Use ISolutionManager from NuGetApexTestService instead of PowerShell commands

Fetch ISolutionManager via VisualStudioObjectProviders.GetComponentModelService
(matching the IVsPackageInstaller pattern) and subscribe to
AfterNuGetCacheUpdated in C# with ManualResetEventSlim.

Agent-Logs-Url: https://github.com/NuGet/NuGet.Client/sessions/89d1f6cd-cac2-473e-a612-1f47b026fb2b

Co-authored-by: nkolev92 <[email protected]>

Author: Copilot

test/NuGet.Tests.Apex/NuGet.Tests.Apex/Apex/NuGetApexTestService.cs

@@ -18,6 +18,7 @@
 using Microsoft.VisualStudio.Shell.Interop;
 using Microsoft.VisualStudio.Shell.ServiceBroker;
 using NuGet.Console.TestContract;
+using NuGet.PackageManagement;
 using NuGet.PackageManagement.UI.TestContract;
 using NuGet.SolutionRestoreManager;
 using NuGet.Versioning;
@@ -56,6 +57,11 @@ protected internal IVsSolutionRestoreStatusProvider SolutionRestoreStatusProvide
 
         protected internal IVsPathContextProvider2 PathContextProvider2 => VisualStudioObjectProviders.GetComponentModelService<IVsPathContextProvider2>();
 
+        /// <summary>
+        /// Gets the NuGet ISolutionManager
+        /// </summary>
+        protected internal ISolutionManager SolutionManager => VisualStudioObjectProviders.GetComponentModelService<ISolutionManager>();
+
         /// <summary>
         /// Wait for all nominations and auto restore to complete.
         /// This uses an Action to log since the xunit logger is not fully serializable.

test/NuGet.Tests.Apex/NuGet.Tests.Apex/NuGetEndToEndTests/NetCoreProjectTestCase.cs

@@ -1,9 +1,11 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Test.Apex.VisualStudio.Solution;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using NuGet.PackageManagement;
 
 namespace NuGet.Tests.Apex
 {
@@ -249,25 +251,27 @@ public async Task InstallPackageFromPMC_TriggersNuGetCacheUpdatedEventAsync()
             testContext.SolutionService.Build();
             testContext.NuGetApexTestService.WaitForAutoRestore();
 
-            var nugetConsole = GetConsole(testContext.Project);
+            // Subscribe to the ISolutionManager.AfterNuGetCacheUpdated event
+            using var cacheUpdatedEvent = new ManualResetEventSlim(false);
+            var solutionManager = testContext.NuGetApexTestService.SolutionManager;
+            void OnAfterNuGetCacheUpdated(object sender, NuGetEventArgs<string> e) => cacheUpdatedEvent.Set();
+            solutionManager.AfterNuGetCacheUpdated += OnAfterNuGetCacheUpdated;
 
-            // Register for the ISolutionManager.AfterNuGetCacheUpdated event via PMC PowerShell session
-            nugetConsole.Execute("Get-Event | Remove-Event");
-            nugetConsole.Execute("$componentModel = Get-VSComponentModel");
-            nugetConsole.Execute("$solutionManager = $componentModel.GetService([NuGet.PackageManagement.ISolutionManager])");
-            nugetConsole.Execute("Register-ObjectEvent -InputObject $solutionManager -EventName AfterNuGetCacheUpdated -SourceIdentifier SolutionManagerCacheUpdated");
-
-            // Act
-            nugetConsole.InstallPackageFromPMC(packageName, packageVersion);
-
-            // Assert - verify the cache update event was raised
-            nugetConsole.Execute("$cacheEvent = Wait-Event -SourceIdentifier SolutionManagerCacheUpdated -TimeoutSec 10");
-            nugetConsole.Execute("Unregister-Event -SourceIdentifier SolutionManagerCacheUpdated");
-            nugetConsole.Execute("if ($cacheEvent) { Write-Host 'CACHE_EVENT_RECEIVED' } else { Write-Host 'CACHE_EVENT_NOT_RECEIVED' }");
+            try
+            {
+                // Act
+                var nugetConsole = GetConsole(testContext.Project);
+                nugetConsole.InstallPackageFromPMC(packageName, packageVersion);
 
-            Assert.IsTrue(
-                nugetConsole.IsMessageFoundInPMC("CACHE_EVENT_RECEIVED"),
-                $"Cache update event should have been raised after package install. Actual PMC output: {nugetConsole.GetText()}");
+                // Assert
+                Assert.IsTrue(
+                    cacheUpdatedEvent.Wait(TimeSpan.FromSeconds(10)),
+                    "Cache update event should have been raised after package install.");
+            }
+            finally
+            {
+                solutionManager.AfterNuGetCacheUpdated -= OnAfterNuGetCacheUpdated;
+            }
         }
 
         // Migrated from Test-NetCoreVSandMSBuildNoOp in NetCoreProjectTest.ps1