?
Solved

Stream have diffrent size while debugging

Posted on 2009-07-01
1
Medium Priority
?
276 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: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering 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

We all know that functional code is the leg that any good program stands on when it comes right down to it, however, if your program lacks a good user interface your product may not have the appeal needed to keep your customers happy. This issue can…
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
Loops Section Overview
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. …

571 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