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Block socket creation by host/port.

Project description


The intended use is for making sure your unit tests don’t make network connections. Activate sockfilter with a predicate like:

# only allow http connections to localhost
def socket_address_allowed(address):
    return ( in ['localhost', ''] and
            address.port == 80)


Any subsequent attempts to open a connection at an address not satisfying the predicate will raise sockfilter.SockFilterError.

with_sockfiltering decorator

from sockfilter import with_sockfiltering

def test_foo():

sockfiltering context manager

from sockfilter import sockfiltering

def test_foo():
    with sockfiltering(socket_address_allowed):

enable and disable

import sockfilter
from unittest import TestCase

class FooTest(TestCase):

    def setUp(self):

    def tearDown(self):

    def test_foo(self):

Under the hood

Sockfilter works by monkey-patching Python’s socket library, inspired by HTTPretty.

Project details

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