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/* -*- Mode: csharp; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
//
// DeflateStreamTest.cs - NUnit Test Cases for the System.IO.Compression.DeflateStream class
//
// Authors:
// Christopher James Lahey <clahey@ximian.com>
//
// (C) 2004 Novell, Inc. <http://www.novell.com>
//
#if NET_2_0
using NUnit.Framework;
using System;
using System.IO;
using System.IO.Compression;
namespace MonoTests.System.IO.Compression
{
[TestFixture]
public class DeflateStreamTest
{
private static void CopyStream (Stream src, Stream dest)
{
byte[] array = new byte[1024];
int bytes_read;
bytes_read = src.Read (array, 0, 1024);
while (bytes_read != 0) {
dest.Write (array, 0, bytes_read);
bytes_read = src.Read (array, 0, 1024);
}
}
private static bool compare_buffers (byte[] first, byte[] second, int length)
{
if (first.Length < length || second.Length < length) {
return false;
}
for (int i = 0; i < length; i++) {
if (first[i] != second[i]) {
return false;
}
}
return true;
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void Constructor_Null ()
{
DeflateStream ds = new DeflateStream (null, CompressionMode.Compress);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void Constructor_InvalidCompressionMode ()
{
DeflateStream ds = new DeflateStream (new MemoryStream (), (CompressionMode)Int32.MinValue);
}
[Test]
public void CheckCompressDecompress ()
{
byte [] data = new byte[100000];
for (int i = 0; i < 100000; i++) {
data[i] = (byte) i;
}
MemoryStream dataStream = new MemoryStream (data);
MemoryStream backing = new MemoryStream ();
DeflateStream compressing = new DeflateStream (backing, CompressionMode.Compress, true);
CopyStream (dataStream, compressing);
dataStream.Close();
compressing.Close();
backing.Seek (0, SeekOrigin.Begin);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
MemoryStream output = new MemoryStream ();
CopyStream (decompressing, output);
Assert.IsTrue (compare_buffers (data, output.GetBuffer(), (int) output.Length));
decompressing.Close();
output.Close();
}
[Test]
public void CheckDecompress ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
StreamReader reader = new StreamReader (decompressing);
Assert.AreEqual ("Hello", reader.ReadLine ());
decompressing.Close();
}
[Test]
[ExpectedException (typeof (ArgumentNullException))]
public void CheckNullRead ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
decompressing.Read (null, 0, 20);
}
[Test]
[ExpectedException (typeof (InvalidOperationException))]
public void CheckCompressingRead ()
{
byte [] dummy = new byte[20];
MemoryStream backing = new MemoryStream ();
DeflateStream compressing = new DeflateStream (backing, CompressionMode.Compress);
compressing.Read (dummy, 0, 20);
}
[Test]
[ExpectedException (typeof (ArgumentException))]
public void CheckRangeRead ()
{
byte [] dummy = new byte[20];
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
decompressing.Read (dummy, 10, 20);
}
#if !MOBILE
[Test]
[Category("NotWorking")]
[ExpectedException (typeof (InvalidDataException))]
public void CheckInvalidDataRead ()
{
byte [] data = {0x11, 0x78, 0x89, 0x91, 0xbe, 0xf3, 0x48, 0xcd, 0xc9, 0xc9, 0xe7, 0x02, 0x00 };
byte [] dummy = new byte[20];
MemoryStream backing = new MemoryStream (data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
decompressing.Read (dummy, 0, 20);
}
#endif
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void CheckClosedRead ()
{
byte [] dummy = new byte[20];
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
decompressing.Close ();
decompressing.Read (dummy, 0, 20);
}
[Test]
[ExpectedException (typeof (ObjectDisposedException))]
public void CheckClosedFlush ()
{
MemoryStream backing = new MemoryStream ();
DeflateStream compressing = new DeflateStream (backing, CompressionMode.Compress);
compressing.Close ();
compressing.Flush ();
