public void TestYDecodeYPartStateTransitions()
{
var ydec = new YDecoder();
var decoded = new byte[1024];
for (int i = 0; i < YPartTransitionInputs.Length; i++)
{
var input = Encoding.ASCII.GetBytes(YPartTransitionInputs[i]);
var chars = YPartTransitionOutputs[i].ToCharArray();
for (int j = 0; j < chars.Length; j++)
{
chars[j] -= (char)42;
}
var expected = new string (chars);
int n = ydec.Decode(input, 0, input.Length, decoded);
var actual = Encoding.ASCII.GetString(decoded, 0, n);
Assert.AreEqual(expected, actual, YPartTransitionInputs[i]);
ydec.Reset();
}
}
public void TestYDecodeStateTransitions()
{
using (var file = File.OpenRead(Path.Combine(DataDir, "state-changes.ntx"))) {
using (var decoded = new MemoryStream()) {
var ydec = new YDecoder();
using (var filtered = new FilteredStream(decoded)) {
filtered.Add(new DecoderFilter(ydec));
file.CopyTo(filtered, 1);
filtered.Flush();
}
Assert.AreEqual(584, decoded.Length, "The decoded size does not match.");
Assert.AreEqual(0xded29f4f, ydec.Checksum ^ 0xffffffff, "The decoded checksum does not match.");
}
}
}
public void TestDecodeSimpleYEncMessage()
{
using (var file = File.OpenRead("../../TestData/yenc/simple.msg")) {
var message = MimeMessage.Load(file);
using (var decoded = new MemoryStream()) {
var ydec = new YDecoder();
using (var filtered = new FilteredStream(decoded)) {
filtered.Add(new DecoderFilter(ydec));
((MimePart)message.Body).ContentObject.WriteTo(filtered);
}
Assert.AreEqual(584, decoded.Length, "The decoded size does not match.");
Assert.AreEqual(0xded29f4f, ydec.Checksum ^ 0xffffffff, "The checksum does not match.");
}
}
}
public void TestYDecodeMultiPart()
{
var expected = File.ReadAllBytes(Path.Combine(DataDir, "joystick.jpg"));
using (var decoded = new MemoryStream()) {
using (var file = File.OpenRead(Path.Combine(DataDir, "00000020.ntx"))) {
var ydec = new YDecoder();
using (var filtered = new FilteredStream(decoded)) {
filtered.Add(new DecoderFilter(ydec));
file.CopyTo(filtered, 1);
filtered.Flush();
}
Assert.AreEqual(11250, decoded.Length, "The decoded size does not match (part 1).");
Assert.AreEqual(0xbfae5c0b, ydec.Checksum ^ 0xffffffff, "The decoded checksum does not match (part 1).");
}
using (var file = File.OpenRead(Path.Combine(DataDir, "00000021.ntx"))) {
var ydec = new YDecoder();
using (var filtered = new FilteredStream(decoded)) {
filtered.Add(new DecoderFilter(ydec));
file.CopyTo(filtered, 1);
filtered.Flush();
}
Assert.AreEqual(19338, decoded.Length, "The decoded size does not match (part 2).");
Assert.AreEqual(0xaca76043, ydec.Checksum ^ 0xffffffff, "The decoded checksum does not match (part 2).");
}
var actual = decoded.GetBuffer();
for (int i = 0; i < expected.Length; i++)
{
Assert.AreEqual(expected[i], actual[i], "different content at index {0}", i);
}
}
}
public void TestYDecodeSimpleMessage()
{
using (var file = File.OpenRead(Path.Combine(DataDir, "simple.msg"))) {
var message = MimeMessage.Load(file);
using (var decoded = new MemoryStream()) {
var ydec = new YDecoder();
using (var filtered = new FilteredStream(decoded)) {
filtered.Add(new DecoderFilter(ydec));
((MimePart)message.Body).Content.WriteTo(filtered);
filtered.Flush();
}
decoded.Position = 0;
Assert.AreEqual(584, decoded.Length, "The decoded size does not match.");
Assert.AreEqual(0xded29f4f, ydec.Checksum ^ 0xffffffff, "The decoded checksum does not match.");
// now re-encode it
using (var encoded = new MemoryStream()) {
var ybegin = Encoding.ASCII.GetBytes("-- \n=ybegin line=128 size=584 name=testfile.txt \n");
var yend = Encoding.ASCII.GetBytes("=yend size=584 crc32=ded29f4f \n");
var yenc = new YEncoder();
encoded.Write(ybegin, 0, ybegin.Length);
using (var filtered = new FilteredStream(encoded)) {
filtered.Add(new EncoderFilter(yenc));
decoded.CopyTo(filtered, 4096);
filtered.Flush();
}
encoded.Write(yend, 0, yend.Length);
Assert.AreEqual(0xded29f4f, yenc.Checksum ^ 0xffffffff, "The encoded checksum does not match.");
using (var original = new MemoryStream()) {
using (var filtered = new FilteredStream(original)) {
filtered.Add(new Dos2UnixFilter());
((MimePart)message.Body).Content.WriteTo(filtered);
filtered.Flush();
}
var latin1 = Encoding.GetEncoding("iso-8859-1");
var buf = original.GetBuffer();
var expected = latin1.GetString(buf, 0, (int)original.Length);
buf = encoded.GetBuffer();
var actual = latin1.GetString(buf, 0, (int)encoded.Length);
Assert.AreEqual(expected, actual, "Encoded value does not match original.");
}
}
}
}
}
