commit fc127ad1e59601d0507a2ae802d333c220291a17 Author: trygve tor-dev@lists.torproject.org Date: Fri Aug 8 03:30:05 2014 +0000

PEP8 style fixes for bridgedb.test.test_smtp. --- lib/bridgedb/test/test_smtp.py | 76 +++++++++++++++++++++++++++------------- 1 file changed, 52 insertions(+), 24 deletions(-)

diff --git a/lib/bridgedb/test/test_smtp.py b/lib/bridgedb/test/test_smtp.py index 4e59002..4f30030 100644 --- a/lib/bridgedb/test/test_smtp.py +++ b/lib/bridgedb/test/test_smtp.py @@ -16,9 +16,13 @@ import random SMTP_DEBUG_LEVEL = 0 # set to 1 to see SMTP message exchange BRIDGEDB_SMTP_SERVER_ADDRESS = "localhost" BRIDGEDB_SMTP_SERVER_PORT = 6725 -FROM_ADDRESS_TEMPLATE = "test%d@127.0.0.1" # %d is parameterised with a random integer to make the sender unique -MIN_FROM_ADDRESS = 1 # minimum value used to parameterise FROM_ADDRESS_TEMPLATE -MAX_FROM_ADDRESS = 10**8 # max value used to parameterise FROM_ADDRESS_TEMPLATE. Needs to be pretty big to reduce the chance of collisions +# %d is parameterised with a random integer to make the sender unique +FROM_ADDRESS_TEMPLATE = "test%d@127.0.0.1" +# Minimum value used to parameterise FROM_ADDRESS_TEMPLATE +MIN_FROM_ADDRESS = 1 +# Max value used to parameterise FROM_ADDRESS_TEMPLATE. Needs to be pretty big +# to reduce the chance of collisions +MAX_FROM_ADDRESS = 10**8 TO_ADDRESS = "bridges@torproject.org" MESSAGE_TEMPLATE = """From: %s To: %s @@ -32,6 +36,7 @@ get bridges""" LOCAL_SMTP_SERVER_ADDRESS = 'localhost' LOCAL_SMTP_SERVER_PORT = 2525 # Must be the same as bridgedb's EMAIL_SMTP_PORT

+ class EmailServer(SMTPServer): def process_message(self, peer, mailfrom, rcpttos, data): ''' Overridden from SMTP server, called whenever a message is received''' @@ -42,34 +47,42 @@ class EmailServer(SMTPServer): until the _stop Event object is set by the stop() function''' while self._stop.is_set() == False: asyncore.loop(timeout=0.0, count=1) - # must close, or asyncore will hold on to the socket and subsequent tests will fail with 'Address not in use' + # Must close, or asyncore will hold on to the socket and subsequent + # tests will fail with 'Address not in use'. self.close()

def start(self): self.message_queue = Queue.Queue() self._stop = threading.Event() self._thread = threading.Thread(target=self.thread_proc) - self._thread.setDaemon(True) # ensures that if any tests do fail, then threads will exit when the parent exits + # Ensures that if any tests do fail, then threads will exit when the + # parent exits. + self._thread.setDaemon(True) self._thread.start()

@classmethod def startServer(cls): - #print("Starting SMTP server on %s:%s" % (LOCAL_SMTP_SERVER_ADDRESS, LOCAL_SMTP_SERVER_PORT)) - server = EmailServer((LOCAL_SMTP_SERVER_ADDRESS, LOCAL_SMTP_SERVER_PORT), None) + #print("Starting SMTP server on %s:%s" + # % (LOCAL_SMTP_SERVER_ADDRESS, LOCAL_SMTP_SERVER_PORT)) + server = EmailServer((LOCAL_SMTP_SERVER_ADDRESS, + LOCAL_SMTP_SERVER_PORT), + None) server.start() return server

def stop(self): - # signal thread_proc to stop + # Signal thread_proc to stop: self._stop.set() - # wait for thread_proc to return (shouldn't take long) + # Wait for thread_proc to return (shouldn't take long) self._thread.join() assert self._thread.is_alive() == False, "Thread is alive and kicking"

def getAndCheckMessageContains(self, text, timeoutInSecs=2.0): #print("Checking for reponse") message = self.message_queue.get(block=True, timeout=timeoutInSecs) - assert message.find(text) != -1, "Message did not contain text "%s". Full message is:\n %s" % (text, message) + assert message.find(text) != -1, ("Message did not contain text '%s'." + "Full message is:\n %s" + % (text, message))

def checkNoMessageReceived(self, timeoutInSecs=2.0): try: @@ -79,27 +92,36 @@ class EmailServer(SMTPServer): assert False, "Found a message in the queue, but expected none"

