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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.IO;
using System.Reflection;
using System.Security;
using System.Runtime.InteropServices;
using System.Collections.Generic;
using CoreFXTestLibrary;
public class TestClass
{
public int value;
public string str;
public TestClass()
{
value = int.MaxValue;
str = "Test String";
}
public override string ToString()
{
return str + value;
}
}
public class IUnknownMarshalingTest
{
[DllImport(@"IUnknownNative", CallingConvention = CallingConvention.Cdecl)]
private static extern bool Marshal_IUnknown([In]IntPtr ptr);
private object[] TestObjects;
public void GetIUnknownForObjectTest()
{
try
{
//test null
IntPtr nullPtr = Marshal.GetIUnknownForObject(null);
}
catch (ArgumentNullException) { }
foreach (object obj in TestObjects)
{
IntPtr ptr = IntPtr.Zero;
try
{
ptr = Marshal.GetIUnknownForObject(obj);
if (!Marshal_IUnknown(ptr))
{
throw new Exception("Failure on native side. Ref counts do not work as expected");
}
}
finally
{
if (ptr != IntPtr.Zero)
Marshal.Release(ptr);
}
}
}
public void GetComInterfaceForObjectTest()
{
//test null
IntPtr nullPtr = Marshal.GetComInterfaceForObject(null, typeof(object));
if (nullPtr != IntPtr.Zero)
throw new Exception("A valid ptr was returned for null object.");
foreach (object obj in TestObjects)
{
IntPtr ptr = IntPtr.Zero;
try
{
ptr = Marshal.GetComInterfaceForObject(obj, typeof(object));
if (!Marshal_IUnknown(ptr))
{
throw new Exception("Failure on native side. Ref counts do not work as expected");
}
}
finally
{
if (ptr != IntPtr.Zero)
Marshal.Release(ptr);
}
}
}
public void GetComInterfaceForObjectQueryInterfaceTest()
{
IntPtr nullPtr = Marshal.GetComInterfaceForObject(null, typeof(object), CustomQueryInterfaceMode.Allow);
if (nullPtr != IntPtr.Zero)
throw new Exception("A valid ptr was returned for null object.");
foreach (object obj in TestObjects)
{
IntPtr ptr = IntPtr.Zero;
ptr = Marshal.GetComInterfaceForObject(obj, typeof(object), CustomQueryInterfaceMode.Allow);
try
{
if (!Marshal_IUnknown(ptr))
{
throw new Exception("Failure on native side. Ref counts do not work as expected");
}
}
finally
{
if (ptr != IntPtr.Zero)
Marshal.Release(ptr);
}
}
}
public void GetObjectForIUnknownTest()
{
try
{
//test IntPtr.Zero
Object nullObj = Marshal.GetObjectForIUnknown(IntPtr.Zero);
}
catch (ArgumentNullException) { }
foreach (object obj in TestObjects)
{
IntPtr ptr = IntPtr.Zero;
try
{
ptr = Marshal.GetIUnknownForObject(obj);
Object tmpObj = Marshal.GetObjectForIUnknown(ptr);
//compare the new object reference with the original object, they should point to the same underlying object
if (!object.ReferenceEquals(obj, tmpObj))
throw new Exception("GetObjectForIUnknown returned a different object. Original: " + obj + ", New: " + tmpObj);
}
finally
{
if (ptr != IntPtr.Zero)
Marshal.Release(ptr);
}
}
}
public void GetUniqueObjectForIUnknownTest()
{
//test IntPtr.Zero
Object nullObj = Marshal.GetUniqueObjectForIUnknown(IntPtr.Zero);
if (nullObj != null)
throw new Exception("Object returned for IntPtr.Zero is not null.");
foreach (object obj in TestObjects)
{
IntPtr ptr = IntPtr.Zero;
object tmpObj = null;
try
{
ptr = Marshal.GetIUnknownForObject(obj);
tmpObj = Marshal.GetUniqueObjectForIUnknown(ptr);
//compare the new object reference with the original object, they should point to differnet objects
if (object.ReferenceEquals(obj, tmpObj))
throw new Exception("GetUniqueObjectForIUnknown returned the original object");
//The value should be the same
if (!obj.Equals(tmpObj))
throw new Exception("GetUniqueObjectForIUnknown returned an object with different value. Original: " + obj + ", New: " + tmpObj);
}
finally
{
if (tmpObj != null)
Marshal.ReleaseComObject(tmpObj);
if (ptr != IntPtr.Zero)
Marshal.Release(ptr);
}
}
}
public bool RunTests()
{
Initialize();
GetIUnknownForObjectTest();
GetObjectForIUnknownTest();
return true;
}
public bool Initialize()
{
TestObjects = new object[7];
TestObjects[0] = 1; //int
TestObjects[1] = 'a'; //char
TestObjects[2] = false; //bool
TestObjects[3] = "string"; //string
TestObjects[4] = new TestClass(); //Object of type TestClass
TestObjects[5] = new List<int>(); //Projected Type
TestObjects[6] = new Nullable<int>(2); //Nullable Type
return true;
}
public static int Main(String[] unusedArgs)
{
IUnknownMarshalingTest testObj = new IUnknownMarshalingTest();
testObj.Initialize();
testObj.RunTests();
return 100;
}
}
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