedArgument>).IsAssignableFrom (arg.Value.GetType ()));
			IList<CustomAttributeTypedArgument> arr = (IList<CustomAttributeTypedArgument>)arg.Value;
			Assert.AreEqual (2, arr.Count);
			Assert.AreEqual (typeof (byte), arr [0].ArgumentType);
			Assert.AreEqual (1, arr [0].Value);
			Assert.AreEqual (typeof (byte), arr [1].ArgumentType);
			Assert.AreEqual (2, arr [1].Value);
		}
        
		[Test]
		public void ParameterIncludesPseudoCustomAttributesData ()
		{
			var methodInfo = typeof (CustomAttributeDataTest).GetMethod ("MethodWithParamDecoratedWithPseudoCustomAttributes");
			var paramInfo = methodInfo.GetParameters () [0];
			var customAttributesData = CustomAttributeData.GetCustomAttributes (paramInfo);

			Assert.AreEqual (4, customAttributesData.Count);

			var inAttributeData = customAttributesData [0];
			var optionalAttributeData = customAttributesData [1];
			var outAttributeData = customAttributesData [2];
			var marshalAsAttributeData = customAttributesData [3];

			var marshalAsAttributeCtorArg = marshalAsAttributeData.ConstructorArguments [0];

			Assert.AreEqual (typeof (InAttribute), inAttributeData.AttributeType);
			Assert.AreEqual (typeof (OptionalAttribute), optionalAttributeData.AttributeType);
			Assert.AreEqual (typeof (OutAttribute), outAttributeData.AttributeType);

			Assert.AreEqual (typeof (MarshalAsAttribute), marshalAsAttributeData.AttributeType);
			Assert.AreEqual (typeof (UnmanagedType), marshalAsAttributeCtorArg.ArgumentType);
			Assert.AreEqual ((int)UnmanagedType.LPStr, marshalAsAttributeCtorArg.Value);
		}

		[Test]
		public void FieldIncludesPseudoCustomAttributesData ()
		{
			var fieldInfo = typeof (CustomAttributeDataTest).GetField ("fieldDecoratedWithPseudoCustomAttributes");
			var customAttributesData = CustomAttributeData.GetCustomAttributes (fieldInfo);

			Assert.AreEqual (2, customAttributesData.Count);

			var nonSerializedAttributeData = customAttributesData [0];
			var marshalAsAttributeData = customAttributesData [1];
			var marshalAsAttributeDataCtorArg = marshalAsAttributeData.ConstructorArguments [0];

			Assert.AreEqual (typeof (NonSerializedAttribute), nonSerializedAttributeData.AttributeType);
			Assert.AreEqual (typeof (MarshalAsAttribute), marshalAsAttributeData.AttributeType);
			Assert.AreEqual (typeof (UnmanagedType), marshalAsAttributeDataCtorArg.ArgumentType);
			Assert.AreEqual ((int)UnmanagedType.LPStr, marshalAsAttributeDataCtorArg.Value);
		}

		[Test]
		public void MethodIncludesMarshalAsAttributeData ()
		{
			var methodInfo = typeof (CustomAttributeDataTest).GetMethod ("MethodWithReturnValueDecoratedWithMarshalAs");
			var paramInfo = (ParameterInfo)methodInfo.ReturnTypeCustomAttributes;
			var customAttributesData = CustomAttributeData.GetCustomAttributes (paramInfo);
			var marshalAsAttributeData = customAttributesData [0];
			var ctorArg = marshalAsAttributeData.ConstructorArguments [0];

			Assert.AreEqual (1, customAttributesData.Count);
			Assert.AreEqual (typeof (MarshalAsAttribute), marshalAsAttributeData.AttributeType);
			Assert.AreEqual (typeof (UnmanagedType), ctorArg.ArgumentType);
			Assert.AreEqual ((int)UnmanagedType.LPStr, ctorArg.Value);
		}
	}
}