Testing Pyramid applications Pyramid London // James Cooke 

Pyramid layout YourApp View YourApp Code: Models Forms etc Templating / render DB FS Events Routing / View Lookup WSGI App View callable 

doctest ● Good for: ○ Models ○ Form schemas ○ Basic app logic ● Modules: ○ from mock import Mock ○ SQLAlchemy sessions ○ from pyramid.testing import DummyRequest 

doctest Pyramid layout YourApp View YourApp Code: Models Forms etc Templating / render DB FS Events Routing / View Lookup WSGI App View callable Now with doctest request response 

unit test ● Good for: ○ Basic views ○ Models ○ Basic app logic ● Warning signs: ○ Pyramid events ○ View needs specific code to be tested 

unit test doctest Pyramid layout YourApp View YourApp Code: Models Forms etc Templating / render DB FS Events Routing / View Lookup WSGI App View callable Now with doctest and unitest 

integration test ● Good for: ○ Views - request in, response out ○ Events! ○ Real app logic ● Warning signs: ○ Monolithic tests ○ Repeating code 

integration test unit test doctest Pyramid layout YourApp View YourApp Code: Models Forms etc Templating / render DB FS Events Routing / View Lookup WSGI App View callable Now with doctest, unitest, integration test 

unit / integration tips ● Build 'good request' ● Make sure events are wired in ● Use real database and sessions ● Context might not be None 

wish 1: better permission testing from pyramid.httpexceptions import HTTPForbidden from my.package import view_fn self.config.testing_securitypolicy(userid='hank', permissive=False) request = testing.DummyRequest() request.context = testing.DummyResource() self.assertRaises(HTTPForbidden, view_fn, request) 

wish 2: Better SQLAlchemy tm transaction.manager wrap on views to write data when call is finished. DetachedInstanceError: Parent instance is not bound to a Session; lazy load operation of attribute 'roles' cannot proceed 

wish 3: Routing - how to test?! ● Order of calls to pyramid.config. Configurator.add_route() matter ● This should be programmatically testable! ● Currently request.route_url() and check result. 

functional test routing test integration test unit test doctest Pyramid layout YourApp View YourApp Code: Models Forms etc Templating / render DB FS Events Routing / View Lookup WSGI App View callable 

functional tips ● Use BDD (behaviour driven development) ● behave seems like a good library ● Mako rendering exceptions can die 

functional test routing test integration test unit test doctest Pyramid testing 100% YourApp View YourApp Code: Models Forms etc Templating / render DB FS Events Routing / View Lookup WSGI App View callable 

thanks for listening ● Any questions? ● @jamesfublo