Question

有没有办法使用connections连接到django测试数据库？

我试过了 cursor = connections['test_name_of_main_db'].cursor() 并在设置中指定了测试数据库名称，但仍然收到错误：

Traceback (most recent call last):


File "/home/tets/4d/lib/python3.5/site-packages/django/db/utils.py", line 176, in ensure_defaults


  conn = self.databases[alias]
KeyError: 'auto_tests'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):



     File "/home/tets/healthware_server/component/medical/tests.py", line 72, in test_model_observation
cursor = connections['auto_tests'].cursor()
     File "/home/tets/4d/lib/python3.5/site-packages/django/db/utils.py", line 208, in __getitem__ self.ensure_defaults(alias)
     File "/home/tets/4d/lib/python3.5/site-packages/django/db/utils.py", line 178, in ensure_defaults
raise ConnectionDoesNotExist("The connection %s doesn't exist" % alias)

django.db.utils.ConnectionDoesNotExist: The connection auto_tests doesn't exist

Answer 1

根据docs：

默认测试数据库名称是通过将test_添加到DATABASES中每个NAME的值来创建的。

但是在你的stacktrace中错误说：

django.db.utils.ConnectionDoesNotExist: The connection auto_tests doesn't exist

您确定使用正确的别名吗？根据错误，它正在寻找名为auto_tests的数据库。

作为另一个调试步骤，您可以在测试期间打印所有别名以查看哪些别名可用

for alias in connections:
    print(alias)

当然，您也可以尝试使用默认数据库，看看它在测试期间是否适用于您：

# note that it is 'connection' and not 'connections'
from django.db import connection
cursor = connection.cursor()

连接到Django测试数据库

1 个答案: