Merge pull request #4160 from tijoytom/master

Windows specific Marshal APIs test.

21 files changed, 1545 insertions, 0 deletions

diff --git a/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/GetNativeVariantForObject.cs b/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/GetNativeVariantForObject.cs
new file mode 100644
index 0000000000..89ec450fc7
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/GetNativeVariantForObject.cs
@@ -0,0 +1,99 @@
+using System;
+using System.IO;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using CoreFXTestLibrary;
+
+public class GetNativeVariantForObjectTest
+{   
+    internal struct Variant
+    {
+        public ushort vt;
+        public ushort wReserved1;
+        public ushort wReserved2;
+        public ushort wReserved3;
+        public IntPtr bstrVal;
+        public IntPtr pRecInfo;
+    }    
+    
+    public static void NullParameter()
+    {
+        Assert.Throws<ArgumentNullException>(() => Marshal.GetNativeVariantForObject(new object(),IntPtr.Zero));
+        Assert.Throws<ArgumentNullException>(() => Marshal.GetNativeVariantForObject<int>(1, IntPtr.Zero));
+    }
+    
+    public static void EmptyObject()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject(null, pNative);
+        object o = Marshal.GetObjectForNativeVariant(pNative);
+        Assert.AreEqual(null, o);
+    }
+    
+    public static void PrimitiveType()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<ushort>(99, pNative);
+        ushort actual = Marshal.GetObjectForNativeVariant<ushort>(pNative);
+        Assert.AreEqual(99, actual);
+    }
+    
+    public static void Char()
+    {
+        // GetNativeVariantForObject supports char, but internally recognizes it the same as ushort
+        // because the native variant type uses mscorlib type VarEnum to store what type it contains.
+        // To get back the original char, use GetObjectForNativeVariant<ushort> and cast to char.
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<char>('a', pNative);
+        ushort actual = Marshal.GetObjectForNativeVariant<ushort>(pNative);
+        char actualChar = (char)actual;
+        Assert.AreEqual('a', actual);
+    }
+    
+    public static void CharNegative()
+    {
+        // While GetNativeVariantForObject supports taking chars, GetObjectForNativeVariant will
+        // never return a char. The internal type is ushort, as mentioned above. This behavior
+        // is the same on ProjectN and Desktop CLR.
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<char>('a', pNative);
+        Assert.Throws<InvalidCastException>(() =>
+        {
+            char actual = Marshal.GetObjectForNativeVariant<char>(pNative);
+            Assert.AreEqual('a', actual);
+        });
+    }
+        
+    public static void StringType()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<string>("99", pNative);
+        string actual = Marshal.GetObjectForNativeVariant<string>(pNative);
+        Assert.AreEqual("99", actual);
+    }
+        
+    public static void DoubleType()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<double>(3.14, pNative);
+        double actual = Marshal.GetObjectForNativeVariant<double>(pNative);
+        Assert.AreEqual(3.14, actual);
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+        EmptyObject();
+        PrimitiveType();
+        Char();
+        CharNegative();
+        StringType();
+        DoubleType();
+        return 100;
+    }
+}
diff --git a/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/GetNativeVariantForObject.csproj b/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/GetNativeVariantForObject.csproj
new file mode 100644
index 0000000000..c470b76894
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/GetNativeVariantForObject.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>GetNativeVariantForObject</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="*.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>    
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/project.json b/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/project.json
new file mode 100644
index 0000000000..f1fce28499
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetNativeVariantForObject/project.json
@@ -0,0 +1,35 @@
+{
+  "dependencies": {
