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python - Django 测试错误 : relation does not exist

转载 作者:太空狗 更新时间:2023-10-30 01:29:19 27 4
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我在 Ubuntu 13.10 和 Postgres 上使用 Django 1.6 和 Python 3.3。

我有一个模型 User 定义如下:

from django.db import models
from django.contrib.auth.models import AbstractUser

from common.mixins import TimestampMixin


class User(TimestampMixin, AbstractUser):
auth_key = models.CharField(max_length=16)

def __str__(self):
if self.first_name:
if self.last_name:
return "{0} {1}'s Profile".format(
self.first_name, self.last_name)
else:
return "{0}'s Profile".format(self.first_name)
else:
return "{0}'s Profile".format(self.username)

我对 __str __ 进行了如下测试:

from django.test import TestCase

from accounts.models import User
from common.tests.fixtureless import create_instance


class UserTest(TestCase):
def test_str(self):
initial = {
'username': 'test_username',
'first_name': 'test_first_name',
'last_name': 'test_last_name',
}
user = create_instance(User, **initial)
user.save()
expected = "test_first_name test_last_name's Profile"
self.assertEqual(user.__str__(), expected)
user.delete()

del(initial['last_name'])
user = create_instance(User, **initial)
user.save()
expected = "test_first_name's Profile"
self.assertEqual(user.__str__(), expected)
user.delete()

del(initial['first_name'])
user = create_instance(User, **initial)
user.save()
expected = "test_username's Profile"
self.assertEqual(user.__str__(), expected)
user.delete()

我可以在大约 20% 的时间内正确运行我的测试套件。但是,有时我会收到以下故障:

ERROR: test_str (blind_tiger.blind_tiger.apps.accounts.tests.UserTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: relation "accounts_user" does not exist
LINE 1: INSERT INTO "accounts_user" ("password", "last_login", "is_s...
^


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/ricomoss/workspace/ses/blind_tiger/blind_tiger/settings/../apps/accounts/tests/models.py", line 18, in test_str
user.save()
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 545, in save
force_update=force_update, update_fields=update_fields)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 573, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 654, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/base.py", line 687, in _do_insert
using=using, raw=raw)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/manager.py", line 232, in _insert
return insert_query(self.model, objs, fields, **kwargs)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/query.py", line 1511, in insert_query
return query.get_compiler(using=using).execute_sql(return_id)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/models/sql/compiler.py", line 898, in execute_sql
cursor.execute(sql, params)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/utils.py", line 99, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/utils/six.py", line 490, in reraise
raise value.with_traceback(tb)
File "/home/ricomoss/.virtualenvs/blind_tiger/lib/python3.3/site-packages/django/db/backends/util.py", line 53, in execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: relation "accounts_user" does not exist
LINE 1: INSERT INTO "accounts_user" ("password", "last_login", "is_s...

这很令人沮丧,因为如果我在有问题的 user.save() 周围放置一个 try/except 这样我就可以检查我从不的对象看到这个错误。

从不产生此错误:

try:
user.save()
except:
raise Exception(user.__dict__)

有什么建议吗?

最佳答案

尝试运行以下命令:

python manage.py migrate --run-syncdb
python manage.py makemigrations appname
python manage.py migrate

关于python - Django 测试错误 : relation does not exist,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20388328/

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