django/tests/modeltests/model_formsets/tests.py

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from django.test import TestCase
from django.forms.models import modelformset_factory
from modeltests.model_formsets.models import Poet, Poem
class DeletionTests(TestCase):
def test_deletion(self):
PoetFormSet = modelformset_factory(Poet, can_delete=True)
poet = Poet.objects.create(name='test')
data = {
'form-TOTAL_FORMS': u'1',
'form-INITIAL_FORMS': u'1',
'form-0-id': u'1',
'form-0-name': u'test',
'form-0-DELETE': u'on',
}
formset = PoetFormSet(data, queryset=Poet.objects.all())
formset.save()
self.assertTrue(formset.is_valid())
self.assertEqual(Poet.objects.count(), 0)
def test_add_form_deletion_when_invalid(self):
"""
Make sure that an add form that is filled out, but marked for deletion
doesn't cause validation errors.
"""
PoetFormSet = modelformset_factory(Poet, can_delete=True)
data = {
'form-TOTAL_FORMS': u'1',
'form-INITIAL_FORMS': u'0',
'form-0-id': u'',
'form-0-name': u'x' * 1000,
}
formset = PoetFormSet(data, queryset=Poet.objects.all())
# Make sure this form doesn't pass validation.
self.assertEqual(formset.is_valid(), False)
self.assertEqual(Poet.objects.count(), 0)
# Then make sure that it *does* pass validation and delete the object,
# even though the data isn't actually valid.
data['form-0-DELETE'] = 'on'
formset = PoetFormSet(data, queryset=Poet.objects.all())
self.assertEqual(formset.is_valid(), True)
formset.save()
self.assertEqual(Poet.objects.count(), 0)
def test_change_form_deletion_when_invalid(self):
"""
Make sure that an add form that is filled out, but marked for deletion
doesn't cause validation errors.
"""
PoetFormSet = modelformset_factory(Poet, can_delete=True)
poet = Poet.objects.create(name='test')
data = {
'form-TOTAL_FORMS': u'1',
'form-INITIAL_FORMS': u'1',
'form-0-id': u'1',
'form-0-name': u'x' * 1000,
}
formset = PoetFormSet(data, queryset=Poet.objects.all())
# Make sure this form doesn't pass validation.
self.assertEqual(formset.is_valid(), False)
self.assertEqual(Poet.objects.count(), 1)
# Then make sure that it *does* pass validation and delete the object,
# even though the data isn't actually valid.
data['form-0-DELETE'] = 'on'
formset = PoetFormSet(data, queryset=Poet.objects.all())
self.assertEqual(formset.is_valid(), True)
formset.save()
self.assertEqual(Poet.objects.count(), 0)