using NUnit.Framework;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Threading;

namespace Vanara.IO.Tests
{
	partial class BackgroundCopyTests
	{
		[Test]
		public void CopyAsyncCancelReportTest()
		{
			using var tempRoot = new TemporaryDirectory();

			var srcFile = tempRoot.CreateFile(100 * TemporaryDirectory.OneMebibyte).FullName;

			var dstFile = tempRoot.RandomTxtFileFullPath;


			using var cts = new CancellationTokenSource();

			var collection = new Collection<string>();

			var prog = new Progress<Tuple<BackgroundCopyJobState, byte>>(t => collection.Add($"{t.Item2}% : {t.Item1}"));

			cts.CancelAfter(TimeSpan.FromMilliseconds(50));


			Assert.That(() => BackgroundCopyManager.CopyAsync(srcFile, dstFile, cts.Token, prog), Throws.TypeOf<OperationCanceledException>());

			Assert.That(File.Exists(dstFile), Is.False);

			Assert.That(collection.Count, Is.GreaterThanOrEqualTo(0));

			TestContext.Write(string.Join("\r\n", collection));
		}
	}
}