using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xunit;
using Shouldly;
using DotnetStreams;
using System.IO;
using DotnetStreamsTests.Testables;

namespace DotnetStreamsTests
{
	public class ConsoleOutputTargetTests
	{
		private IOutputTarget outputTarget;

		[Fact]
		public void WritesToOutputStream()
		{
			ListWriter writer = new();
			outputTarget = new TestableConsoleOutputTarget(writer);

			outputTarget.Open();
			outputTarget.Output("1");
			outputTarget.Output("2");
			outputTarget.Output("");
			outputTarget.Output("3");
			outputTarget.Close();

			writer.Lines.Count.ShouldBe(4);
			writer.Lines[0].ShouldBe("1");
			writer.Lines[1].ShouldBe("2");
			writer.Lines[2].ShouldBe(string.Empty);
			writer.Lines[3].ShouldBe("3");
		}
	}
}