python - 为什么在Django单元测试期间我的表不可用？

Question

当我尝试运行单元测试时，出现一个错误，提示数据库中没有可用的表。一天前，我的测试运行良好，并且就此后发生的变化进行了集思广益，没有想到任何可能导致此问题的事情。

我认为这是syncdb和South在sqlite数据库中无法正确创建表的问题，并已尝试解决此问题。

带回溯的错误消息

$ ./manage.py test --settings=settings.test -v2

Creating test database for alias 'default' (':memory:')...
Syncing...
Creating tables ...
Creating table django_admin_log
Creating table auth_permission
Creating table auth_group_permissions
Creating table auth_group
Creating table django_content_type
Creating table django_session
Creating table django_site
Creating table south_migrationhistory
Installing custom SQL ...
Installing indexes ...

Synced:
 > grappelli
 > django.contrib.admin
 > django.contrib.admindocs
 > django.contrib.auth
 > django.contrib.contenttypes
 > django.contrib.messages
 > django.contrib.sessions
 > django.contrib.sites
 > django.contrib.staticfiles
 > crispy_forms
 > floppyforms
 > south
 > subdomains
 > widget_tweaks

Not synced (use migrations):
 - apps.application
 - apps.app_app
 - apps.accounts
 - apps.rampup
 - apps.students
 - apps.automated_responses
(use ./manage.py migrate to migrate these)

======================================================================
ERROR: test_can_save_form_with_clean_passwords (apps.accounts.tests.test_admin.TestCreateUserForm)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/chaz/dev/projects/si/apps/accounts/tests/test_admin.py", line 17, in setUp
    self.user = SIDummyUserFactory.create()
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/factory/base.py", line 452, in create
    attrs = cls.attributes(create=True, extra=kwargs)
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/factory/base.py", line 316, in attributes
    force_sequence=force_sequence,
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/factory/containers.py", line 263, in build
    sequence = self.factory._generate_next_sequence()
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/factory/base.py", line 287, in _generate_next_sequence
    cls._next_sequence = cls._setup_next_sequence()
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/factory/django.py", line 71, in _setup_next_sequence
    ).order_by('-pk')[0]
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/django/db/models/query.py", line 231, in __getitem__
    return list(qs)[0]
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/django/db/models/query.py", line 108, in __len__
    self._result_cache.extend(self._iter)
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/django/db/models/query.py", line 1140, in iterator
    for row in self.query.get_compiler(self.db).results_iter():
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 775, in results_iter
    for rows in self.execute_sql(MULTI):
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 840, in execute_sql
    cursor.execute(sql, params)
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 366, in execute
    six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2])
  File "/Users/chaz/dev/envs/startupinst/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 362, in execute
    return Database.Cursor.execute(self, query, params)
DatabaseError: no such table: accounts_siuser

相关设置

INSTALLED_APPS

In [2]: settings.INSTALLED_APPS  
Out[2]:
('grappelli',  
 'django.contrib.admin',  
 'django.contrib.admindocs',  
 'django.contrib.auth',  
 'django.contrib.contenttypes',  
 'django.contrib.messages',  
 'django.contrib.sessions',  
 'django.contrib.sites',  
 'django.contrib.staticfiles',  
 'crispy_forms',  
 'floppyforms',  
 'south',  
 'subdomains',  
 'widget_tweaks',  
 'gunicorn',  
 'apps.application',  
 'apps.app_app',  
 'apps.automated_responses',  
 'apps.accounts',  
 'apps.rampup',  
 'apps.students',  
 'utils.context_processors',  
 'discover_runner')  

pip freeze --local

 Django==1.5.4  
 Pygments==1.6  
 South==0.7.6  
 argparse==1.2.1  
 bpython==0.12  
 coverage==3.6  
 dj-database-url==0.2.1  
 django-braces==1.2.2  
 django-crispy-forms==1.2.2  
 django-debug-toolbar==0.9.4  
 django-discover-runner==0.4  
 django-filepicker==0.1.4  
 django-floppyforms==1.1  
 django-grappelli==2.4.4  
 django-parsley==0.0.2a0  
 django-subdomains==2.0.1  
 django-templated-email==0.4.7  
 django-widget-tweaks==1.1.2  
 envoy==0.0.2  
 factory-boy==2.1.1  
 gunicorn==0.16.1  
 ipdb==0.7  
 ipython==0.13.2  
 psycopg2==2.4.5  
 pytz==2013b  
 requests==2.0.0  
 simplejson==3.3.1  
 six==1.4.1  
 stripe==1.7.7  
 zulip==0.2.1  

设置/ test.py

""" Test settings and globals which allow us to write our tests locally."""
from .common import *

########
# APPS #
########
INSTALLED_APPS += (
    'discover_runner',
)

#################
# TEST SETTINGS #
#################
#TEST_RUNNER = 'django_pytest.test_runner.TestRunner'
TEST_RUNNER = "discover_runner.DiscoverRunner"
TEST_DISCOVER_TOP_LEVEL = PROJECT_ROOT
TEST_DISCOVER_PATTERN = "test_*"
SOUTH_TESTS_MIGRATE = False


###########################
# IN MEMORY TEST DATABASE #
###########################

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": ":memory:",
    },
}

不能解决问题的类似SO问题


Does South foul up the Django test runner framework
Disable South when running Django unit tests
Missing table when running django unittest with sqlite2


到目前为止我尝试过的


在另一个分支上运行测试，在发生这种情况的过程中没有改变
结果：得到相同的确切错误和引用
吹走我的虚拟环境并开始一个新的虚拟环境
结果：无变化

Answer 1

我最终从我的South文件*中删除了settings/test.py，并且数据库已正确创建。很想听听是否有人对此有任何想法。以下设置应禁用South，从而导致Django的syncdb创建正确的表。

SOUTH_TESTS_MIGRATE = False  
SOUTH_SKIP_TESTS = True

*我有每种环境的设置文件，因此只需将South放在需要它的文件中，而不是将它们放在它们都继承自的base.py中。