Use functools.wraps in decorators

This makes sure docstring and name are inherited from the decorated
definition. Fixes decorated unit tests, which previously where skipped
since their name did not start with test_ after decorating.


git-svn-id: https://humgenprojects.lumc.nl/svn/mutalyzer/trunk@619 eb6bd6ab-9ccd-42b9-aceb-e2899b4a52f1

mutalyzer/util.py

@@ -25,6 +25,7 @@ import math
 import time
 import inspect
 from itertools import izip_longest
+from functools import wraps
 
 import Bio.Seq
 from Bio.Alphabet import IUPAC
@@ -804,6 +805,7 @@ def slow(f):
     @todo: I don't think this actually belongs here (a separate util module
       for the unit tests?).
     """
+    @wraps(f)
     def slow_f(*args, **kwargs):
         if 'MUTALYZER_QUICK_TEST' in os.environ \
                and os.environ['MUTALYZER_QUICK_TEST'] == '1':
@@ -823,6 +825,7 @@ def skip(f):
     @todo: I don't think this actually belongs here (a separate util module
       for the unit tests?).
     """
+    @wraps(f)
     def disabled_f(*args, **kwargs):
         return
     return disabled_f
@@ -842,6 +845,7 @@ def singleton(cls):
     [1] http://www.python.org/dev/peps/pep-0318/#examples
     """
     instances = {}
+    @wraps(cls)
     def getinstance():
         if cls not in instances:
             instances[cls] = cls()