Unit test to reproduce the -v/--version bug

test/Spectre.Console.Cli.Tests/Data/Commands/VersionCommand.cs

@@ -0,0 +1,18 @@
+namespace Spectre.Console.Tests.Data;
+
+public sealed class VersionCommand : Command<VersionSettings>
+{
+    private readonly IAnsiConsole _console;
+
+    public VersionCommand(IAnsiConsole console)
+    {
+        _console = console;
+    }
+
+    public override int Execute(CommandContext context, VersionSettings settings)
+    {
+        _console.WriteLine($"VersionCommand ran, Version: {settings.Version ?? string.Empty}");
+
+        return 0;
+    }
+}

test/Spectre.Console.Cli.Tests/Data/Settings/VersionSettings.cs

@@ -0,0 +1,7 @@
+namespace Spectre.Console.Tests.Data;
+
+public sealed class VersionSettings : CommandSettings
+{
+    [CommandOption("-v|--version")]
+    public string Version { get; set; }
+}

test/Spectre.Console.Cli.Tests/Unit/CommandAppTests.Parsing.cs

@@ -586,5 +586,28 @@ public sealed partial class CommandAppTests
                 result.Output.ShouldBe("Error: Command 'dog' is missing required argument 'AGE'.");
             }
         }
+
+        /// <summary>
+        /// -v or --version switches should result in the Version option being set
+        /// on VersionSettings, and then VersionCommand.Execute(...) being called
+        /// </summary>
+        [InlineData("-v")]
+        [InlineData("--version")]
+        [Theory]
+        public void Should_Run_Custom_Version_Command(string versionOption)
+        {
+            // Given
+            var app = new CommandAppTester();
+            app.Configure(configurator =>
+            {
+                configurator.AddCommand<Spectre.Console.Tests.Data.VersionCommand>("CustomVersionCommand");
+            });
+
+            // When
+            var result = app.Run("CustomVersionCommand", versionOption, "1.2.5");
+
+            // Then
+            result.Output.ShouldBe("VersionCommand ran, Version: 1.2.5");
+        }
     }
 }