dotnet-installer/TestAssets/TestProjects/TestAppWithEmptySln/App/App.csproj

<Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), testAsset.props))\testAsset.props" />

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <ProjectReference Include="..\Lib\Lib.csproj" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NETCore.App" Version="$(MicrosoftNETCoreAppPackageVersion)" />
  </ItemGroup>

</Project>