+   "Microsoft.NETCore.Platforms": "1.0.1-rc2-23816",
+    "System.Collections": "4.0.10",
+    "System.Collections.NonGeneric": "4.0.1-rc2-23816",
+    "System.Collections.Specialized": "4.0.1-rc2-23816",
+    "System.ComponentModel": "4.0.1-rc2-23816",
+    "System.Console": "4.0.0-rc2-23816",
+    "System.Diagnostics.Process": "4.1.0-rc2-23816",
+    "System.Globalization": "4.0.10",
+    "System.Globalization.Calendars": "4.0.0",
+    "System.IO": "4.0.10",
+    "System.IO.FileSystem": "4.0.0",
+    "System.IO.FileSystem.Primitives": "4.0.0",
+    "System.Linq": "4.0.1-rc2-23816",
+    "System.Linq.Queryable": "4.0.1-rc2-23816",
+    "System.Reflection": "4.0.10",
+    "System.Reflection.Primitives": "4.0.0",
+    "System.Runtime": "4.1.0-rc2-23816",
+    "System.Runtime.Extensions": "4.0.10",
+    "System.Runtime.Handles": "4.0.0",
+    "System.Runtime.InteropServices": "4.1.0-rc2-23816",
+    "System.Runtime.Loader": "4.0.0-rc2-23816",
+    "System.Text.Encoding": "4.0.10",
+    "System.Threading": "4.0.10",
+    "System.Threading.Thread": "4.0.0-rc2-23816",
+    "System.Xml.ReaderWriter": "4.0.11-rc2-23816",
+    "System.Xml.XDocument": "4.0.11-rc2-23816",
+    "System.Xml.XmlDocument": "4.0.1-rc2-23816",
+    "System.Xml.XmlSerializer": "4.0.11-rc2-23816"
+  },
+  "frameworks": {
+    "dnxcore50": {}
+  }
+}
diff --git a/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/GetObjectForNativeVariant.cs b/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/GetObjectForNativeVariant.cs
new file mode 100644
index 0000000000..5880a74518
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/GetObjectForNativeVariant.cs
@@ -0,0 +1,118 @@
+using System;
+using System.IO;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using CoreFXTestLibrary;
+
+public class GetObjectForNativeVariantTest 
+{  
+    [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.GetObjectForNativeVariant(IntPtr.Zero));
+        Assert.Throws<ArgumentNullException>(() => Marshal.GetObjectForNativeVariant<int>(IntPtr.Zero));
+    }
+    
+    public static void Decimal()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject(3.14m, pNative);
+        decimal d = Marshal.GetObjectForNativeVariant<decimal>(pNative);
+        Assert.AreEqual(3.14m, d);
+    }
+        
+    public static void PrimitiveType()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<ushort>(99, pNative);
+        ushort actual = Marshal.GetObjectForNativeVariant<ushort>(pNative);
+        Assert.AreEqual(99, actual);
+    }
+        
+    public static void StringType()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<string>("99", pNative);
+        string actual = Marshal.GetObjectForNativeVariant<string>(pNative);
+        Assert.AreEqual("99", actual);
+    }
+        
+    public static void DoubleType()
+    {
+        Variant v = new Variant();
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<double>(3.14, pNative);
+        double actual = Marshal.GetObjectForNativeVariant<double>(pNative);
+        Assert.AreEqual(3.14, actual);
+    }
+        
+    public static void IUnknownType()
+    {
+        Variant v = new Variant();
+        IntPtr pObj = Marshal.GetIUnknownForObject(new object());
+        IntPtr pNative = Marshal.AllocHGlobal(Marshal.SizeOf(v));
+        Marshal.GetNativeVariantForObject<IntPtr>(pObj, pNative);
+        IntPtr pActualObj = Marshal.GetObjectForNativeVariant<IntPtr>(pNative);
+        Assert.AreEqual(pObj, pActualObj);
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+        //IUnknownType();
+        DoubleType();
+        StringType();
+        PrimitiveType();
+        Decimal();
+        NullParameter();
+        return 100;
+    }
+}
diff --git a/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/GetObjectForNativeVariant.csproj b/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/GetObjectForNativeVariant.csproj
new file mode 100644
index 0000000000..5bf4fa6f52
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/GetObjectForNativeVariant.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>GetObjectForNativeVariant</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="*.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>    
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/project.json b/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/project.json
