Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Stream have diffrent size while debugging

Posted on 2009-07-01
1
Medium Priority
?
273 Views
Last Modified: 2012-05-07
Hi,

I have a TestMethod to compare 2 streams using their bytes. here is part of the code (see code)

When debug this test then it pass, but when i just run it then i get the length differ fail assertion.

what is wrong in this code?
byte[] actual;
 byte[] expectedbytes;
 
using (MemoryStream actualstream = GenerateDocument(document, null, MpFunctionCode.NWPOF))
                {
                    actualstream.Position = 0;
                    actual = actualstream.ToArray();
                    actualstream.Close();
                }
 
using (Stream expected = typeof(GeneratorTest).Assembly.GetManifestResourceStream("Generator.UnitTests.resources.ExpectedOutput.pdf"))
            {
                expected.Position = 0;
                expectedbytes = WriteToByte(expected, (int)expected.Length);
                expected.Close();
            }
 
AssertEqual(actual, expectedbytes);
 
 
private static void AssertEqual(byte[] actual, byte[] expectedbytes)
        {
            if (actual.Length != expectedbytes.Length)
                Assert.Fail("Length differ:    Actual: " + actual.Length + "        Expected: " + expectedbytes.Length);
 
            for (int i = 0; i < expectedbytes.Length; i++)
            {
                if (expectedbytes[i] != actual[i])
                    Assert.Fail("Not the same: " + actual[i] + " " + expectedbytes[i] + " index: " + i);
            }
        }
 
 
private static byte[] WriteToByte(Stream stream, int initialLength)
        {
            stream.Position = 0;
            // If we've been passed an unhelpful initial length, just
            // use 32K.
            if (initialLength < 1)
            {
                initialLength = 32768;
            }
 
            byte[] buffer = new byte[initialLength];
            int read = 0;
 
            int chunk;
            while ((chunk = stream.Read(buffer, read, buffer.Length - read)) > 0)
            {
                read += chunk;
 
                // If we've reached the end of our buffer, check to see if there's
                // any more information
                if (read == buffer.Length)
                {
                    int nextByte = stream.ReadByte();
 
                    // End of stream? If so, we're done
                    if (nextByte == -1)
                    {
                        return buffer;
                    }
 
                    // Nope. Resize the buffer, put in the byte we've just
                    // read, and continue
                    byte[] newBuffer = new byte[buffer.Length * 2];
                    Array.Copy(buffer, newBuffer, buffer.Length);
                    newBuffer[read] = (byte)nextByte;
                    buffer = newBuffer;
                    read++;
                }
            }
            // Buffer is now too big. Shrink it.
            byte[] ret = new byte[read];
            Array.Copy(buffer, ret, read);
       
            return ret;
        }

Open in new window

0
Comment
Question by:kimos123
1 Comment
 

Accepted Solution

by:
kimos123 earned 0 total points
ID: 24761059
nvm delete this
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction Although it is an old technology, serial ports are still being used by many hardware manufacturers. If you develop applications in C#, Microsoft .NET framework has SerialPort class to communicate with the serial ports.  I needed to…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …
Suggested Courses

886 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question