Add full framework tests on windows

test/Velopack.Tests/RuntimeInfoTests.cs

@@ -14,7 +14,9 @@ namespace Velopack.Tests
         public void NugetVersionAgreesWithNbgv()
         {
             var args = new List<string> { "get-version", "-v", "NuGetPackageVersion" };
-            var current = new ProcessStartInfo("nbgv", args).Output(5000);
+            var psi = new ProcessStartInfo("nbgv");
+            psi.AppendArgumentListSafe(args, out var _);
+            var current = psi.Output(3000);
             Assert.Equal(current, VelopackRuntimeInfo.VelopackNugetVersion.ToString());
         }
 

test/Velopack.Tests/RuntimeTests.cs

@@ -1,4 +1,5 @@
-using Velopack.Windows;
+using System.Net.Http;
+using Velopack.Windows;
 
 namespace Velopack.Tests
 {

test/Velopack.Tests/Velopack.Tests.csproj

@@ -1,9 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
 
-  <PropertyGroup>
-    <TargetFrameworks>net8.0</TargetFrameworks>
-  </PropertyGroup>
+  <Choose>
+    <When Condition="$([MSBuild]::IsOSPlatform('Windows'))">
+      <PropertyGroup>
+        <TargetFrameworks>net8.0;net48</TargetFrameworks>
+      </PropertyGroup>
+    </When>
+    <Otherwise>
+      <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+      </PropertyGroup>
+    </Otherwise>
+  </Choose>
 
   <ItemGroup>
     <PackageReference Include="System.IO.Packaging" Version="8.0.0" />