Тестирование и Django
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The document discusses testing methodologies in Django, focusing on regression testing and functional testing principles. It highlights various testing techniques, including unit testing, smoke testing, and the use of mocks, along with examples and best practices. Additionally, it touches on integration with continuous testing tools and emphasizes the importance of testing coverage without making it an obsession.
![django.test.сlient.RequestFactory
def
test_post_ok(self):
request
=
RequestFactory().post(reverse('ch_location'),
{'location_id':
77})
request.cookies
=
{}
response
=
change_location(request)
self.assertEqual(response.cookies['LOCATION'].value,
'77')
self.assertEqual(response.status_code,
302)](https://image.slidesharecdn.com/testingdjango-121025084709-phpapp02/85/Django-12-320.jpg)
Тестирование и Django
- 1. Тестирование и Django Илья Барышев @coagulant Moscow Django Meetup №6
- 3. Быстрые изменения в коде
- 4. Меняет подход к написанию кода
- 5. Пойдёт на пользу вашему проекту
- 7. def test_vin_is_valid(self): valid_vins = ('2G1FK1EJ7B9141175', '11111111111111111',) for valid_vin in valid_vins: self.assertEqual(vin_validator(valid_vin), None) def test_vin_is_invalid(self): invalid_vins = ('abc', u'M05C0WDJAN60M33TUP6',) for invalid_vin in invalid_vins: self.assertRaises(ValidationError, vin_validator, invalid_vin)
- 8. Unittest Модели Контекст-процессоры Формы Middleware Views? Template tags, filters
- 9. Тестируйте поведение А не имплементацию
- 11. django.test.client.Client def testPostAsAuthenticatedUser(self): data = self.getValidData(Article.objects.get(pk=1)) self.client.login(username="normaluser", password="normaluser") self.response = self.client.post("/post/", data) self.assertEqual(self.response.status_code, 302) self.assertEqual(Comment.objects.count(), 1)
- 12. django.test.сlient.RequestFactory def test_post_ok(self): request = RequestFactory().post(reverse('ch_location'), {'location_id': 77}) request.cookies = {} response = change_location(request) self.assertEqual(response.cookies['LOCATION'].value, '77') self.assertEqual(response.status_code, 302)
- 13. Smoke Testing
- 14. def test_password_recovery_smoke(self): """ Урлы восстановления пароля. Логика уже протестирована в django-‐password-‐reset """ response_recover = self.client.get(reverse('pass_recover')) self.assertEqual(response_recover.status_code, 200) self.assertContains(response_recover, self.assertTemplateUsed(response_recover, u'Восстановление пароля') 'password_reset/recovery_form.html')
- 15. Как мы тестируем
- 17. Покрытие важно Но не делайте из него фетиш
- 19. >>> real = SomeClass() >>> my_mock = MagicMock(name='method') >>> real.method = my_mock >>> real.method(3, 4, 5, key='value') >>> my_mock.called True >>> my_mock.call_count 1 >>> mock.method.assert_called_with(3, 4, 5) Traceback (most recent call last): ... AssertionError: Expected call: method(3, 4, 5) Actual call: method(3, 4, 5, key='value')
- 20. @patch('twitter.Api') def test_twitter_tag_simple_mock(self, ApiMock): api_instance = ApiMock.return_value api_instance.GetUserTimeline.return_value = SOME_JSON output, context = render_template( """{% load twitter_tag %} {% get_tweets for "jresig" as tweets %}""") api_instance.GetUserTimeline.assert_called_with( screen_name='jresig', include_rts=True, include_entities=True)
- 21. from mock import patch from django.conf import settings @patch.multiple(settings, APPEND_SLASH=True, MIDDLEWARE_CLASSES=(common_middleware,)) def test_flatpage_doesnt_require_trailing_slash(self): form = FlatpageForm(data=dict(url='/no_trailing_slash', **self.form_data)) self.assertTrue(form.is_valid())
