The narcolepsy package contains code which alters the behavior of your
application/api by injecting random sleep calls into decorated functions.
The following code is an example of using the @narcoleptic decorator.
from narcolepsy import narcoleptic
@narcoleptic(max=5) # sleep for 5 seconds at max
def foobar():
for x in xrange(1024):
nested_function(x)
The @narcoleptic decorator takes three parameters (all optional):
min: The minimum sleep time in seconds.max: The maximum sleep time in seconds.chance: The maximum number of lines that will be executed before asleep()call is injected.
If no min or max are passed in, the constants defined in
narcolepsy.constants will be used instead.
If no chance is passed in, a value will be derived from the number of lines
in the input function.
The easiest way to install narcolepsy is via pip:
$ pip install narcolepsy
As mentioned in the official documentation, sys.settrace() isn't part
of the Python language definition and thus, may not be available to all
Python implementations.
In theory this could help test time-critical code (multi-producer/consumer concurrent applications), but I mostly just wanted to play around with line tracers.
This is a proof of concept. Use at your own risk!
See the LICENSE file for details.