spectre.console/test/Spectre.Console.Tests/Unit/Progress/ProgressColumnFixture.cs

using System;
using Spectre.Console.Rendering;
using Spectre.Console.Testing;

namespace Spectre.Console.Tests.Unit
{
    public sealed class ProgressColumnFixture<T>
        where T : ProgressColumn, new()
    {
        public T Column { get; }
        public ProgressTask Task { get; set; }

        public ProgressColumnFixture(double completed, double total)
        {
            Column = new T();
            Task = new ProgressTask(1, "Foo", total);
            Task.Increment(completed);
        }

        public string Render()
        {
            var console = new TestConsole();
            var context = new RenderContext(console.Profile.Capabilities);
            console.Write(Column.Render(context, Task, TimeSpan.Zero));
            return console.Output;
        }
    }
}