- 22. from django.test.utils import override_settings @override_settings( APPEND_SLASH=False, MIDDLEWARE_CLASSES=(common_middleware,) ) def test_flatpage_doesnt_require_trailing_slash(self): form = FlatpageForm(data=dict(url='/no_trailing_slash', **self.form_data)) self.assertTrue(form.is_valid())
- 23. Фикстуры
- 24. [ { "model": "docs.documentrelease", "pk": 1, "fields": { "lang": "en", "version": "dev", "scm": "svn", "scm_url": "http://code.djangoproject.com/svn/django/trunk/docs", "is_default": false } }, { "model": "docs.documentrelease", Обычный тест с "pk": 2, фикстурами "fields": { "lang": "en", "version": "1.0", "scm": "svn", "scm_url": "http://code.djangoproject.com/svn/django/branches/releases/1.0.X/docs", "is_default": false } }, { "model": "docs.documentrelease", "pk": 3, "fields": { "lang": "en", "version": "1.1", "scm": "svn", "scm_url": "http://code.djangoproject.com/svn/django/branches/releases/1.1.X/docs", "is_default": false
- 25. django-‐any https://github.com/kmmbvnr/django-‐any from django_any import any_model class TestMyShop(TestCase): def test_order_updates_user_account(self): account = any_model(Account, amount=25, user__is_active=True) order = any_model(Order, user=account.user, amount=10) order.proceed() account = Account.objects.get(pk=account.pk) self.assertEquals(15, account.amount)
- 27. import factory from models import MyUser class UserFactory(factory.Factory): FACTORY_FOR = MyUser first_name = 'John' last_name = 'Doe' admin = False
- 28. # Инстанс, сохранённый в базу user = UserFactory.create() # Экземпляр User, не сохранённый в базу user = UserFactory.build() # Создаём инстанс с конкретыми значениями user = UserFactory.create(name=u'Василий', age=25)
- 29. class UserFactory(factory.Factory): first_name = 'Vasily' last_name = 'Pupkin' email = factory.LazyAttribute( lambda u: '{0}.{1}@example.com'.format( u.first_name, u.last_name).lower()) >>> UserFactory().email 'vasily.pupkin@example.com'
- 30. class UserWithEmailFactory(UserFactory): email = factory.Sequence( lambda n: 'person{0}@example.com'.format(n)) >>> UserFactory().email 'person0@example.com' >>> UserFactory().email 'person1@example.com'
- 31. Django test runner SUCKS
- 32. INSTALLED_APPS = ( ... #3rd-‐party apps 'south', 'sorl.thumbnail', 'pytils', 'pymorphy', 'compressor', Несколько сотен 'django_nose', тестов 'django_geoip', 'mptt', 'widget_tweaks', 'guardian', ...
- 33. /tests # -‐*-‐ coding: utf-‐8 -‐*-‐ __init__.py test_archive.py from test_archive import * test_blog_model.py from test_blog_model import * test_modified.py from test_modified import * test_post_model.py from test_post_model import * test_redactor.py from test_redactor import * test_views.py from test_views import * test_cross_post.py from test_cross_post import *
- 34. django-‐nose https://github.com/jbalogh/django-‐nose
- 35. $ pip install django-‐nose # settings.py INSTALLED_APPS = ( ... 'django_nose', ... ) TEST_RUNNER = 'django_nose.NoseTestSuiteRunner'
- 36. $ manage.py test $ manage.py test apps.comments.tests $ manage.py test apps.comments.tests:BlogTestCase $ manage.py test apps.comments.tests:BlogTestCase.test_index $ manage.py test -‐-‐with-‐ids -‐-‐failed $ manage.py -‐-‐pdb $ manage.py -‐-‐pdb-‐failures
- 37. from nose.plugins.attrib import attr @attr(speed='slow', priority=1) def test_big_download(): import urllib # commence slowness.. $ nosetests -‐a speed=slow $ nosetests -‐a '!slow' $ nosetests -‐A "(priority > 5) and not slow"
- 38. TESTING TESTING
- 39. SQLite для быстрых тестов Если ваш проект позволяет
- 40. Параллелим тесты Нетрудоёмкое ускоение
- 41. Ran 337 tests in 326.664s OK (SKIP=2) 1 процесс 326 2 процесса Секунды 169 3 процесса 126 0 100 200 300 400 $ ./manage.py -‐-‐processes=N
- 42. Спасибо за внимание baryshev@futurecolors.ru @coagulant http://blog.futurecolors.ru/