new file mode 100644
index 0000000000..f1fce28499
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetObjectForNativeVariant/project.json
@@ -0,0 +1,35 @@
+{
+  "dependencies": {
+   "Microsoft.NETCore.Platforms": "1.0.1-rc2-23816",
+    "System.Collections": "4.0.10",
+    "System.Collections.NonGeneric": "4.0.1-rc2-23816",
+    "System.Collections.Specialized": "4.0.1-rc2-23816",
+    "System.ComponentModel": "4.0.1-rc2-23816",
+    "System.Console": "4.0.0-rc2-23816",
+    "System.Diagnostics.Process": "4.1.0-rc2-23816",
+    "System.Globalization": "4.0.10",
+    "System.Globalization.Calendars": "4.0.0",
+    "System.IO": "4.0.10",
+    "System.IO.FileSystem": "4.0.0",
+    "System.IO.FileSystem.Primitives": "4.0.0",
+    "System.Linq": "4.0.1-rc2-23816",
+    "System.Linq.Queryable": "4.0.1-rc2-23816",
+    "System.Reflection": "4.0.10",
+    "System.Reflection.Primitives": "4.0.0",
+    "System.Runtime": "4.1.0-rc2-23816",
+    "System.Runtime.Extensions": "4.0.10",
+    "System.Runtime.Handles": "4.0.0",
+    "System.Runtime.InteropServices": "4.1.0-rc2-23816",
+    "System.Runtime.Loader": "4.0.0-rc2-23816",
+    "System.Text.Encoding": "4.0.10",
+    "System.Threading": "4.0.10",
+    "System.Threading.Thread": "4.0.0-rc2-23816",
+    "System.Xml.ReaderWriter": "4.0.11-rc2-23816",
+    "System.Xml.XDocument": "4.0.11-rc2-23816",
+    "System.Xml.XmlDocument": "4.0.1-rc2-23816",
+    "System.Xml.XmlSerializer": "4.0.11-rc2-23816"
+  },
+  "frameworks": {
+    "dnxcore50": {}
+  }
+}
diff --git a/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/GetObjectsForNativeVariants.cs b/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/GetObjectsForNativeVariants.cs
new file mode 100644
index 0000000000..36ab12283b
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/GetObjectsForNativeVariants.cs
@@ -0,0 +1,85 @@
+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;
+    }
+}
diff --git a/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/GetObjectsForNativeVariants.csproj b/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/GetObjectsForNativeVariants.csproj
new file mode 100644
index 0000000000..d4d7fc372b
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/GetObjectsForNativeVariants.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>GetObjectsForNativeVariants</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="*.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>    
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/project.json b/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/project.json
new file mode 100644
index 0000000000..f1fce28499
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/GetObjectsForNativeVariants/project.json
@@ -0,0 +1,35 @@
+{
+  "dependencies": {
+   "Microsoft.NETCore.Platforms": "1.0.1-rc2-23816",
+    "System.Collections": "4.0.10",
+    "System.Collections.NonGeneric": "4.0.1-rc2-23816",
+    "System.Collections.Specialized": "4.0.1-rc2-23816",
+    "System.ComponentModel": "4.0.1-rc2-23816",
+    "System.Console": "4.0.0-rc2-23816",
+    "System.Diagnostics.Process": "4.1.0-rc2-23816",
+    "System.Globalization": "4.0.10",
+    "System.Globalization.Calendars": "4.0.0",
+    "System.IO": "4.0.10",
+    "System.IO.FileSystem": "4.0.0",
+    "System.IO.FileSystem.Primitives": "4.0.0",
+    "System.Linq": "4.0.1-rc2-23816",
+    "System.Linq.Queryable": "4.0.1-rc2-23816",
+    "System.Reflection": "4.0.10",
+    "System.Reflection.Primitives": "4.0.0",
+    "System.Runtime": "4.1.0-rc2-23816",
+    "System.Runtime.Extensions": "4.0.10",
+    "System.Runtime.Handles": "4.0.0",
+    "System.Runtime.InteropServices": "4.1.0-rc2-23816",
+    "System.Runtime.Loader": "4.0.0-rc2-23816",
+    "System.Text.Encoding": "4.0.10",
+    "System.Threading": "4.0.10",
+    "System.Threading.Thread": "4.0.0-rc2-23816",
+    "System.Xml.ReaderWriter": "4.0.11-rc2-23816",
+    "System.Xml.XDocument": "4.0.11-rc2-23816",
+    "System.Xml.XmlDocument": "4.0.1-rc2-23816",
+    "System.Xml.XmlSerializer": "4.0.11-rc2-23816"
+  },
+  "frameworks": {
+    "dnxcore50": {}
+  }
+}
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.cs b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.cs
new file mode 100644
index 0000000000..eb36714802
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.cs
