using System;

using System.IO;

using System.Text;

using System.Linq;

using System.Diagnostics;

using System.Reflection;

using System.Threading.Tasks;

using System.Threading;

​

using NUnit.Framework;

using NUnit.Framework.Internal;

​

using ICSharpCode.SharpZipLib.Zip;

using ICSharpCode.SharpZipLib.GZip;

using ICSharpCode.SharpZipLib.Tar;

​

// Test with input that works correctly

Test(Repro, "foo");

​

void Repro(string input) {

    // Setup

    using var ms = new MemoryStream();

    using (var zos = new ZipOutputStream(ms){ IsStreamOwner = false }) {

        zos.PutNextEntry(new ZipEntry("file1"){ CompressionMethod = CompressionMethod.Stored });

        zos.Write(Encoding.UTF8.GetBytes(input.ToLower()));

        zos.CloseEntryAsync(CancellationToken.None).Wait();

        zos.FlushAsync().Wait();

        zos.PutNextEntry(new ZipEntry("file2"){ CompressionMethod = CompressionMethod.Stored });

        zos.Write(Encoding.UTF8.GetBytes(input.ToLower()));

        zos.CloseEntryAsync(CancellationToken.None).Wait();

        zos.FlushAsync().Wait();

        zos.PutNextEntry(new ZipEntry("file3"){ CompressionMethod = CompressionMethod.Stored });

        zos.Write(Encoding.UTF8.GetBytes(input.ToLower()));

        zos.CloseEntryAsync(CancellationToken.None).Wait();

        zos.FlushAsync().Wait();

    }

    ms.Seek(0, SeekOrigin.Begin);

​

    Log($"Wrote {ms.Length} bytes!");

​

    // Test

    using (var zis = new ZipInputStream(ms){ IsStreamOwner = false }) {

        var entry = zis.GetNextEntry();

        Assert.That(entry, Is.Not.Null);

        Assert.That(entry.Name, Is.EqualTo("file1"));

        var output = new StreamReader(zis).ReadToEnd();

        Assert.That(output, Is.EqualTo(input));

        entry = zis.GetNextEntry();

        Assert.That(entry, Is.Not.Null);

        Assert.That(entry.Name, Is.EqualTo("file2"));

        output = new StreamReader(zis).ReadToEnd();

        Assert.That(output, Is.EqualTo(input));

        entry = zis.GetNextEntry();

        Assert.That(entry, Is.Not.Null);

        Assert.That(entry.Name, Is.EqualTo("file3"));

        output = new StreamReader(zis).ReadToEnd();

        Assert.That(output, Is.EqualTo(input));

    }

}

​

#region Helpers // These are just a helpers to make the results more legible

​

void Test<T>(Action<T> a, T input) 

{

    // Prevent NUnit from grouping exceptions together

    using var ctx = new TestExecutionContext.IsolatedContext();

    Console.WriteLine($"Testing input \"{input}\"...\n");

    try { 

        a(input);

        Console.WriteLine("\n=> OK!");

    }

    catch (Exception x) {

        Console.WriteLine($"\n=> Failed! ({x.GetType().Name})");    

        Console.WriteLine($"\n{x.Message}");

        var trimmedStack = string.Join("\n", x.StackTrace.Split("\n").Where(l => !l.Contains("ReportFailure")));

        Console.WriteLine($"{trimmedStack}");

    }

    Console.WriteLine($"\n{new string('=', 128)}\n");

}

void Log(string message) => Console.WriteLine($"  {message}");

#endregion