CommandFilterTest to reproduce bug

Author: zadykian

tests/ConsoleAppFramework.Tests/Integration/CommandFilterTest.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Threading.Tasks;
+using FluentAssertions;
+using Microsoft.Extensions.Hosting;
+using Xunit;
+// ReSharper disable UnusedMember.Local
+// ReSharper disable ClassNeverInstantiated.Local
+
+namespace ConsoleAppFramework.Integration.Test;
+
+public class FilterTest
+{
+	[Fact]
+	public void ApplyAttributeFilterTest()
+	{
+		using var console = new CaptureConsoleOutput();
+		var args = new[] { "test-argument-name" };
+		Host.CreateDefaultBuilder().RunConsoleAppFrameworkAsync<TestConsoleApp>(args);
+		console.Output.Should().Contain("[in filter] before");
+		console.Output.Should().Contain(args[0]);
+		console.Output.Should().Contain("[in filter] after");
+	}
+
+	/// <inheritdoc />
+	private class TestConsoleApp : ConsoleAppBase
+	{
+		[RootCommand]
+		[ConsoleAppFilter(typeof(TestFilter))]
+		public void RootCommand([Option(index: 0)]string someArgument) => Console.WriteLine(someArgument);
+	}
+
+	/// <inheritdoc />
+	private class TestFilter : ConsoleAppFilter
+	{
+		/// <inheritdoc />
+		public override async ValueTask Invoke(ConsoleAppContext context, Func<ConsoleAppContext, ValueTask> next)
+		{
+			Console.WriteLine("[in filter] before");
+			await next(context);
+			Console.WriteLine("[in filter] after");
+		}
+	}
+}