Index: DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/Deltares.DamEngine.Interface.Tests.csproj
===================================================================
diff -u -r3444 -r3875
--- DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/Deltares.DamEngine.Interface.Tests.csproj	(.../Deltares.DamEngine.Interface.Tests.csproj)	(revision 3444)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/Deltares.DamEngine.Interface.Tests.csproj	(.../Deltares.DamEngine.Interface.Tests.csproj)	(revision 3875)
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\packages\NUnit.3.13.3\build\NUnit.props" Condition="Exists('..\packages\NUnit.3.13.3\build\NUnit.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -36,9 +37,8 @@
       <HintPath>..\packages\CompareNETObjects.3.09.0.0\lib\net45\KellermanSoftware.Compare-NET-Objects.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="nunit.framework, Version=2.6.2.12296, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>..\..\lib\NUnit\nunit.framework.dll</HintPath>
+    <Reference Include="nunit.framework, Version=3.13.3.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
+      <HintPath>..\packages\NUnit.3.13.3\lib\net45\nunit.framework.dll</HintPath>
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
@@ -72,6 +72,7 @@
     <None Include="..\Copying.AGPL.licenseheader">
       <Link>Copying.AGPL.licenseheader</Link>
     </None>
+    <None Include="App.config" />
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
@@ -85,6 +86,12 @@
   </ItemGroup>
   <ItemGroup />
   <Import Project="$(ProjectDir)..\build\Deltares.DamEngine.Version.targets" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105.The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\NUnit.3.13.3\build\NUnit.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\NUnit.3.13.3\build\NUnit.props'))" />
+  </Target>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">