unit tests for exception serialization.

test/ICSharpCode.SharpZipLib.Tests/Serialization/SerializationTests.cs

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+using System;
+using System.IO;
+using System.Runtime.Serialization;
+
+using NUnit.Framework;
+using ICSharpCode.SharpZipLib.BZip2;
+using ICSharpCode.SharpZipLib.Core;
+using ICSharpCode.SharpZipLib.GZip;
+using ICSharpCode.SharpZipLib.Lzw;
+using ICSharpCode.SharpZipLib.Tar;
+using ICSharpCode.SharpZipLib.Zip;
+
+namespace ICSharpCode.SharpZipLib.Tests.Serialization
+{
+	[TestFixture]
+	public class SerializationTests
+	{
+		/// <summary>
+		/// Test that SharpZipBaseException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("Core")]
+		[Category("Serialization")]
+		public void SerializeSharpZipBaseException()
+		{
+			string message = "Serialized SharpZipBaseException";
+			var exception = new SharpZipBaseException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as SharpZipBaseException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that InvalidNameException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("Core")]
+		[Category("Serialization")]
+		public void SerializeInvalidNameException()
+		{
+			string message = "Serialized InvalidNameException";
+			var exception = new InvalidNameException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as InvalidNameException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that StreamDecodingException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("Core")]
+		[Category("Serialization")]
+		public void SerializeStreamDecodingException()
+		{
+			string message = "Serialized StreamDecodingException";
+			var exception = new StreamDecodingException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as StreamDecodingException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that UnexpectedEndOfStreamException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("Core")]
+		[Category("Serialization")]
+		public void SerializeUnexpectedEndOfStreamException()
+		{
+			string message = "Serialized UnexpectedEndOfStreamException";
+			var exception = new UnexpectedEndOfStreamException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as UnexpectedEndOfStreamException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that ValueOutOfRangeException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("Core")]
+		[Category("Serialization")]
+		public void SerializeValueOutOfRangeException()
+		{
+			string message = "Serialized ValueOutOfRangeException";
+			var exception = new ValueOutOfRangeException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as ValueOutOfRangeException;
+
+			// ValueOutOfRangeException appends 'out of range' to the end of the message
+			Assert.That(deserializedException.Message, Is.EqualTo($"{message} out of range"), "should have expected message");
+		}
+
+		/// <summary>
+		/// Test that StreamUnsupportedException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("Core")]
+		[Category("Serialization")]
+		public void SerializeStreamUnsupportedException()
+		{
+			string message = "Serialized StreamUnsupportedException";
+			var exception = new StreamUnsupportedException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as StreamUnsupportedException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that BZip2Exception can be serialized.
+		/// </summary>
+		[Test]
+		[Category("BZip2")]
+		[Category("Serialization")]
+		public void SerializeBZip2Exception()
+		{
+			string message = "Serialized BZip2Exception";
+			var exception = new BZip2Exception(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as BZip2Exception;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that GZipException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("GZip")]
+		[Category("Serialization")]
+		public void SerializeGZipException()
+		{
+			string message = "Serialized GZipException";
+			var exception = new GZipException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as GZipException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that LzwException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("LZW")]
+		[Category("Serialization")]
+		public void SerializeLzwException()
+		{
+			string message = "Serialized LzwException";
+			var exception = new LzwException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as LzwException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that TarException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("LZW")]
+		[Category("Serialization")]
+		public void SerializeTarException()
+		{
+			string message = "Serialized TarException";
+			var exception = new TarException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as TarException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		/// <summary>
+		/// Test that ZipException can be serialized.
+		/// </summary>
+		[Test]
+		[Category("Zip")]
+		[Category("Serialization")]
+		public void SerializeZipException()
+		{
+			string message = "Serialized ZipException";
+			var exception = new ZipException(message);
+
+			var deserializedException = ExceptionSerialiseHelper(exception) as ZipException;
+			Assert.That(deserializedException.Message, Is.EqualTo(message), "deserialized message should match original message");
+		}
+
+		// Shared serialization helper
+		// round trips the specified exception using DataContractSerializer
+		private static object ExceptionSerialiseHelper<TExceptionType>(TExceptionType exception)
+		{
+			DataContractSerializer ser = new DataContractSerializer(typeof(TExceptionType));
+
+			using (var memoryStream = new MemoryStream())
+			{
+				ser.WriteObject(memoryStream, exception);
+
+				memoryStream.Seek(0, loc: SeekOrigin.Begin);
+
+				return ser.ReadObject(memoryStream);
+			}
+		}
+	}
+}
+