diff --git a/WheelWizard.Test/WheelWizard.Test.csproj b/WheelWizard.Test/WheelWizard.Test.csproj
index a7fc2452..d93b1d86 100644
--- a/WheelWizard.Test/WheelWizard.Test.csproj
+++ b/WheelWizard.Test/WheelWizard.Test.csproj
@@ -9,6 +9,18 @@
         <IsTestProject>true</IsTestProject>
     </PropertyGroup>
 
+    <PropertyGroup Condition="'$(RuntimeIdentifier)' == 'win-x64'">
+        <DefineConstants>$(DefineConstants);WINDOWS</DefineConstants>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(RuntimeIdentifier)' == 'linux-x64' or '$(RuntimeIdentifier)' == 'linux-arm64'">
+        <DefineConstants>$(DefineConstants);LINUX</DefineConstants>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(RuntimeIdentifier)' == 'osx-arm64' or '$(RuntimeIdentifier)' == 'osx-x64'">
+        <DefineConstants>$(DefineConstants);MACOS</DefineConstants>
+    </PropertyGroup>
+
     <ItemGroup>
         <PackageReference Include="coverlet.collector" Version="6.0.4">
             <PrivateAssets>all</PrivateAssets>
diff --git a/WheelWizard.sln b/WheelWizard.sln
index 59571e64..a6b477b0 100644
--- a/WheelWizard.sln
+++ b/WheelWizard.sln
@@ -14,8 +14,8 @@ Global
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{DF73A1D9-B01E-4826-A0F3-A8105E66A931}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{DF73A1D9-B01E-4826-A0F3-A8105E66A931}.Release|Any CPU.Build.0 = Release|Any CPU
-		{DF73A1D9-B01E-4826-A0F3-A8105E66A931}.Debug|Any CPU.ActiveCfg = Debug-Windows|Any CPU
-		{DF73A1D9-B01E-4826-A0F3-A8105E66A931}.Debug|Any CPU.Build.0 = Debug-Windows|Any CPU
+		{DF73A1D9-B01E-4826-A0F3-A8105E66A931}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DF73A1D9-B01E-4826-A0F3-A8105E66A931}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C2A6FF37-2E6B-4683-A8DA-AD965E1CC55A}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C2A6FF37-2E6B-4683-A8DA-AD965E1CC55A}.Release|Any CPU.Build.0 = Release|Any CPU
 		{C2A6FF37-2E6B-4683-A8DA-AD965E1CC55A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU