diff --git a/src/JSInterop/Microsoft.JSInterop/src/Microsoft.JSInterop.csproj b/src/JSInterop/Microsoft.JSInterop/src/Microsoft.JSInterop.csproj
index bdfea26ad50..d91e8c2524e 100644
--- a/src/JSInterop/Microsoft.JSInterop/src/Microsoft.JSInterop.csproj
+++ b/src/JSInterop/Microsoft.JSInterop/src/Microsoft.JSInterop.csproj
@@ -7,4 +7,8 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
+  <ItemGroup>
+    <InternalsVisibleTo Include="Microsoft.JSInterop.Tests" />
+  </ItemGroup>
+
 </Project>
diff --git a/src/JSInterop/Microsoft.JSInterop/src/Properties/AssemblyInfo.cs b/src/JSInterop/Microsoft.JSInterop/src/Properties/AssemblyInfo.cs
deleted file mode 100644
index 07d0f1922f8..00000000000
--- a/src/JSInterop/Microsoft.JSInterop/src/Properties/AssemblyInfo.cs
+++ /dev/null
@@ -1,3 +0,0 @@
-using System.Runtime.CompilerServices;
-
-[assembly: InternalsVisibleTo("Microsoft.JSInterop.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d740c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc950abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0fc3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d872ad2bb")]
diff --git a/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj b/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj
index 5e88f44a3a4..a39b0821806 100644
--- a/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj
+++ b/src/JSInterop/Microsoft.JSInterop/test/Microsoft.JSInterop.Tests.csproj
@@ -5,7 +5,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Reference Include="Microsoft.JSInterop" />
+    <ProjectReference Include="../src/Microsoft.JSInterop.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="xunit.runner.json" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
 
 </Project>
diff --git a/src/JSInterop/Microsoft.JSInterop/test/xunit.runner.json b/src/JSInterop/Microsoft.JSInterop/test/xunit.runner.json
new file mode 100644
index 00000000000..0f2ad9f7698
--- /dev/null
+++ b/src/JSInterop/Microsoft.JSInterop/test/xunit.runner.json
@@ -0,0 +1,3 @@
+{
+  "shadowCopy": true
+}
diff --git a/src/Localization/Localization/src/Microsoft.Extensions.Localization.csproj b/src/Localization/Localization/src/Microsoft.Extensions.Localization.csproj
index c639cad144f..8a820ac7b93 100644
--- a/src/Localization/Localization/src/Microsoft.Extensions.Localization.csproj
+++ b/src/Localization/Localization/src/Microsoft.Extensions.Localization.csproj
@@ -17,4 +17,8 @@
     <Reference Include="Microsoft.Extensions.Logging.Abstractions" />
   </ItemGroup>
 
+  <ItemGroup>
+    <InternalsVisibleTo Include="Microsoft.Extensions.Localization.Tests" />
+  </ItemGroup>
+
 </Project>
diff --git a/src/Localization/Localization/src/Properties/AssemblyInfo.cs b/src/Localization/Localization/src/Properties/AssemblyInfo.cs
deleted file mode 100644
index 3e297b801e9..00000000000
--- a/src/Localization/Localization/src/Properties/AssemblyInfo.cs
+++ /dev/null
@@ -1,6 +0,0 @@
-// Copyright (c) .NET Foundation. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
-
-using System.Runtime.CompilerServices;
-
-[assembly: InternalsVisibleTo("Microsoft.Extensions.Localization.Tests, PublicKey=0024000004800000940000000602000000240000525341310004000001000100f33a29044fa9d740c9b3213a93e57c84b472c84e0b8a0e1ae48e67a9f8f6de9d5f7f3d52ac23e48ac51801f1dc950abe901da34d2a9e3baadb141a17c77ef3c565dd5ee5054b91cf63bb3c6ab83f72ab3aafe93d0fc3c2348b764fafb0b1c0733de51459aeab46580384bf9d74c4e28164b7cde247f891ba07891c9d872ad2bb")]