csharp/src/Google.Protobuf.Test.TestProtos/Google.Protobuf.Test.TestProtos.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <!--
    This TestProtos project is kept separate from the original test project for many reasons.
    It allows us to make sure code can compile on a separate compiler version, different frameworks,
    and without the internal visibility from the test project (all of which have caused issues in the past).
  -->
  <PropertyGroup>
    <TargetFrameworks>net45;netstandard1.1;netstandard2.0</TargetFrameworks>
    <LangVersion>3.0</LangVersion>
    <AssemblyOriginatorKeyFile>../../keys/Google.Protobuf.snk</AssemblyOriginatorKeyFile>
    <SignAssembly>true</SignAssembly>
    <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
    <IsPackable>False</IsPackable>
  </PropertyGroup>

  <!-- Needed for the net45 build to work on Unix. See https://github.com/dotnet/designs/pull/33 -->
  <ItemGroup>
    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0-preview.2" PrivateAssets="All" />
  </ItemGroup>
  
  <ItemGroup>
    <ProjectReference Include="..\Google.Protobuf\Google.Protobuf.csproj" />
  </ItemGroup>

</Project>