“尚未加载应用".尝试运行pytest-django时 [英] "Apps aren't loaded yet" when trying to run pytest-django
问题描述
使用 Django教程中的(部分)民意调查应用例如,我正在尝试运行 pytest-django .
Using the (partial) polls app from the Django tutorial as an example, I'm trying to get pytest-django to run.
使用命令 django-admin startproject mysite2
,我创建了一个具有以下结构的项目目录:
Using the command django-admin startproject mysite2
, I've created a project directory with the following structure:
.
├── db.sqlite3
├── manage.py
├── mysite2
│ ├── __init__.py
│ ├── settings.py
│ ├── urls.py
│ └── wsgi.py
├── polls
│ ├── __init__.py
│ ├── admin.py
│ ├── apps.py
│ ├── migrations
│ │ ├── 0001_initial.py
│ │ └── __init__.py
│ ├── models.py
│ ├── tests.py
│ ├── urls.py
│ └── views.py
└── pytest.ini
我的 pytest.ini
看起来像
[pytest]
DJANGO_SETTINGS_MODULE = mysite2.settings
python_files = tests.py test_*.py *_tests.py
在教程之后,我在 polls/models.py
中创建了 Question
和 Choice
模型:
Following the tutorial, in polls/models.py
I've created Question
and Choice
models:
import datetime
from django.db import models
from django.utils import timezone
class Question(models.Model):
question_text = models.CharField(max_length=200)
pub_date = models.DateTimeField('date published')
def __str__(self):
return self.question_text
def was_published_recently(self):
return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
class Choice(models.Model):
question = models.ForeignKey(Question, on_delete=models.CASCADE)
choice_text = models.CharField(max_length=200)
votes = models.IntegerField(default=0)
def __str__(self):
return self.choice_text
现在,如果我按照本教程中的说明进行 tests.py
的创建,该教程基于Python的内置 unittest
模块,
Now, if I make tests.py
as described in the tutorial, which is based on Python's built-in unittest
module,
import datetime
from django.utils import timezone
from django.test import TestCase
from .models import Question
class QuestionModelTests(TestCase):
def test_was_published_recently_with_future_question(self):
time = timezone.now() + datetime.timedelta(days=30)
future_question = Question(pub_date=time)
self.assertIs(future_question.was_published_recently(), False)
并且我从命令行运行 python manage.py test
,测试失败了:
and I run python manage.py test
from the command line, the test fails expected:
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
F
======================================================================
FAIL: test_was_published_recently_with_future_question (polls.tests.QuestionModelTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/Users/kurtpeek/Documents/Scratch/mysite2/polls/tests.py", line 23, in test_was_published_recently_with_future_question
self.assertIs(future_question.was_published_recently(), False)
AssertionError: True is not False
----------------------------------------------------------------------
Ran 1 test in 0.001s
FAILED (failures=1)
Destroying test database for alias 'default'...
但是,如果我将测试代码更改为(尝试过的) pytest
等效项(也就是说,无需子类化 TestCase
并具有普通的断言):
However, if I change the testing code to the (attempted) pytest
equivalent (that is, without having to subclass TestCase
and with ordinary assertions):
def test_was_published_recently_with_future_question():
time = timezone.now() + datetime.timedelta(days=30)
future_question = Question(pub_date=time)
assert future_question.was_published_recently() is False
并运行 pytest
命令,出现以下错误:
and run the pytest
command, I get the following error:
================================= test session starts ==================================
platform darwin -- Python 3.6.3, pytest-3.2.3, py-1.4.34, pluggy-0.4.0
rootdir: /Users/kurtpeek/Documents/Scratch/mysite2, inifile: pytest.ini
plugins: timeout-1.2.1
collected 0 items / 1 errors
======================================== ERRORS ========================================
___________________________ ERROR collecting polls/tests.py ____________________________
polls/tests.py:10: in <module>
from .models import Question
polls/models.py:6: in <module>
class Question(models.Model):
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/models/base.py:100: in __new__
app_config = apps.get_containing_app_config(module)
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/apps/registry.py:244: in get_containing_app_config
self.check_apps_ready()
/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/apps/registry.py:127: in check_apps_ready
raise AppRegistryNotReady("Apps aren't loaded yet.")
E django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!
=============================== 1 error in 0.64 seconds ================================
到目前为止,我还没有找到解决此问题的方法.有关如何运行测试的任何想法?
So far I haven't been able to find a way to fix this. Any ideas on how to get the test to run?
推荐答案
开箱即用,即使使用 pytest-django
pytest 也不了解Django数据库.>已安装.不过请不要担心: pytest-django
使您的测试使用其
Out of the box, pytest
doesn't know about the Django database, even with pytest-django
installed. Never fear, though: pytest-django
makes it easy for your tests to access the Django database using its django_db pytest mark.
尝试一下:
import pytest
@pytest.mark.django_db
def test_was_published_recently_with_future_question():
time = timezone.now() + datetime.timedelta(days=30)
future_question = Question(pub_date=time)
assert future_question.was_published_recently() is False
这篇关于“尚未加载应用".尝试运行pytest-django时的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!