Fix tests

Author: onyxmaster

test/Microsoft.TestCommon/Microsoft.TestCommon.csproj

@@ -24,6 +24,7 @@
         Condition=" '$(TargetFrameworkIdentifier)' == '.NETFramework' " />
 
     <PackageReference Include="Moq" Version="4.18.4" />
+    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.3" />
     <PackageReference Include="xunit.abstractions" Version="2.0.3" />
     <PackageReference Include="xunit.assert" Version="2.4.2" />
     <PackageReference Include="xunit.extensibility.core" Version="2.4.2" />

test/System.Web.WebPages.Test/System.Web.WebPages.Test.csproj

@@ -29,6 +29,12 @@
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
     <Reference Include="System.Data.Linq" />
+    <Reference Include="System.Runtime.CompilerServices.Unsafe, Version=6.0.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\System.Runtime.CompilerServices.Unsafe.6.1.2\lib\net462\System.Runtime.CompilerServices.Unsafe.dll</HintPath>
+    </Reference>
+    <Reference Include="System.Threading.Tasks.Extensions, Version=4.2.4.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\System.Threading.Tasks.Extensions.4.6.3\lib\net462\System.Threading.Tasks.Extensions.dll</HintPath>
+    </Reference>
     <Reference Include="System.Web" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
       <HintPath>..\..\packages\xunit.abstractions.2.0.3\lib\net35\xunit.abstractions.dll</HintPath>

test/System.Web.WebPages.Test/packages.config

@@ -2,6 +2,8 @@
 <packages>
   <package id="Castle.Core" version="5.1.1" targetFramework="net462" />
   <package id="Moq" version="4.18.4" targetFramework="net462" />
+  <package id="System.Runtime.CompilerServices.Unsafe" version="6.1.2" targetFramework="net472" />
+  <package id="System.Threading.Tasks.Extensions" version="4.6.3" targetFramework="net472" />
   <package id="xunit" version="2.4.2" targetFramework="net462" />
   <package id="xunit.abstractions" version="2.0.3" targetFramework="net462" />
   <package id="xunit.analyzers" version="1.1.0" targetFramework="net462" />