public void cancelTransactionTest()
{
Stream stream = new MemoryStream();
TransactionalStreamReader target = new TransactionalStreamReader(stream);
// Przygotuj dane testowe
stream.WriteByte(9);
stream.WriteByte(20);
stream.WriteByte(31);
stream.WriteByte(42);
stream.Seek(0, SeekOrigin.Begin);
target.startTransaction();
Assert.AreEqual(target.ReadByte(), 9);
Assert.AreEqual(target.ReadByte(), 20);
target.cancelTransaction();
target.startTransaction();
Assert.AreEqual(target.ReadByte(), 9);
Assert.AreEqual(target.ReadByte(), 20);
Assert.AreEqual(target.ReadByte(), 31);
Assert.AreEqual(target.ReadByte(), 42);
target.cancelTransaction();
Assert.AreEqual(stream.ReadByte(), -1); // Cały strumien został zjedzony
}
public override bool match(TransactionalStreamReader s)
{
// First, read whatever is in the stream
int newValue = 0;
s.startTransaction();
for (int i = 0; i < Size; i++)
{
newValue |= s.ReadByte() << (8*i);
}
if (MinValue > newValue || newValue > MaxValue)
{
s.cancelTransaction();
return false;
}
if (myValue == null)
{
Value = newValue;
s.commitTransaction();
return true;
}
else // myValue != null
if (myValue == newValue)
{
s.commitTransaction();
return true;
}
else
{
s.cancelTransaction();
return false;
}
}
