Add test for zip file containing 0 code length entries

Author: piksel

test/ICSharpCode.SharpZipLib.Tests/Zip/ZipCorruptionHandling.cs

@@ -0,0 +1,37 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Threading;
+using ICSharpCode.SharpZipLib;
+using ICSharpCode.SharpZipLib.Zip;
+using NUnit.Framework;
+
+namespace ICSharpCode.SharpZipLib.Tests.Zip
+{
+    public class ZipCorruptionHandling
+    {
+
+        const string TestFileZeroCodeLength = "UEsDBBQA+AAIANwyZ0U5T8HwjQAAAL8AAAAIABUAbGltZXJpY2t" +
+            "VVAkAAzBXXFR6LmBUVXgEAPQB9AEFjTEOwjAQBHu/YkVDg3gHoUaivjgHtmKfI5+D5d9zbndHM6/AldFJQTIJ" +
+            "PrVkPOkgce9QlJFi5hr9rhD+cUUvZ9qgnuRuBAtId97Qw0AL1Kbw5h6MykeKdlyWdlWs7OlUdgsodRqKVo0v8" +
+            "JWyGWZ6mLpuiii2t2Bl0mZ54QksOIpqXNPATF/eH1BLAQIXAxQAAgAIANxQZ0U5T8HwjQAAAL8AAAAIAA0AAA" +
+            "AAAAEAAACggQAAAABsaW1lcgEAQwAAAMgAAAAAAA==";
+		
+        [Test]
+		[Category("Zip")]
+        [MaxTime(5000)]
+        public void ZeroCodeLengthZipFile()
+        {
+            Assert.Throws<SharpZipBaseException>(() => {
+                var fileBytes = Convert.FromBase64String(TestFileZeroCodeLength);
+                using (var ms = new MemoryStream(fileBytes))
+                using (var zip = new ZipInputStream(ms))
+                {
+                    while (zip.GetNextEntry() != null) { }
+                }
+            });
+        }
+
+    }
+
+}