Solved

Stream have diffrent size while debugging

Posted on 2009-07-01
1
261 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

Highfive Gives IT Their Time Back

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

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…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

746 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

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now