Attempt to fix AppVeyor

SabreTools.Test/SabreTools.Test.csproj

@@ -2,8 +2,6 @@
 
   <PropertyGroup>
     <TargetFrameworks>netcoreapp3.1;net5.0</TargetFrameworks>
-    <Configurations>Debug;Release</Configurations>
-    <Platforms>AnyCPU;x64</Platforms>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 

appveyor.yml

@@ -36,6 +36,11 @@ after_build:
 - 7z a RombaSharp_netcoreapp3.1.zip netcoreapp3.1\*
 - 7z a RombaSharp_net5.0.zip net5.0\*
 
+# testing step
+test:
+  assemblies:
+    - '**\*.Test.dll'
+
 # artifact linking
 artifacts:
 - path: SabreTools\bin\Debug\SabreTools_netcoreapp3.1.zip