CommandAppTester is trimming TestConsole output, requiring expected outputs to be manually adjusted

[FrankRay78]

Information

• OS: Windows 10
• Version: Spectre.Console 0.49.1, XUnit 2.9.3
• Terminal: Windows Terminal

Describe the bug
CommandAppTester is trimming TestConsole output, requiring expected outputs to be manually adjusted.

To Reproduce
Run the below, self-contained, unit test:

using Spectre.Console;
using Spectre.Console.Cli;
using Spectre.Console.Testing;
using Xunit;


public class HelloCommand : Command
{
    private IAnsiConsole console;

    public HelloCommand(IAnsiConsole console)
    {
        this.console = console;
    }

    public override int Execute(CommandContext context)
    {
        console.Write(
            new FigletText(" -- Hello -- ")
                //.Centered()
                .Color(Color.Red));

        return 0;
    }
}

public class Tests
{
    [Fact]
    public void Should_Output_Centered_FigletText()
    {
        // Given
        var app = new CommandAppTester();
        app.Configure(config => config.PropagateExceptions());

        app.SetDefaultCommand<HelloCommand>();

        // When
        var result = app.Run();

        // Then
        Assert.Equal(0, result.ExitCode);
    }
}

Expected behavior
Whitespace is trimmed from the TestConsole output (see screenshot below)

Screenshots

Additional context
Here is the culprit:

nb. I don't see a good reason for the literal command output to be manipulated after the command has executed (please tell me if you know why this is necessary). We saw a similar thing happening in the CLI command parser stripping out whitespace, which we eventually abandoned because it was causing inaccurate discarding of whitespace.

---

Please upvote 👍 this issue if you are interested in it.

[patriksvensson]

We could make it configurable.

[FrankRay78]

PR #1739 raised @patriksvensson.

[FrankRay78]

Check out this bad boy @patriksvensson ... no trim works perfectly!

https://github.com/FrankRay78/SpeedTestConsole/blob/main/src/SpeedTestConsole.Tests/SpeedTestConsoleTests.cs

    [Fact]
    public async Task Should_Display_Help_When_Run_With_No_Arguments()
    {
        // Given
        var app = new CommandAppTester(new CommandAppTesterSettings { TrimConsoleOutput = false });
        app.Configure(Program.ConfigureAction);

        // When
        var result = await app.RunAsync();

        // Then
        Assert.Equal(0, result.ExitCode);
        await Verify(result.Output);
    }

https://github.com/FrankRay78/SpeedTestConsole/blob/main/src/SpeedTestConsole.Tests/Expectations/SpeedTestConsoleTests.Should_Display_Help_When_Run_With_No_Arguments.verified.txt

   _____                            __   __                  __           ______                                  __      
  / ___/    ____   ___   ___   ____/ /  / /_  ___    _____  / /_         / ____/  ____    ____    _____  ____    / /  ___ 
  \__ \    / __ \ / _ \ / _ \ / __  /  / __/ / _ \  / ___/ / __/        / /      / __ \  / __ \  / ___/ / __ \  / /  / _ \
 ___/ /   / /_/ //  __//  __// /_/ /  / /_  /  __/ (__  ) / /_         / /___   / /_/ / / / / / (__  ) / /_/ / / /  /  __/
/____/   / .___/ \___/ \___/ \__,_/   \__/  \___/ /____/  \__/         \____/   \____/ /_/ /_/ /____/  \____/ /_/   \___/ 
        /_/                                                                                                               

USAGE:
    SpeedTestConsole [OPTIONS] 

OPTIONS:
    -h, --help    Prints help information

COMMANDS:
    servers     Show the nearest speed test servers    
    download    Perform an internet download speed test