@@ -0,0 +1,134 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+
+public class ReadWriteByteTest
+{
+    private byte[] TestValues = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, byte.MaxValue };
+
+    private void NullValueTests()
+    {
+        byte value;
+
+        try
+        {
+            value = Marshal.ReadByte(IntPtr.Zero);
+          
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException")
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            value = Marshal.ReadByte(IntPtr.Zero, 2);           
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") 
+            {                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteByte(IntPtr.Zero, TestValues[0]);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteByte(IntPtr.Zero, 2, TestValues[0]);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException") {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+    }
+
+    private void ReadWriteRoundTripTests()
+    {
+        int sizeOfArray = Marshal.SizeOf(TestValues[0]) * TestValues.Length;
+
+        IntPtr ptr = Marshal.AllocCoTaskMem(sizeOfArray);
+        Marshal.WriteByte(ptr, TestValues[0]);
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            Marshal.WriteByte(ptr, i * Marshal.SizeOf(TestValues[0]), TestValues[i]);
+        }
+
+        byte value = Marshal.ReadByte(ptr);
+        if (!value.Equals(TestValues[0]))
+        {
+            throw new Exception("Failed round trip ReadWrite test.");
+        }
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            value = Marshal.ReadByte(ptr, i * Marshal.SizeOf(TestValues[0]));
+            if (!value.Equals(TestValues[i]))
+            {
+                throw new Exception("Failed round trip ReadWrite test.");
+            }
+        }
+        Marshal.FreeCoTaskMem(ptr);
+    }
+
+    public void RunTests()
+    {        
+        NullValueTests();
+        ReadWriteRoundTripTests();
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+       new ReadWriteByteTest().RunTests();
+       return 100;
+    }
+}
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.csproj b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.csproj
new file mode 100644
index 0000000000..d6ef04307a
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteByte.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>ReadWriteByte</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="ReadWriteByte.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt16.cs b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt16.cs
new file mode 100644
index 0000000000..7ba83961b3
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt16.cs
@@ -0,0 +1,144 @@
+using System;
+using System.IO;
+using System.Reflection;
+using System.Security;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+public class ReadWriteInt16Test
+{
+    private short[] TestValues = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, short.MaxValue };
+
+    private void NullValueTests()
+    {
+        short value;
+
+        try
+        {
+            value = Marshal.ReadInt16(IntPtr.Zero);          
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+               
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            value = Marshal.ReadInt16(IntPtr.Zero, 2);
+
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteInt16(IntPtr.Zero, TestValues[0]);            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteInt16(IntPtr.Zero, 2, TestValues[0]);            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+    }
+
+    private void ReadWriteRoundTripTests()
+    {
+        int sizeOfArray = Marshal.SizeOf(TestValues[0]) * TestValues.Length;
+
+        IntPtr ptr = Marshal.AllocCoTaskMem(sizeOfArray);
+
+
+        Marshal.WriteInt16(ptr, TestValues[0]);
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            Marshal.WriteInt16(ptr, i * Marshal.SizeOf(TestValues[0]), TestValues[i]);
+        }
+
+
+        short value = Marshal.ReadInt16(ptr);
+        if (!value.Equals(TestValues[0]))
+        {
+            throw new Exception("Failed round trip ReadWrite test.");
+
+        }
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            value = Marshal.ReadInt16(ptr, i * Marshal.SizeOf(TestValues[0]));
+            if (!value.Equals(TestValues[i]))
