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django-testdata-1.0.3
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مشاهده بیشترتوضیحات
Django application providing isolation for model instances created during `setUpTestData`.
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | django-testdata-1.0.3 |
| نام | django-testdata |
| نسخه کتابخانه | 1.0.3 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Simon Charette. |
| ایمیل نویسنده | charette.s+testdata@gmail.com |
| آدرس صفحه اصلی | https://github.com/charettes/django-testdata |
| آدرس اینترنتی | https://pypi.org/project/django-testdata/ |
| مجوز | MIT |
django-testdata
===============
.. image:: https://img.shields.io/pypi/l/django-testdata.svg?style=flat
:target: https://pypi.python.org/pypi/django-testdata/
:alt: License
.. image:: https://img.shields.io/pypi/v/django-testdata.svg?style=flat
:target: https://pypi.python.org/pypi/django-testdata/
:alt: Latest Version
.. image:: https://img.shields.io/github/workflow/status/charettes/django-testdata/CI/master
:target: https://github.com/charettes/django-testdata/actions?workflow=CI
.. image:: https://coveralls.io/repos/charettes/django-testdata/badge.svg?branch=master
:target: https://coveralls.io/r/charettes/django-testdata?branch=master
:alt: Coverage Status
.. image:: https://img.shields.io/pypi/pyversions/django-testdata.svg?style=flat
:target: https://pypi.python.org/pypi/django-testdata/
:alt: Supported Python Versions
.. image:: https://img.shields.io/pypi/wheel/django-testdata.svg?style=flat
:target: https://pypi.python.org/pypi/django-testdata/
:alt: Wheel Status
Django application providing isolation for model instances created during
`setUpTestData`.
**Note:** This package has been merged into Django and released in version
3.2 (see `PR #12608 <https://github.com/django/django/pull/12608>`__).
Installation
------------
.. code:: sh
pip install django-testdata
Motivation
----------
Django 1.8 introduced ``TestCase.setUpTestData`` to allow costly generation of
model fixtures to be executed only once per test class in order to speed up
testcase instances execution.
One gotcha of ``setUpTestData`` though is that test instances all share the same
model instances and have to be careful not to alter them to prevent breaking
test isolation. Per Django's `documentation`_::
Be careful not to modify any objects created in setUpTestData() in your
test methods. Modifications to in-memory objects from setup work done at
the class level will persist between test methods. If you do need to modify
them, you could reload them in the setUp() method with refresh_from_db(),
for example.
Reloading objects in ``setUp()`` certainly works but it kind of defeats the
purpose of avoiding database hits to speed up tests execution in the first
place. It makes little sense to fetch model instances from the database
given all the data is available in memory.
This package offers a different alternative to work around this quirk of
``setUpTestData``. Instead of reloading objects from the database the model
instances assigned as class attributes during ``setUpTestData`` are lazily deep
copied on test case instance accesses. All deep copying during a test is done
with a shared `memo`_ which makes sure in-memory relationships between objects
are preserved.
.. _documentation: https://docs.djangoproject.com/en/2.1/topics/testing/tools/#django.test.TestCase.setUpTestData
.. _memo: https://docs.python.org/3/library/copy.html?highlight=memo#copy.deepcopy
Usage
-----
The test data can be either wrapped manually by using ``testdata``:
.. code:: python
from django.test import TestCase
from testdata import testdata
from .models import Author, Book
class BookTests(TestCase):
@classmethod
def setUpTestData(cls):
cls.author = testdata(Author.objects.create(
name='Milan Kundera',
))
cls.book = testdata(cls.author.books.create(
title='Nesnesitelná lehkost bytí',
))
Or automatically by using the ``wrap_testdata`` decorator:
.. code:: python
from django.test import TestCase
from testdata import wrap_testdata
from .models import Author, Book
class BookTests(TestCase):
@classmethod
@wrap_testdata
def setUpTestData(cls):
cls.author = Author.objects.create(
name='Milan Kundera',
)
cls.book = cls.author.books.create(
title='Nesnesitelná lehkost bytí',
)
Under the hood ``wrap_testdata`` wraps all attributes added to ``cls``
during the execution of ``setUpTestData()`` into ``testdata(attr, name=name)``.
Once test data is wrapped the testcase instance methods can alter objects
retrieved from ``self`` without worrying about cross-tests isolation:
.. code:: python
from django.test import TestCase
from testdata import wrap_testdata
from .models import Author, Book
class BookTests(TestCase):
@classmethod
@wrap_testdata
def setUpTestData(cls):
cls.author = Author.objects.create(
name='Milan Kundera',
)
cls.book = cls.author.books.create(
title='Nesnesitelná lehkost bytí',
)
def test_book_name_english(self):
self.assertEqual(self.book.title, 'Nesnesitelná lehkost bytí')
self.book.title = 'The Unbearable Lightness of Being'
self.book.save()
def test_book_name_french(self):
self.assertEqual(self.book.title, 'Nesnesitelná lehkost bytí')
self.book.title = "L'Insoutenable Légèreté de l'être"
self.book.save()
نیازمندی
| مقدار | نام |
|---|---|
| >=1.11 | Django |
| - | tox |
نحوه نصب
نصب پکیج whl django-testdata-1.0.3:
pip install django-testdata-1.0.3.whl
نصب پکیج tar.gz django-testdata-1.0.3:
pip install django-testdata-1.0.3.tar.gz