At Wednesday 26/7/2006 19:44, David Primmer wrote:
I am trying to write a unit test for a function that accepts a buffer
object. As far as I can tell, buffer's cannot be directly represented
in code. How do I create the object for the test? (The buffer object comes
through ADSI in an Active Directory query of the user GUID property).
If I print the GUID property, it prints a Unicode encoded string of the
byte stream: u'8108fd1ac12c0d42924355c8d9987f19'. I don't believe this
is the 'native' representation. The function I'm trying to test
translates it to MS's hex format: '{38303138-6466-6131-6331-326330643432}'
Any danger using this unicode format?
I think you are mixing many things.
You *can* create a buffer object, using the built-in function buffer():
>>> x=buffer('hello')
>>> print x[0]
h
>>> print x[4]
o
>>> print x[5]
Traceback (most recent call last):
File "<stdin>", line 1, in ?
IndexError: buffer index out of range
A GUID is always 16 bytes length. Your Unicode string is 32 bytes
length; apparently it is the hex representation (two hex chars per
byte). If you feed the function with that string, it interprets the
first 16 bytes only, *each* hex number as a byte: 38h='8', 30h='0',
31h='1'...64h='d' 34h='4' 32h='2'
Can you post an example showing the expected interfase?
Gabriel Genellina
Softlab SRL
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