+            {
+                throw new Exception("Failed round trip ReadWrite test.");
+
+            }
+        }
+        Marshal.FreeCoTaskMem(ptr);
+    }
+
+    public void RunTests()
+    {        
+        NullValueTests();        
+        ReadWriteRoundTripTests();        
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+        new ReadWriteInt16Test().RunTests();
+        return 100;
+    }
+
+}
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt16.csproj b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt16.csproj
new file mode 100644
index 0000000000..5985d8e622
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt16.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>ReadWriteInt16</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="ReadWriteInt16.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt32.cs b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt32.cs
new file mode 100644
index 0000000000..be9408a6c9
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt32.cs
@@ -0,0 +1,142 @@
+using System;
+using System.IO;
+using System.Reflection;
+using System.Security;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+public class ReadWriteInt32Test 
+{
+    private int[] TestValues = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, int.MaxValue };
+
+    private void NullValueTests()
+    {
+        int value;
+
+        try
+        {
+            value = Marshal.ReadInt32(IntPtr.Zero);
+           
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+           
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            value = Marshal.ReadInt32(IntPtr.Zero, 2);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+            
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+            
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteInt32(IntPtr.Zero, TestValues[0]);            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteInt32(IntPtr.Zero, 2, TestValues[0]);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+
+            }
+            else
+            {
+                throw e;
+            }
+        }
+    }
+
+    private void ReadWriteRoundTripTests()
+    {
+        int sizeOfArray = Marshal.SizeOf(TestValues[0]) * TestValues.Length;
+
+        IntPtr ptr = Marshal.AllocCoTaskMem(sizeOfArray);
+
+        Marshal.WriteInt32(ptr, TestValues[0]);
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            Marshal.WriteInt32(ptr, i * Marshal.SizeOf(TestValues[0]), TestValues[i]);
+        }
+
+        int value = Marshal.ReadInt32(ptr);
+        if (!value.Equals(TestValues[0]))
+        {
+            throw new Exception("Failed round trip ReadWrite test.");            
+        }
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            value = Marshal.ReadInt32(ptr, i * Marshal.SizeOf(TestValues[0]));
+            if (!value.Equals(TestValues[i]))
+            {
+                throw new Exception("Failed round trip ReadWrite test.");                
+            }
+        }
+        Marshal.FreeCoTaskMem(ptr);
+    }
+
+    public void RunTests()
+    {        
+        NullValueTests();       
+        ReadWriteRoundTripTests();
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+        new ReadWriteInt32Test().RunTests();
+        return 100;
+    }
+
+}
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt32.csproj b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt32.csproj
new file mode 100644
index 0000000000..eb98e042ae
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt32.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>ReadWriteInt32</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="ReadWriteInt32.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt64.cs b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt64.cs
new file mode 100644
index 0000000000..029cdd534f
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt64.cs
@@ -0,0 +1,149 @@
+using System;
+using System.IO;
+using System.Reflection;
+using System.Security;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+
+public class ReadWriteInt64Test 
+{
+    private long[] TestValues = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, long.MaxValue };
+
+    private void NullValueTests()
+    {
+        long value;
+
+        try
+        {
