In my previous question I asked about testing applications that use a
publish-subscribe mechanism. I've done a simple app and tester to prove I can
make it work. I'm posting it here in case it might help someone else. I'd also
like to invite critique as this is my first attempt at using py.test. (I'll be
doing a *lot* of this when I test my real application.)
Thanks,
Michael
--- The app being tested --------------------------------
# FILE: myapp.py
from wx.lib.pubsub import Publisher
myTestTopic = "my_test_topic" # A publisher topic
def DoSomething():
# Send a message with a tuple of data
Publisher.sendMessage(myTestTopic, (1,2,3))
--- The app being tested --------------------------------
# FILE: test_myapp.py
from wx.lib.pubsub import Publisher # wxPython publish-subscribe module
from myapp import DoSomething, myTestTopic # myapp.py
# If someone can tell me how to not need these module-level
# globals I'm all ears
gotTestTopic = False # Indicates we received the test topic message
testTopicData = None # The data we got with the test topic message
def setup_module(module):
'''This sets certain state specific to the execution of this module.'''
# Subscribe to the test topic message
Publisher.subscribe(TestTopicReceiver, myTestTopic)
def test_DoSomething():
assert not gotTestTopic # Make sure there is no trickery
assert testTopicData is None
DoSomething() # This is "myapp"
assert gotTestTopic # Now we should have it
assert len(testTopicData) == 3 # Verify the data also
def TestTopicReceiver(msg):
'''Receives the test topic message and sets global vars to be read in
the test routine.'''
global gotTestTopic, testTopicData
if msg.topic[0] == myTestTopic: # Make sure it's really our topic
gotTestTopic = True
testTopicData = msg.data # The data payload in the msg
--- End ----
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