Define a CLOS-like 'around' modifier as a decorator, to neaten up the 'orig_*' noise of wrapping the setUp()/tearDown() methods

This commit is contained in:
Paul "LeoNerd" Evans 2014-09-12 19:07:29 +01:00
parent aeb69c0f8c
commit 7a77aabb4b

View file

@ -26,6 +26,23 @@ logging.getLogger().addHandler(logging.StreamHandler())
logging.getLogger().setLevel(NEVER)
def around(target):
"""A CLOS-style 'around' modifier, which wraps the original method of the
given instance with another piece of code.
@around(self)
def method_name(orig, *args, **kwargs):
return orig(*args, **kwargs)
"""
def _around(code):
name = code.__name__
orig = getattr(target, name)
def new(*args, **kwargs):
return code(orig, *args, **kwargs)
setattr(target, name, new)
return _around
class TestCase(unittest.TestCase):
"""A subclass of twisted.trial's TestCase which looks for 'loglevel'
attributes on both itself and its individual test methods, to override the
@ -40,23 +57,19 @@ class TestCase(unittest.TestCase):
getattr(self, "loglevel",
NEVER))
orig_setUp = self.setUp
def setUp():
@around(self)
def setUp(orig):
old_level = logging.getLogger().level
if old_level != level:
orig_tearDown = self.tearDown
def tearDown():
ret = orig_tearDown()
@around(self)
def tearDown(orig):
ret = orig()
logging.getLogger().setLevel(old_level)
return ret
self.tearDown = tearDown
logging.getLogger().setLevel(level)
return orig_setUp()
self.setUp = setUp
return orig()
def DEBUG(target):