+            value = Marshal.ReadInt64(IntPtr.Zero);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") 
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            value = Marshal.ReadInt64(IntPtr.Zero, 2);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") 
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteInt64(IntPtr.Zero, TestValues[0]);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") 
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteInt64(IntPtr.Zero, 2, TestValues[0]);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+    }
+
+    private void ReadWriteRoundTripTests()
+    {
+        int sizeOfArray = Marshal.SizeOf(TestValues[0]) * TestValues.Length;
+
+        IntPtr ptr = Marshal.AllocCoTaskMem(sizeOfArray);
+
+
+        Marshal.WriteInt64(ptr, TestValues[0]);
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            Marshal.WriteInt64(ptr, i * Marshal.SizeOf(TestValues[0]), TestValues[i]);
+        }
+
+
+
+        long value = Marshal.ReadInt64(ptr);
+        if (!value.Equals(TestValues[0]))
+        {
+            throw new Exception("Failed round trip ReadWrite test.");
+        }
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            value = Marshal.ReadInt64(ptr, i * Marshal.SizeOf(TestValues[0]));
+            if (!value.Equals(TestValues[i]))
+            {
+                throw new Exception("Failed round trip ReadWrite test.");
+
+            }
+        }
+
+        Marshal.FreeCoTaskMem(ptr);
+    }
+
+    public void RunTests()
+    {       
+        NullValueTests();
+        ReadWriteRoundTripTests();             
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+        new ReadWriteInt64Test().RunTests();
+        return 100;
+    }
+
+}
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt64.csproj b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt64.csproj
new file mode 100644
index 0000000000..d9883d55f2
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteInt64.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>ReadWriteInt64</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="ReadWriteInt64.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteIntPtr.cs b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteIntPtr.cs
new file mode 100644
index 0000000000..abd0a69b19
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteIntPtr.cs
@@ -0,0 +1,155 @@
+using System;
+using System.IO;
+using System.Reflection;
+using System.Security;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+
+public class ReadWriteIntPtrTest
+{
+    private IntPtr[] TestValues;
+
+    private void NullValueTests()
+    {
+        IntPtr value;
+
+        try
+        {
+            value = Marshal.ReadIntPtr(IntPtr.Zero);
+           
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            value = Marshal.ReadIntPtr(IntPtr.Zero, 2);
+            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+                
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") // ProjectN throws NullReferenceException
+            {
+                
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteIntPtr(IntPtr.Zero, TestValues[0]);            
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") 
+            {
+
+            }
+            else
+            {
+                throw e;
+            }
+        }
+
+        try
+        {
+            Marshal.WriteIntPtr(IntPtr.Zero, 2, TestValues[0]);        
+        }
+        catch (Exception e)
+        {
+            if (e.GetType().FullName == "System.AccessViolationException")
+            {
+
+            }
+            else if (e.GetType().FullName == "System.NullReferenceException") 
+            {
+
+            }
+            else
+            {
+                throw e;
+            }
+        }
+    }
+
+    private void ReadWriteRoundTripTests()
+    {
+        int sizeOfArray = Marshal.SizeOf(TestValues[0]) * TestValues.Length;
+
+        IntPtr ptr = Marshal.AllocCoTaskMem(sizeOfArray);
+
+
+        Marshal.WriteIntPtr(ptr, TestValues[0]);
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            Marshal.WriteIntPtr(ptr, i * Marshal.SizeOf(TestValues[0]), TestValues[i]);
+        }
+
+
+        IntPtr value = Marshal.ReadIntPtr(ptr);
+        if (!value.Equals(TestValues[0]))
+        {
