Switch to using ToolsetInfo.CurrentTargetFramework since I wasn't aware that existed in the TestFramework.

Author: MiYanni

test/EndToEnd.Tests/GivenWindowsApp.cs

@@ -29,7 +29,7 @@ public void ItCanBuildAndRun(string targetPlatformVersion)
             project.Root.Element(ns + "PropertyGroup")
                 .Add(new XElement(ns + "TargetPlatformVersion", targetPlatformVersion));
             project.Root.Element(ns + "PropertyGroup")
-                .Element(ns + "TargetFramework").Value = TargetFrameworkHelper.CurrentTfm;
+                .Element(ns + "TargetFramework").Value = ToolsetInfo.CurrentTargetFramework;
             project.Save(projectPath);
 
             new BuildCommand(testInstance)

test/EndToEnd.Tests/ProjectBuildTests.cs

@@ -24,7 +24,7 @@ public void ItCanNewRestoreBuildRunCleanMSBuildProject()
             var ns = project.Root.Name.Namespace;
 
             project.Root.Element(ns + "PropertyGroup")
-                .Element(ns + "TargetFramework").Value = TargetFrameworkHelper.CurrentTfm;
+                .Element(ns + "TargetFramework").Value = ToolsetInfo.CurrentTargetFramework;
             project.Save(projectPath);
 
             new RestoreCommand(Log, projectPath)
@@ -67,7 +67,7 @@ public void ItCanRunAnAppUsingTheWebSdk()
 
             project.Root.Attribute("Sdk").Value = "Microsoft.NET.Sdk.Web";
             project.Root.Element(ns + "PropertyGroup")
-                .Element(ns + "TargetFramework").Value = TargetFrameworkHelper.CurrentTfm;
+                .Element(ns + "TargetFramework").Value = ToolsetInfo.CurrentTargetFramework;
             project.Save(projectPath);
 
             new BuildCommand(Log, projectPath)

test/EndToEnd.Tests/Utilities/SupportedNetCoreAppVersions.cs

@@ -7,8 +7,6 @@ namespace EndToEnd.Tests.Utilities
 {
     public static class TargetFrameworkHelper
     {
-        public const string CurrentTfm = "net9.0";
-
         private static Version _firstNetAppVersion = new Version(5, 0);
 
         public static IEnumerable<string> GetNetAppTargetFrameworks(IEnumerable<string> versions) =>