grpc/src/csharp/Grpc.Tools.Tests/Grpc.Tools.Tests.csproj

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  <Import Project="..\Grpc.Core\SourceLink.csproj.include" />

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    <!-- Use Mono reference assemblies in SDK build: https://github.com/dotnet/sdk/issues/335.
         This is a different approach than used in Grpc.Core/Common.csproj.include because
         the workaround used there doesn't seem to be working for Microsoft.Build.* assemblies -->
    <FrameworkPathOverride Condition="Exists('/usr/lib/mono/4.5-api')">/usr/lib/mono/4.5-api</FrameworkPathOverride>
    <FrameworkPathOverride Condition="Exists('/usr/local/lib/mono/4.5-api')">/usr/local/lib/mono/4.5-api</FrameworkPathOverride>
    <FrameworkPathOverride Condition="Exists('/Library/Frameworks/Mono.framework/Versions/Current/lib/mono/4.5-api')">/Library/Frameworks/Mono.framework/Versions/Current/lib/mono/4.5-api</FrameworkPathOverride>
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    <ProjectReference Include="..\Grpc.Tools\Grpc.Tools.csproj" />
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  <ItemGroup>
    <PackageReference Include="Moq" Version="4.8.3" />
    <PackageReference Include="NUnit; NUnitLite" Version="3.10.1" />
    <PackageReference Include="System.Runtime.InteropServices.RuntimeInformation" Version="4.3.0" />
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    <DefineConstants>$(DefineConstants);NETCORE</DefineConstants>
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  <ItemGroup Condition=" '$(TargetFramework)' == 'net45' ">
    <Reference Include="Microsoft.Build.Framework; Microsoft.Build.Utilities.v4.0" />
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  <ItemGroup Condition=" '$(TargetFramework)' != 'net45' ">
    <PackageReference Include="Microsoft.Build.Framework; Microsoft.Build.Utilities.Core" Version="15.6.*" />
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  <!-- Groups below is a hack to allow the test to run under Mono Framework build.
       ========================================================================== -->

  <!-- Mono unfortunately comes with broken Microsoft.Build.* assemblies installed in
       the GAC, but fortunately searches for runtime assemblies in a different order
       than Windows CLR host: the GAC assemblies have the lowest search priority, (see
       https://www.mono-project.com/docs/advanced/assemblies-and-the-gac/), not the
       highest as is in Windows (documented at
       https://docs.microsoft.com/dotnet/framework/deployment/how-the-runtime-locates-assemblies).
       To run the tests under Mono, we need correct assemblies in the same directory as
       the test executable. Correct versions are in the MSBuild directory under Mono. -->
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    <None Include="$(_MSBuildAssemblyPath)/Microsoft.Build.Framework.dll;
                   $(_MSBuildAssemblyPath)/Microsoft.Build.Utilities.v4.0.dll;
                   $(_MSBuildAssemblyPath)/Microsoft.Build.Utilities.Core.dll"
          CopyToOutputDirectory="Always" Visible="false" />
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         we do not want that, as they are not valid as reference assemblies (the version of
         Microsoft.Build.Utilities.v4.0 is a pure facade for Microsoft.Build.Utilities.Core,
         and does not define any types at all). Exclude them from assembly resolution. See
         https://github.com/Microsoft/msbuild/blob/50639058f/documentation/wiki/ResolveAssemblyReference.md -->
    <AssemblySearchPaths>{HintPathFromItem};{TargetFrameworkDirectory};{RawFileName}</AssemblySearchPaths>
    <!-- Mono knows better where its MSBuild is. -->
    <_MSBuildAssemblyPath Condition=" '$(MSBuildRuntimeType)' != 'Core' "
                          >$(MSBuildToolsPath)</_MSBuildAssemblyPath>
    <!-- Under dotnet, make the best guess we can. -->
    <_MSBuildAssemblyPath Condition=" '$(MSBuildRuntimeType)' == 'Core' "
                          >$(FrameworkPathOverride)/../msbuild/$(MSBuildToolsVersion)/bin</_MSBuildAssemblyPath>
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