def sendMail(fromAddress): - #print("Connecting to %s:%d" % (BRIDGEDB_SMTP_SERVER_ADDRESS, BRIDGEDB_SMTP_SERVER_PORT)) - client = smtplib.SMTP(BRIDGEDB_SMTP_SERVER_ADDRESS, BRIDGEDB_SMTP_SERVER_PORT) + #print("Connecting to %s:%d" + # % (BRIDGEDB_SMTP_SERVER_ADDRESS, BRIDGEDB_SMTP_SERVER_PORT)) + client = smtplib.SMTP(BRIDGEDB_SMTP_SERVER_ADDRESS, + BRIDGEDB_SMTP_SERVER_PORT) client.set_debuglevel(SMTP_DEBUG_LEVEL)

- #print("Sending mail TO:%s, FROM:%s" % (TO_ADDRESS, fromAddress)) - result = client.sendmail(fromAddress, TO_ADDRESS, MESSAGE_TEMPLATE % (fromAddress, TO_ADDRESS)) + #print("Sending mail TO:%s, FROM:%s" + # % (TO_ADDRESS, fromAddress)) + result = client.sendmail(fromAddress, TO_ADDRESS, + MESSAGE_TEMPLATE % (fromAddress, TO_ADDRESS)) assert result == {}, "Failed to send mail" client.quit()

+ class SMTPTests(unittest.TestCase): def setUp(self): - ''' Called at the start of each test, ensures that the SMTP server is running''' + '''Called at the start of each test, ensures that the SMTP server is + running. + ''' self.server = EmailServer.startServer()

def tearDown(self): - ''' Called after each test, ensures that the SMTP server is cleaned up''' + '''Called after each test, ensures that the SMTP server is cleaned up. + ''' self.server.stop()

def test_getBridges(self): # send the mail to bridgedb, choosing a random email address - sendMail(fromAddress=FROM_ADDRESS_TEMPLATE % random.randint(MIN_FROM_ADDRESS, MAX_FROM_ADDRESS)) + sendMail(fromAddress=FROM_ADDRESS_TEMPLATE + % random.randint(MIN_FROM_ADDRESS, MAX_FROM_ADDRESS))

# then check that our local SMTP server received a response # and that response contained some bridges @@ -107,7 +129,8 @@ class SMTPTests(unittest.TestCase):

def test_getBridges_rateLimitExceeded(self): # send the mail to bridgedb, choosing a random email address - FROM_ADDRESS = FROM_ADDRESS_TEMPLATE % random.randint(MIN_FROM_ADDRESS, MAX_FROM_ADDRESS) + FROM_ADDRESS = FROM_ADDRESS_TEMPLATE % random.randint( + MIN_FROM_ADDRESS, MAX_FROM_ADDRESS) sendMail(FROM_ADDRESS)

# then check that our local SMTP server received a response @@ -118,7 +141,8 @@ class SMTPTests(unittest.TestCase): sendMail(FROM_ADDRESS)

# this time, the email response should not contain any bridges - self.server.getAndCheckMessageContains("You have exceeded the rate limit. Please slow down!") + self.server.getAndCheckMessageContains( + "You have exceeded the rate limit. Please slow down!")

# then we send another request from the same email address sendMail(FROM_ADDRESS) @@ -127,13 +151,17 @@ class SMTPTests(unittest.TestCase): self.server.checkNoMessageReceived(timeoutInSecs=1.0)

def test_getBridges_stressTest(self): - ''' Sends a large number of emails in a short period of time, and checks that - a response is received for each message ''' + '''Sends a large number of emails in a short period of time, and checks + that a response is received for each message. + ''' NUM_MAILS = 100 for i in range(NUM_MAILS): - # Note: if by chance two emails with the same FROM_ADDRESS are generated, this test will fail - # Setting 'MAX_FROM_ADDRESS' to be a high value reduces the probability of this occuring, but does not rule it out - sendMail(fromAddress=FROM_ADDRESS_TEMPLATE % random.randint(MIN_FROM_ADDRESS, MAX_FROM_ADDRESS)) + # Note: if by chance two emails with the same FROM_ADDRESS are + # generated, this test will fail Setting 'MAX_FROM_ADDRESS' to be + # a high value reduces the probability of this occuring, but does + # not rule it out + sendMail(fromAddress=FROM_ADDRESS_TEMPLATE + % random.randint(MIN_FROM_ADDRESS, MAX_FROM_ADDRESS))

for i in range(NUM_MAILS): self.server.getAndCheckMessageContains("Here are your bridges")