Hi,
I would like to write a test that verifies that a particular message is shown
when a model is saved in the admin that meets certain criteria (it's a warning
message).
First off I need to figure out how to post to the admin change view from test
code. I figured it would be easier to start with an existing model instance and
edit it rather than try to add a new one, so I've tried code that does the
following:
- create a new model instance and save it
- get the change view URL for it
- construct a ModelForm with the model instance
- POST to the change URL using the form's initial dictionary as data
(full code below)
The POST returns some validation errors. Is there an easy way to construct the
data that the admin change view needs? Obviously I could look at the code that
builds the form on the admin page and add a POST parameter for every input
field I find on the form, but this would require reading (and writing) a lot of
code.
As promised here's the (non-working) code I have so far:
from django.contrib import admin
from django.contrib.auth.models import User
from django.core.urlresolvers import reverse
from django.test import TestCase
from django.test.client import RequestFactory
from goway.admin import TripAdmin
from goway.models import Trip
from goway.tests.service.utils import create_trip
class TripAdminTests(TestCase):
def setUp(self):
self.factory = RequestFactory()
def test_message_when_no_derived_primary_destination(self):
# This is an attempt to create a trip and then post it unchanged to the
admin change view.
# The next step would be to check that there was a "Couldn't
automatically work out primary destination, please choose a primary destination
manually." message.
# Couldn't get the post to the trip change view to work though - got
validation errors.
old_get_inline_instances = TripAdmin.get_inline_instances
# Hack get_inline_instances() to return an empty list to avoid
ValidationError: [u'ManagementForm data is missing or has been tampered with']
TripAdmin.get_inline_instances = self.get_inline_instances
try:
user = User.objects.create_superuser('testadmin',
'nob...@devrx.org', 'secret')
self.client.login(username=user.username, password='secret')
trip = create_trip()
change_url = reverse('admin:goway_trip_change', args=(trip.pk,))
request = self.factory.get(change_url)
request.user = user
trip_admin = TripAdmin(Trip, admin.site)
form_class = trip_admin.get_form(request, trip)
form = form_class(instance=trip)
response = self.client.post(change_url, data=form.initial)
errors = response.context['adminform'].form.errors
self.assertEqual(0, len(errors), msg='Got validation errors: %s' %
errors)
messages = response.context['messages']
print messages
finally:
TripAdmin.get_inline_instances = old_get_inline_instances
def get_inline_instances(self, *args, **kwargs):
return []
...and here's the output:
Failure
Traceback (most recent call last):
File
"/Users/francis/Code/Bright/python/goway/apps/goway/tests/service/trip_admin.py",
line 41, in test_message_when_no_derived_primary_destination
self.assertEqual(0, len(errors), msg='Got validation errors: %s' % errors)
AssertionError: 0 != 7 : Got validation errors: <ul
class="errorlist"><li>map<ul class="errorlist"><li>Select a valid choice. That
choice is not one of the available choices.</li></ul></li><li>tour_itinerary<ul
class="errorlist"><li>Select a valid choice. That choice is not one of the
available choices.</li></ul></li><li>primary_destination<ul
class="errorlist"><li>Select a valid choice. That choice is not one of the
available choices.</li></ul></li><li>placeholder_page<ul
class="errorlist"><li>Select a valid choice. That choice is not one of the
available choices.</li></ul></li><li>dynamic_package<ul
class="errorlist"><li>Select a valid choice. That choice is not one of the
available choices.</li></ul></li><li>excursion<ul class="errorlist"><li>Select
a valid choice. That choice is not one of the available
choices.</li></ul></li><li>types<ul class="errorlist"><li>This field is
required.</li></ul></li></ul>
It isn't critical that I add a test for this - it's not the end of the world if
the warning message doesn't get shown - but it would be nice to know how to do
it if there's an easy way!
Thanks,
Francis
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