+            throw new Exception("Failed round trip ReadWrite test.");
+        }
+
+        for (int i = 1; i < TestValues.Length; i++)
+        {
+            value = Marshal.ReadIntPtr(ptr, i * Marshal.SizeOf(TestValues[0]));
+            if (!value.Equals(TestValues[i]))
+            {
+                throw new Exception("Failed round trip ReadWrite test.");
+
+            }
+        }
+
+        Marshal.FreeCoTaskMem(ptr);
+    }
+
+    public void RunTests()
+    {
+        NullValueTests();
+        ReadWriteRoundTripTests();
+    }
+
+    public void Initialize()
+    {        
+
+        TestValues = new IntPtr[10];
+        for (int i = 0; i < TestValues.Length; i++)
+            TestValues[i] = new IntPtr(i);        
+    }
+
+    public static int Main(String[] unusedArgs)
+    {
+        ReadWriteIntPtrTest test = new ReadWriteIntPtrTest();
+        test.Initialize();
+        test.RunTests();
+        return 100;
+    }
+
+}
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteIntPtr.csproj b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteIntPtr.csproj
new file mode 100644
index 0000000000..1afed52338
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/ReadWriteIntPtr.csproj
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>ReadWriteIntPtr</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{F1E66554-8C8E-4141-85CF-D0CD6A0CD0B0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+    <DefineConstants>$(DefineConstants);STATIC</DefineConstants>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="ReadWriteIntPtr.cs" />
+    <Compile Include="..\..\Common\Assertion.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="project.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Common\CoreCLRTestLibrary\CoreCLRTestLibrary.csproj">
+      <Project>{c8c0dc74-fac4-45b1-81fe-70c4808366e0}</Project>
+      <Name>CoreCLRTestLibrary</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+</Project>
diff --git a/tests/src/Interop/MarshalAPI/ReadWrite/project.json b/tests/src/Interop/MarshalAPI/ReadWrite/project.json
new file mode 100644
index 0000000000..f1fce28499
--- /dev/null
+++ b/tests/src/Interop/MarshalAPI/ReadWrite/project.json
@@ -0,0 +1,35 @@
+{
+  "dependencies": {
+   "Microsoft.NETCore.Platforms": "1.0.1-rc2-23816",
+    "System.Collections": "4.0.10",
+    "System.Collections.NonGeneric": "4.0.1-rc2-23816",
+    "System.Collections.Specialized": "4.0.1-rc2-23816",
+    "System.ComponentModel": "4.0.1-rc2-23816",
+    "System.Console": "4.0.0-rc2-23816",
+    "System.Diagnostics.Process": "4.1.0-rc2-23816",
+    "System.Globalization": "4.0.10",
+    "System.Globalization.Calendars": "4.0.0",
+    "System.IO": "4.0.10",
+    "System.IO.FileSystem": "4.0.0",
+    "System.IO.FileSystem.Primitives": "4.0.0",
+    "System.Linq": "4.0.1-rc2-23816",
+    "System.Linq.Queryable": "4.0.1-rc2-23816",
+    "System.Reflection": "4.0.10",
+    "System.Reflection.Primitives": "4.0.0",
+    "System.Runtime": "4.1.0-rc2-23816",
+    "System.Runtime.Extensions": "4.0.10",
+    "System.Runtime.Handles": "4.0.0",
+    "System.Runtime.InteropServices": "4.1.0-rc2-23816",
+    "System.Runtime.Loader": "4.0.0-rc2-23816",
+    "System.Text.Encoding": "4.0.10",
+    "System.Threading": "4.0.10",
+    "System.Threading.Thread": "4.0.0-rc2-23816",
+    "System.Xml.ReaderWriter": "4.0.11-rc2-23816",
+    "System.Xml.XDocument": "4.0.11-rc2-23816",
+    "System.Xml.XmlDocument": "4.0.1-rc2-23816",
+    "System.Xml.XmlSerializer": "4.0.11-rc2-23816"
+  },
+  "frameworks": {
+    "dnxcore50": {}
+  }
+}
diff --git a/tests/testsUnsupportedOutsideWindows.txt b/tests/testsUnsupportedOutsideWindows.txt
index b00af44418..e001656868 100644
--- a/tests/testsUnsupportedOutsideWindows.txt
+++ b/tests/testsUnsupportedOutsideWindows.txt
@@ -305,3 +305,6 @@ managed/Compilation/Compilation/Compilation.sh
 Regressions/coreclr/0584/Test584/Test584.sh
 GC/Regressions/v2.0-beta2/437657/437657/437657.sh
 Interop/MarshalAPI/IUnknown/IUnknownTest/IUnknownTest.sh
+Interop/MarshalAPI/GetNativeVariantForObject/GetNativeVariantForObject/GetNativeVariantForObject.sh
+Interop/MarshalAPI/GetObjectForNativeVariant/GetObjectForNativeVariant/GetObjectForNativeVariant.sh
+Interop/MarshalAPI/GetObjectsForNativeVariants/GetObjectsForNativeVariants/GetObjectsForNativeVariants.sh
\ No newline at end of file