On 11/2/07, Manoj Govindan <[EMAIL PROTECTED]> wrote: > > One of my applications has a view that uses a random number generator. > I am having some trouble passing a mock random generator to the view > for testing purposes. > I am relying on the mock object to get predictable results for testing > the view's logic. ... > Are there any better ways to achieve what I am trying to do?
Django demonstrates at least one example of an alternative in its own test framework, through the way that email is handled during testing. If you have a view that sends email, you don't really want that email to go out into the world every time you run your tests. On top of that, it's helpful to be able to check that the correct email was sent to the right recipient - but that's hard to do when the evidence is sitting in someone elses mailbox. So, Django installs a mock email service. During test setup (see setup_test_environment() in django/test/utils.py), Django replaces the SMTPConnection object with a testing mock implementation. This mock has the same interface, but logs all sent mail to a local store that can be inspected. At the end of testing, the mock is removed (in teardown_test_environment()) These setup/teardown methods are invoked as part of the run_tests implementation in django.test.simple. If you have your own mocking requirements, you can define your own test runner (extending or duplicating the base implementation), and modify settings.TEST_RUNNER to point to your version. So - back to your problem - you could write your own setup/teardown method, which dynamically replaces the random number generator with a mock, and write a custom test runner that invokes your setup/teardown. No need to dirty your views with test-specific features - the tests run in a mocked test environment. Yours, Russ Magee %-) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
