spectre.console/src/Spectre.Console.Tests/Fixtures/PlainConsole.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace Spectre.Console.Tests
{
    public sealed class PlainConsole : IAnsiConsole, IDisposable
    {
        public Capabilities Capabilities => throw new NotSupportedException();
        public Encoding Encoding { get; }

        public int Width { get; }
        public int Height { get; }

        public Decoration Decoration { get; set; }
        public Color Foreground { get; set; }
        public Color Background { get; set; }

        public StringWriter Writer { get; }
        public string Output => Writer.ToString().TrimEnd('\n');
        public IReadOnlyList<string> Lines => Output.Split(new char[] { '\n' });

        public PlainConsole(int width = 80, int height = 9000, Encoding encoding = null)
        {
            Width = width;
            Height = height;
            Encoding = encoding ?? Encoding.UTF8;
            Writer = new StringWriter();
        }

        public void Dispose()
        {
            Writer.Dispose();
        }

        public void Write(string text)
        {
            Writer.Write(text);
        }
    }
}