Hide restore output of first-run experience (#4740)

* Fix 4066

* Merge Conflict

* Move fix to the DotNetCommandFactory

* More normalization

The `\r\n` issue is oddly non-deterministic. This change did not affect the message endings and yet CI started failing. Normalizing both string should have the desired result...

src/Microsoft.DotNet.Cli.Utils/BuiltInCommand.cs

@@ -166,12 +166,14 @@ namespace Microsoft.DotNet.Cli.Utils
         public ICommand CaptureStdErr()
         {
             _stdErr.Capture();
+
             return this;
         }
 
         public ICommand CaptureStdOut()
         {
             _stdOut.Capture();
+            
             return this;
         }
 

src/Microsoft.DotNet.Cli.Utils/Command.cs

@@ -160,7 +160,7 @@ namespace Microsoft.DotNet.Cli.Utils
 #endif
 
             return new CommandResult(
-                this._process.StartInfo,
+                _process.StartInfo,
                 exitCode,
                 _stdOut?.CapturedOutput,
                 _stdErr?.CapturedOutput);

src/Microsoft.DotNet.Configurer/NuGetCachePrimer.cs

@@ -11,9 +11,13 @@ namespace Microsoft.DotNet.Configurer
     public class NuGetCachePrimer : INuGetCachePrimer
     {
         private readonly ICommandFactory _commandFactory;
+
         private readonly IDirectory _directory;
+
         private readonly IFile _file;
+
         private readonly INuGetPackagesArchiver _nugetPackagesArchiver;
+
         private readonly INuGetCacheSentinel _nuGetCacheSentinel;
 
         public NuGetCachePrimer(
@@ -36,9 +40,13 @@ namespace Microsoft.DotNet.Configurer
             IFile file)
         {
             _commandFactory = commandFactory;
+
             _directory = directory;
+
             _nugetPackagesArchiver = nugetPackagesArchiver;
+
             _nuGetCacheSentinel = nuGetCacheSentinel;
+
             _file = file;
         }
 
@@ -64,12 +72,14 @@ namespace Microsoft.DotNet.Configurer
             using (var temporaryDotnetNewDirectory = _directory.CreateTemporaryDirectory())
             {
                 var workingDirectory = temporaryDotnetNewDirectory.DirectoryPath;
+
                 var createProjectSucceeded = CreateTemporaryProject(workingDirectory);
 
                 if (createProjectSucceeded)
                 {
                     var restoreProjectSucceeded =
                         RestoreTemporaryProject(extractedPackagesArchiveDirectory, workingDirectory);
+
                     if (restoreProjectSucceeded)
                     {
                         _nuGetCacheSentinel.CreateIfNotExists();
@@ -104,6 +114,7 @@ namespace Microsoft.DotNet.Configurer
             if (commandResult.ExitCode != 0)
             {
                 Reporter.Verbose.WriteLine(commandResult.StdErr);
+
                 Reporter.Error.WriteLine(
                     $"Failed to create prime the NuGet cache. {commandToExecute} failed with: {commandResult.ExitCode}");
             }

src/dotnet/DotNetCommandFactory.cs

@@ -11,6 +11,13 @@ namespace Microsoft.DotNet.Cli
 {
     public class DotNetCommandFactory : ICommandFactory
     {
+        private bool _alwaysRunOutOfProc;
+
+        public DotNetCommandFactory(bool alwaysRunOutOfProc = false)
+        {
+            _alwaysRunOutOfProc = alwaysRunOutOfProc;
+        }
+
         public ICommand Create(
         	string commandName, 
         	IEnumerable<string> args, 
@@ -18,7 +25,7 @@ namespace Microsoft.DotNet.Cli
         	string configuration = Constants.DefaultConfiguration)
         {
             Func<string[], int> builtInCommand;
-            if (Program.TryGetBuiltInCommand(commandName, out builtInCommand))
+            if (!_alwaysRunOutOfProc && Program.TryGetBuiltInCommand(commandName, out builtInCommand))
             {
                 Debug.Assert(framework == null, "BuiltInCommand doesn't support the 'framework' argument.");
                 Debug.Assert(configuration == Constants.DefaultConfiguration, "BuiltInCommand doesn't support the 'configuration' argument.");

src/dotnet/Program.cs

@@ -198,7 +198,7 @@ namespace Microsoft.DotNet.Cli
                 using (var nugetPackagesArchiver = new NuGetPackagesArchiver())
                 {
                     var environmentProvider = new EnvironmentProvider();
-                    var commandFactory = new DotNetCommandFactory();
+                    var commandFactory = new DotNetCommandFactory(alwaysRunOutOfProc: true);
                     var nugetCachePrimer = 
                         new NuGetCachePrimer(commandFactory, nugetPackagesArchiver, nugetCacheSentinel);
                     var dotnetConfigurer = new DotnetFirstTimeUseConfigurer(

test/dotnet.Tests/GivenThatTheUserIsRunningDotNetForTheFirstTime.cs

@@ -57,7 +57,7 @@ namespace Microsoft.DotNet.Tests
         [Fact]
         public void It_shows_the_appropriate_message_to_the_user()
         {
-            const string firstTimeUseWelcomeMessage = @"Welcome to .NET Core!
+            string firstTimeUseWelcomeMessage = NormalizeLineEndings(@"Welcome to .NET Core!
 ---------------------
 Learn more about .NET Core @ https://aka.ms/dotnet-docs. Use dotnet --help to see available commands or go to https://aka.ms/dotnet-cli-docs.
 Telemetry
@@ -67,12 +67,12 @@ You can opt out of telemetry by setting a DOTNET_CLI_TELEMETRY_OPTOUT environmen
 You can read more about .NET Core tools telemetry @ https://aka.ms/dotnet-cli-telemetry.
 Configuring...
 -------------------
-A command is running to initially populate your local package cache, to improve restore speed and enable offline access. This command will take up to a minute to complete and will only happen once.";
+A command is running to initially populate your local package cache, to improve restore speed and enable offline access. This command will take up to a minute to complete and will only happen once.");
 
             // normalizing line endings as git is occasionally replacing line endings in this file causing this test to fail
             NormalizeLineEndings(_firstDotnetVerbUseCommandResult.StdOut)
-                .Should()
-                .StartWith(NormalizeLineEndings(firstTimeUseWelcomeMessage));
+                .Should().StartWith(firstTimeUseWelcomeMessage)
+                     .And.NotContain("Restore completed in");
         }
 
     	[Fact]