Added test folder identifier for ItDoesNotIncludeWindowsOnlyProjectTemplates and ItCanCreateItemTemplateWithProjectRestriction. Reverted GetTestDestinationDirectoryPath's hash algorithm. Skipped It_does_not_download_desktop_targeting_packs_on_unix with link to associated issue.

Author: MiYanni

test/EndToEnd.Tests/GivenUnixPlatform.cs

@@ -10,7 +10,7 @@ public class GivenUnixPlatform(ITestOutputHelper log) : SdkTest(log)
         [InlineData("winforms")]
         public void ItDoesNotIncludeWindowsOnlyProjectTemplates(string template)
         {
-            var directory = _testAssetsManager.CreateTestDirectory();
+            var directory = _testAssetsManager.CreateTestDirectory(identifier: template);
 
             new DotnetNewCommand(Log)
                 .WithWorkingDirectory(directory.Path)

test/EndToEnd.Tests/GivenWeWantToRequireWindowsForDesktopApps.cs

@@ -7,7 +7,7 @@ namespace EndToEnd.Tests
 {
     public class GivenWeWantToRequireWindowsForDesktopApps(ITestOutputHelper log) : SdkTest(log)
     {
-        [PlatformSpecificFact(TestPlatforms.Linux | TestPlatforms.OSX | TestPlatforms.FreeBSD)]
+        [PlatformSpecificFact(TestPlatforms.Linux | TestPlatforms.OSX | TestPlatforms.FreeBSD, Skip = "https://github.com/dotnet/sdk/issues/42230")]
         public void It_does_not_download_desktop_targeting_packs_on_unix()
         {
             var testProjectCreator = new TestProjectCreator()

test/EndToEnd.Tests/ProjectBuildTests.cs

@@ -263,7 +263,7 @@ public void ItCanCreateItemTemplateWithProjectRestriction(string templateName, s
                 { "VB", ".vb" }
             };
 
-            var directory = InstantiateProjectTemplate("classlib", language, withNoRestore: false);
+            var directory = InstantiateProjectTemplate(templateName, language, withNoRestore: false);
             string projectDirectory = directory.Path;
             string expectedItemName = $"TestItem_{templateName}";
 

test/Microsoft.NET.TestFramework/TestAssetsManager.cs

@@ -187,7 +187,8 @@ public static string GetTestDestinationDirectoryPath(
             // We need to ensure the directory name isn't over 24 characters in length
             if (directoryName.Length > 24)
             {
-                var hash = GetTruncatedHash(directoryName.ToString(), HashAlgorithmName.SHA256);
+                using var sha256 = SHA256.Create();
+                var hash = sha256.ComputeHash(Encoding.UTF8.GetBytes(directoryName.ToString()));
 
                 directoryName = directoryName.Remove(13, directoryName.Length - 13)
                                              .Append("---");
@@ -212,25 +213,6 @@ public static string GetTestDestinationDirectoryPath(
 #endif
 
             return directoryPath;
-
-            // From: https://github.com/dotnet/arcade/blob/3b7e3a1a6d626eb51c5528987c1af484a98e4b5c/src/Microsoft.DotNet.Build.Tasks.Workloads/src/Utils.cs#L22
-            static string GetTruncatedHash(string value, HashAlgorithmName hashName)
-            {
-                byte[] bytes = Encoding.UTF8.GetBytes(value);
-#pragma warning disable SYSLIB0045 // Cryptographic factory methods accepting an algorithm name are obsolete. Use the parameterless Create factory method on the algorithm type instead.
-                HashAlgorithm algorithm = HashAlgorithm.Create(hashName.Name);
-#pragma warning restore SYSLIB0045
-                StringBuilder sb = new();
-
-                foreach (byte b in algorithm.ComputeHash(bytes))
-                {
-                    sb.Append(b.ToString("x2"));
-                }
-
-                string result = sb.ToString();
-
-                return result.Substring(0, 32);
-            }
         }
     }
 }