Add test for dynamic keyword with managed COM server

Author: elinor-fung

src/tests/Interop/COM/Dynamic/App.manifest

@@ -1,13 +1,22 @@
 <?xml version="1.0" encoding="utf-8"?>
 <assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
   <assemblyIdentity
-    type="win32" 
+    type="win32"
     name="COMDynamicTest"
     version="1.0.0.0" />
 
   <dependency>
     <dependentAssembly>
-      <!-- RegFree COM -->
+      <!-- RegFree COM to activate managed server -->
+      <assemblyIdentity
+          type="win32"
+          name="CoreShim.X"
+          version="1.0.0.0"/>
+    </dependentAssembly>
+  </dependency>
+  <dependency>
+    <dependentAssembly>
+      <!-- RegFree COM to activate native server-->
       <assemblyIdentity
           type="win32"
           name="DynamicTestServer.X"

src/tests/Interop/COM/Dynamic/CoreShim.X.manifest

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+
+<assemblyIdentity
+  type="win32"
+  name="CoreShim.X"
+  version="1.0.0.0" />
+
+<file name="CoreShim.dll">
+  <!-- ConsumeNETServerTesting -->
+  <comClass
+    clsid="{DE4ACF53-5957-4D31-8BE2-EA6C80683246}"
+    threadingModel="Both" />
+</file>
+
+</assembly>

src/tests/Interop/COM/Dynamic/Dynamic.csproj

@@ -3,6 +3,7 @@
     <OutputType>Exe</OutputType>
     <ApplicationManifest>App.manifest</ApplicationManifest>
     <IsManagedCOMClient>true</IsManagedCOMClient>
+    <UseManagedCOMServer>true</UseManagedCOMServer>
     <!-- This test is very slow under some GCStress variations, especially with COMPlus_HeapVerify=1, so disable it under GCStress to avoid test timeouts in the CI.
          Issue: https://github.com/dotnet/runtime/issues/39584
     -->
@@ -13,11 +14,23 @@
     <Compile Include="CollectionTest.cs" />
     <Compile Include="EventTest.cs" />
     <Compile Include="ParametersTest.cs" />
+    <Compile Include="NETServerTest.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="ServerGuids.cs" />
+    <Compile Include="../ServerContracts/ServerGuids.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="CoreShim.X.manifest">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="Server/CMakeLists.txt" />
     <ProjectReference Include="$(TestSourceDir)Common/CoreCLRTestLibrary/CoreCLRTestLibrary.csproj" />
+    <ProjectReference Include="../NETServer/NETServer.csproj">
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+      <OutputItemType>Content</OutputItemType>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </ProjectReference>
   </ItemGroup>
 </Project>

src/tests/Interop/COM/Dynamic/NETServerTest.cs

@@ -0,0 +1,42 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace Dynamic
+{
+    using System;
+    using System.Runtime.InteropServices;
+    using TestLibrary;
+
+    internal class NETServerTest
+    {
+        public void Run()
+        {
+            Console.WriteLine($"Running {nameof(NETServerTest)}");
+
+            // Initialize CoreShim and hostpolicymock
+            HostPolicyMock.Initialize(Environment.CurrentDirectory, null);
+            Environment.SetEnvironmentVariable("CORESHIM_COMACT_ASSEMBLYNAME", "NETServer");
+            Environment.SetEnvironmentVariable("CORESHIM_COMACT_TYPENAME", "ConsumeNETServerTesting");
+
+            using (HostPolicyMock.Mock_corehost_resolve_component_dependencies(
+                    0,
+                    string.Empty,
+                    string.Empty,
+                    string.Empty))
+            {
+                Type t = Type.GetTypeFromCLSID(Guid.Parse(Server.Contract.Guids.ConsumeNETServerTesting));
+                dynamic obj = Activator.CreateInstance(t);
+
+                try
+                {
+                    Assert.IsTrue(obj.EqualByCCW(obj));
+                    Assert.IsTrue(obj.NotEqualByRCW(obj));
+                }
+                finally
+                {
+                    obj.ReleaseResources();
+                }
+            }
+        }
+    }
+}

src/tests/Interop/COM/Dynamic/Program.cs

@@ -22,6 +22,7 @@ static int Main(string[] doNotUse)
                 new CollectionTest().Run();
                 new EventTest().Run();
                 new ParametersTest().Run();
+                new NETServerTest().Run();
             }
             catch (Exception e)
             {