Add test for dotnet restore with -r, --os, and -a options

Co-authored-by: marcpopMSFT <[email protected]>

Author: Copilot

test/dotnet.Tests/CommandTests/Restore/GivenThatIWantToRestoreApp.cs

@@ -2,6 +2,7 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using Microsoft.DotNet.Tools.Test.Utilities;
+using System.Runtime.InteropServices;
 
 namespace Microsoft.DotNet.Restore.Test
 {
@@ -167,6 +168,44 @@ public void ItAcceptsArgumentsAfterProperties()
                  .Should()
                  .Pass();
         }
+        
+        /// <summary>
+        /// Tests for RID-specific restore options: -r/--runtime, --os, and -a/--arch
+        /// </summary>
+        [Theory]
+        [InlineData("-r", "linux-x64")]
+        [InlineData("--runtime", "win-x64")]
+        [InlineData("--os", "linux")]
+        [InlineData("-a", "arm64")]
+        [InlineData("--arch", "x64")]
+        [InlineData("--os", "linux", "-a", "arm64")]
+        public void ItRestoresWithRidSpecificOptions(params string[] ridOptions)
+        {
+            // Skip test for #24251
+            var testProject = new TestProject()
+            {
+                Name = "RestoreWithRidOptions",
+                TargetFrameworks = ToolsetInfo.CurrentTargetFramework,
+            };
+
+            testProject.PackageReferences.Add(new TestPackageReference("Newtonsoft.Json", ToolsetInfo.GetNewtonsoftJsonPackageVersion()));
+            
+            var testAsset = _testAssetsManager.CreateTestProject(testProject, identifier: string.Join("_", ridOptions));
+            
+            var rootPath = Path.Combine(testAsset.TestRoot, testProject.Name);
+
+            // Create the command with the RID-specific options
+            var restoreCommand = new DotnetRestoreCommand(Log)
+                .WithWorkingDirectory(rootPath)
+                .Execute(ridOptions);
+
+            // Verify that the command runs successfully
+            restoreCommand.Should().Pass();
+            
+            // Verify that assets file was created
+            var assetsFilePath = Path.Combine(rootPath, "obj", "project.assets.json");
+            File.Exists(assetsFilePath).Should().BeTrue();
+        }
 
         private static string[] HandleStaticGraphEvaluation(bool useStaticGraphEvaluation, string[] args) =>
             useStaticGraphEvaluation ?