spectre.console/test/Spectre.Console.Tests/Utilities/TestConsoleExtensions.cs

namespace Spectre.Console.Tests;

public static class TestConsoleExtensions
{
    private static readonly Regex _lineNumberRegex = new Regex(":\\d+", RegexOptions.Singleline);
    private static readonly Regex _filenameRegex = new Regex("\\sin\\s.*cs:nn", RegexOptions.Multiline);

    public static string WriteNormalizedException(this TestConsole console, Exception ex, ExceptionFormats formats = ExceptionFormats.Default)
    {
        if (!string.IsNullOrWhiteSpace(console.Output))
        {
            throw new InvalidOperationException("Output buffer is not empty.");
        }

        console.WriteException(ex, formats);
        return string.Join("\n", NormalizeStackTrace(console.Output)
            .NormalizeLineEndings()
            .Split(new char[] { '\n' })
            .Select(line => line.TrimEnd()));
    }

    public static string NormalizeStackTrace(string text)
    {
        text = _lineNumberRegex.Replace(text, match =>
        {
            return ":nn";
        });

        return _filenameRegex.Replace(text, match =>
        {
            var value = match.Value;
            var index = value.LastIndexOfAny(new[] { '\\', '/' });
            var filename = value.Substring(index + 1, value.Length - index - 1);

            return $" in /xyz/{filename}";
        });
    }
}