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using System;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;
using CoreFXTestLibrary;
public class GetObjectsForNativeVariantsTest
{
[StructLayout(LayoutKind.Sequential)]
public struct Record {
private IntPtr _record;
private IntPtr _recordInfo;
}
[StructLayout(LayoutKind.Explicit)]
public struct UnionTypes {
[FieldOffset(0)] internal SByte _i1;
[FieldOffset(0)] internal Int16 _i2;
[FieldOffset(0)] internal Int32 _i4;
[FieldOffset(0)] internal Int64 _i8;
[FieldOffset(0)] internal Byte _ui1;
[FieldOffset(0)] internal UInt16 _ui2;
[FieldOffset(0)] internal UInt32 _ui4;
[FieldOffset(0)] internal UInt64 _ui8;
[FieldOffset(0)] internal Int32 _int;
[FieldOffset(0)] internal UInt32 _uint;
[FieldOffset(0)] internal Single _r4;
[FieldOffset(0)] internal Double _r8;
[FieldOffset(0)] internal Int64 _cy;
[FieldOffset(0)] internal double _date;
[FieldOffset(0)] internal IntPtr _bstr;
[FieldOffset(0)] internal IntPtr _unknown;
[FieldOffset(0)] internal IntPtr _dispatch;
[FieldOffset(0)] internal IntPtr _pvarVal;
[FieldOffset(0)] internal IntPtr _byref;
[FieldOffset(0)] internal Record _record;
}
[StructLayout(LayoutKind.Sequential)]
internal struct TypeUnion
{
public ushort vt;
public ushort wReserved1;
public ushort wReserved2;
public ushort wReserved3;
public UnionTypes _unionTypes;
}
[StructLayout(LayoutKind.Explicit)]
internal struct Variant
{
[FieldOffset(0)] public TypeUnion m_Variant;
[FieldOffset(0)] public decimal m_decimal;
}
public static void NullParameter()
{
Assert.Throws<ArgumentNullException>(() => Marshal.GetObjectsForNativeVariants(IntPtr.Zero, 10));
Assert.Throws<ArgumentOutOfRangeException>(() => Marshal.GetObjectsForNativeVariants<int>(new IntPtr(100), -1));
}
public static void UshortType()
{
Variant v = new Variant();
IntPtr pNative = Marshal.AllocHGlobal(2 * Marshal.SizeOf(v));
Marshal.GetNativeVariantForObject<ushort>(99, pNative);
Marshal.GetNativeVariantForObject<ushort>(100, pNative +Marshal.SizeOf(v));
ushort[] actual = Marshal.GetObjectsForNativeVariants<ushort>(pNative,2);
Assert.AreEqual(99, actual[0]);
Assert.AreEqual(100, actual[1]);
Marshal.FreeHGlobal(pNative);
}
public static int Main(String[] args)
{
UshortType();
NullParameter();
return 100;
}
}
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