Use Utf8 not just for witing to standard output, but also for reading from standard input (#1735)

Author: adamsitnik

src/BenchmarkDotNet/Engines/ConsoleHost.cs

@@ -8,9 +8,9 @@ namespace BenchmarkDotNet.Engines
  public sealed class ConsoleHost : IHost
  {
  private readonly TextWriter outWriter;
- private readonly TextReader inReader;
+ private readonly StreamReader inReader;
 
- public ConsoleHost([NotNull]TextWriter outWriter, [NotNull]TextReader inReader)
+ public ConsoleHost([NotNull]TextWriter outWriter, [NotNull]StreamReader inReader)
  {
  this.outWriter = outWriter ?? throw new ArgumentNullException(nameof(outWriter));
  this.inReader = inReader ?? throw new ArgumentNullException(nameof(inReader));

src/BenchmarkDotNet/Templates/BenchmarkProgram.txt

@@ -27,7 +27,7 @@ namespace BenchmarkDotNet.Autogenerated
 #if WASM
  BenchmarkDotNet.Engines.NoAcknowledgementConsoleHost host = new BenchmarkDotNet.Engines.NoAcknowledgementConsoleHost(System.Console.Out); // this variable name is used by CodeGenerator.GetCoreRtSwitch, do NOT change it
 #else
- BenchmarkDotNet.Engines.ConsoleHost host = new BenchmarkDotNet.Engines.ConsoleHost(System.Console.Out, System.Console.In); // this variable name is used by CodeGenerator.GetCoreRtSwitch, do NOT change it
+ BenchmarkDotNet.Engines.ConsoleHost host = new BenchmarkDotNet.Engines.ConsoleHost(System.Console.Out, new System.IO.StreamReader(System.Console.OpenStandardInput(), System.Text.Encoding.UTF8)); // this variable name is used by CodeGenerator.GetCoreRtSwitch, do NOT change it
 #endif
 
  // the first thing to do is to let diagnosers hook in before anything happens

src/BenchmarkDotNet/Toolchains/Executor.cs

@@ -91,6 +91,7 @@ private ProcessStartInfo CreateStartInfo(BenchmarkCase benchmarkCase, ArtifactsP
  RedirectStandardInput = true,
  RedirectStandardError = false, // #1629
  CreateNoWindow = true,
+ StandardOutputEncoding = Encoding.UTF8, // #1713
  WorkingDirectory = null // by default it's null
  };
 

tests/BenchmarkDotNet.Tests/Engine/EngineFactoryTests.cs

@@ -247,7 +247,7 @@ private EngineParameters CreateEngineParameters(Action<long> mainNoUnroll, Actio
  Dummy3Action = () => { },
  GlobalSetupAction = GlobalSetup,
  GlobalCleanupAction = GlobalCleanup,
- Host = new ConsoleHost(TextWriter.Null, TextReader.Null),
+ Host = new ConsoleHost(TextWriter.Null, StreamReader.Null),
  OverheadActionUnroll = OverheadUnroll,
  OverheadActionNoUnroll = OverheadNoUnroll,
  IterationCleanupAction = IterationCleanup,