Why am I getting a 'ProgrammingError: relation "auth_user" does not exist' exception when running tests?

Question

最近我将一个 Django 项目从 1.9.1 版本迁移到 3.2.7。

现在我正在尝试编写一些新测试，但遇到了这个错误：

# python manage.py test
Creating test database for alias 'default'...
Got an error creating the test database: database "test_django" already exists

Type 'yes' if you would like to try deleting the test database 'test_django', or 'no' to cancel: yes
Destroying old test database for alias 'default'...
Traceback (most recent call last):
  File "/opt/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 84, in _execute
    return self.cursor.execute(sql, params)
psycopg2.errors.UndefinedTable: relation "auth_user" does not exist

我明白这是因为目前我没有任何 'migrations' 目录，因为我克隆了 git 存储库并且当 Django 项目在运行时数据库已经存在版本 1.9.1.

我读过：

.
Also this one.
.

他们都推荐运行迁移，但是：

# python manage.py makemigrations 
No changes detected
# python manage.py makemigrations auth
No changes detected in app 'auth'

同样，我认为这是因为数据库架构在升级到 3.2 之前已经存在。

我似乎无法解决问题运行迁移方法。

有没有其他方法可以解决这个问题，或者即使数据库已经存在并且已同步（并且可能伪造它们）也强制生成迁移？

Answer 1

If the error is because of the migrations you can skip the migration errors while running tests by using the following django library

django-test-without-migrations ( pip install django-test-without-migrations)

安装库并添加到INSTALLED_APPS (settings.py)

Then run, python manage.py test --nomigrations

参考：https://pypi.org/project/django-test-without-migrations/

Why am I getting a 'ProgrammingError: relation "auth_user" does not exist' exception when running tests?

Why am I getting a 'ProgrammingError: relation "auth_user" does not exist' exception when running tests?

django

django-tests

django-3.2