147 lines
5.3 KiB
Python
147 lines
5.3 KiB
Python
from __future__ import absolute_import
|
|
|
|
from django.test import TestCase
|
|
from django.db.models.signals import pre_save, post_save
|
|
from .models import Person, Employee, ProxyEmployee, Profile, Account
|
|
|
|
|
|
class UpdateOnlyFieldsTests(TestCase):
|
|
def test_update_fields_basic(self):
|
|
s = Person.objects.create(name='Sara', gender='F')
|
|
self.assertEqual(s.gender, 'F')
|
|
|
|
s.gender = 'M'
|
|
s.name = 'Ian'
|
|
s.save(update_fields=['name'])
|
|
|
|
s = Person.objects.get(pk=s.pk)
|
|
self.assertEqual(s.gender, 'F')
|
|
self.assertEqual(s.name, 'Ian')
|
|
|
|
def test_update_fields_m2m(self):
|
|
profile_boss = Profile.objects.create(name='Boss', salary=3000)
|
|
e1 = Employee.objects.create(name='Sara', gender='F',
|
|
employee_num=1, profile=profile_boss)
|
|
|
|
a1 = Account.objects.create(num=1)
|
|
a2 = Account.objects.create(num=2)
|
|
|
|
e1.accounts = [a1,a2]
|
|
|
|
with self.assertRaises(ValueError):
|
|
e1.save(update_fields=['accounts'])
|
|
|
|
def test_update_fields_inheritance(self):
|
|
profile_boss = Profile.objects.create(name='Boss', salary=3000)
|
|
profile_receptionist = Profile.objects.create(name='Receptionist', salary=1000)
|
|
|
|
e1 = Employee.objects.create(name='Sara', gender='F',
|
|
employee_num=1, profile=profile_boss)
|
|
|
|
e1.name = 'Ian'
|
|
e1.gender = 'M'
|
|
e1.save(update_fields=['name'])
|
|
|
|
e2 = Employee.objects.get(pk=e1.pk)
|
|
self.assertEqual(e2.name, 'Ian')
|
|
self.assertEqual(e2.gender, 'F')
|
|
self.assertEqual(e2.profile, profile_boss)
|
|
|
|
e2.profile = profile_receptionist
|
|
e2.name = 'Sara'
|
|
e2.save(update_fields=['profile'])
|
|
|
|
e3 = Employee.objects.get(pk=e1.pk)
|
|
self.assertEqual(e3.name, 'Ian')
|
|
self.assertEqual(e3.profile, profile_receptionist)
|
|
|
|
def test_update_fields_inheritance_with_proxy_model(self):
|
|
profile_boss = Profile.objects.create(name='Boss', salary=3000)
|
|
profile_receptionist = Profile.objects.create(name='Receptionist', salary=1000)
|
|
|
|
e1 = ProxyEmployee.objects.create(name='Sara', gender='F',
|
|
employee_num=1, profile=profile_boss)
|
|
|
|
e1.name = 'Ian'
|
|
e1.gender = 'M'
|
|
e1.save(update_fields=['name'])
|
|
|
|
e2 = ProxyEmployee.objects.get(pk=e1.pk)
|
|
self.assertEqual(e2.name, 'Ian')
|
|
self.assertEqual(e2.gender, 'F')
|
|
self.assertEqual(e2.profile, profile_boss)
|
|
|
|
e2.profile = profile_receptionist
|
|
e2.name = 'Sara'
|
|
e2.save(update_fields=['profile'])
|
|
|
|
e3 = ProxyEmployee.objects.get(pk=e1.pk)
|
|
self.assertEqual(e3.name, 'Ian')
|
|
self.assertEqual(e3.profile, profile_receptionist)
|
|
|
|
def test_update_fields_signals(self):
|
|
p = Person.objects.create(name='Sara', gender='F')
|
|
pre_save_data = []
|
|
def pre_save_receiver(**kwargs):
|
|
pre_save_data.append(kwargs['update_fields'])
|
|
pre_save.connect(pre_save_receiver)
|
|
post_save_data = []
|
|
def post_save_receiver(**kwargs):
|
|
post_save_data.append(kwargs['update_fields'])
|
|
post_save.connect(post_save_receiver)
|
|
p.save(update_fields=['name'])
|
|
self.assertEqual(len(pre_save_data), 1)
|
|
self.assertEqual(len(pre_save_data[0]), 1)
|
|
self.assertTrue('name' in pre_save_data[0])
|
|
self.assertEqual(len(post_save_data), 1)
|
|
self.assertEqual(len(post_save_data[0]), 1)
|
|
self.assertTrue('name' in post_save_data[0])
|
|
|
|
def test_update_fields_incorrect_params(self):
|
|
s = Person.objects.create(name='Sara', gender='F')
|
|
|
|
with self.assertRaises(ValueError):
|
|
s.save(update_fields=['first_name'])
|
|
|
|
with self.assertRaises(ValueError):
|
|
s.save(update_fields="name")
|
|
|
|
def test_empty_update_fields(self):
|
|
s = Person.objects.create(name='Sara', gender='F')
|
|
pre_save_data = []
|
|
def pre_save_receiver(**kwargs):
|
|
pre_save_data.append(kwargs['update_fields'])
|
|
pre_save.connect(pre_save_receiver)
|
|
post_save_data = []
|
|
def post_save_receiver(**kwargs):
|
|
post_save_data.append(kwargs['update_fields'])
|
|
post_save.connect(post_save_receiver)
|
|
# Save is skipped.
|
|
with self.assertNumQueries(0):
|
|
s.save(update_fields=[])
|
|
# Signals were skipped, too...
|
|
self.assertEqual(len(pre_save_data), 0)
|
|
self.assertEqual(len(post_save_data), 0)
|
|
|
|
def test_num_queries_inheritance(self):
|
|
s = Employee.objects.create(name='Sara', gender='F')
|
|
s.employee_num = 1
|
|
s.name = 'Emily'
|
|
with self.assertNumQueries(1):
|
|
s.save(update_fields=['employee_num'])
|
|
s = Employee.objects.get(pk=s.pk)
|
|
self.assertEqual(s.employee_num, 1)
|
|
self.assertEqual(s.name, 'Sara')
|
|
s.employee_num = 2
|
|
s.name = 'Emily'
|
|
with self.assertNumQueries(1):
|
|
s.save(update_fields=['name'])
|
|
s = Employee.objects.get(pk=s.pk)
|
|
self.assertEqual(s.name, 'Emily')
|
|
self.assertEqual(s.employee_num, 1)
|
|
# A little sanity check that we actually did updates...
|
|
self.assertEqual(Employee.objects.count(), 1)
|
|
self.assertEqual(Person.objects.count(), 1)
|
|
with self.assertNumQueries(2):
|
|
s.save(update_fields=['name', 'employee_num'])
|