}
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void CheckSeek ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
decompressing.Seek (20, SeekOrigin.Current);
}
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void CheckSetLength ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
decompressing.SetLength (20);
}
[Test]
public void CheckGetCanSeekProp ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompress = new DeflateStream (backing, CompressionMode.Decompress);
Assert.IsFalse (decompress.CanSeek, "#A1");
Assert.IsTrue (backing.CanSeek, "#A2");
decompress.Dispose ();
Assert.IsFalse (decompress.CanSeek, "#A3");
Assert.IsFalse (backing.CanSeek, "#A4");
backing = new MemoryStream ();
DeflateStream compress = new DeflateStream (backing, CompressionMode.Compress);
Assert.IsFalse (compress.CanSeek, "#B1");
Assert.IsTrue (backing.CanSeek, "#B2");
compress.Dispose ();
Assert.IsFalse (decompress.CanSeek, "#B3");
Assert.IsFalse (backing.CanSeek, "#B4");
}
[Test]
public void CheckGetCanReadProp ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompress = new DeflateStream (backing, CompressionMode.Decompress);
Assert.IsTrue (decompress.CanRead, "#A1");
Assert.IsTrue (backing.CanRead, "#A2");
decompress.Dispose ();
Assert.IsFalse (decompress.CanRead, "#A3");
Assert.IsFalse (backing.CanRead, "#A4");
backing = new MemoryStream ();
DeflateStream compress = new DeflateStream (backing, CompressionMode.Compress);
Assert.IsFalse (compress.CanRead, "#B1");
Assert.IsTrue (backing.CanRead, "#B2");
compress.Dispose ();
Assert.IsFalse (decompress.CanRead, "#B3");
Assert.IsFalse (backing.CanRead, "#B4");
}
[Test]
public void CheckGetCanWriteProp ()
{
MemoryStream backing = new MemoryStream ();
DeflateStream decompress = new DeflateStream (backing, CompressionMode.Decompress);
Assert.IsFalse (decompress.CanWrite, "#A1");
Assert.IsTrue (backing.CanWrite, "#A2");
decompress.Dispose ();
Assert.IsFalse (decompress.CanWrite, "#A3");
Assert.IsFalse (backing.CanWrite, "#A4");
backing = new MemoryStream ();
DeflateStream compress = new DeflateStream (backing, CompressionMode.Compress);
Assert.IsTrue (compress.CanWrite, "#B1");
Assert.IsTrue (backing.CanWrite, "#B2");
compress.Dispose ();
Assert.IsFalse (decompress.CanWrite, "#B3");
Assert.IsFalse (backing.CanWrite, "#B4");
}
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void CheckSetLengthProp ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
decompressing.SetLength (20);
}
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void CheckGetLengthProp ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
long length = decompressing.Length;
}
[Test]
[ExpectedException (typeof (NotSupportedException))]
public void CheckGetPositionProp ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompressing = new DeflateStream (backing, CompressionMode.Decompress);
long position = decompressing.Position;
}
[Test]
public void DisposeTest ()
{
MemoryStream backing = new MemoryStream (compressed_data);
DeflateStream decompress = new DeflateStream (backing, CompressionMode.Decompress);
decompress.Dispose ();
decompress.Dispose ();
}
static byte [] compressed_data = { 0xf3, 0x48, 0xcd, 0xc9, 0xc9,
0xe7, 0x02, 0x00 };
[Test]
public void JunkAtTheEnd ()
{
// Write a deflated stream, then some additional data...
using (MemoryStream ms = new MemoryStream())
{
// The compressed stream
using (DeflateStream stream = new DeflateStream(ms, CompressionMode.Compress, true))
{
stream.WriteByte(1);
stream.Flush();
}
// Junk
ms.WriteByte(2);
ms.Position = 0;
// Reading: this should not hang
using (DeflateStream stream = new DeflateStream(ms, CompressionMode.Decompress))
{
byte[] buffer = new byte[512];
int len = stream.Read(buffer, 0, buffer.Length);
Console.WriteLine(len == 1);
}
}
}
}
}
#endif
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