如何直接从测试驱动程序调用自定义Django manage.py命令？ [英] How can I call a custom Django manage.py command directly from a test driver?

问题描述

我想为Django manage.py命令编写一个单元测试，该命令对数据库表执行后端操作。我如何直接从代码调用管理命令？

I want to write a unit test for a Django manage.py command that does a backend operation on a database table. How would I invoke the management command directly from code?

我不想在tests.py上执行操作系统shell的命令，因为我无法使用使用manage.py test设置的测试环境测试数据库，测试虚拟电子邮件发件箱等）

I don't want to execute the command on the Operating System's shell from tests.py because I can't use the test environment set up using manage.py test (test database, test dummy email outbox, etc...)

推荐答案

测试这样的东西的最好方法 - 从命令本身独立的功能或类。它有助于从命令执行的东西中抽象出来，并在没有附加要求的情况下编写测试。

The best way to test such things - extract needed functionality from command itself to standalone function or class. It helps to abstract from "command execution stuff" and write test without additional requirements.

但是，如果由于某种原因无法解除逻辑格式命令，您可以从任何代码像这样：

But if you by some reason cannot decouple logic form command you can call it from any code like this:

from django.core.management import call_command

call_command('my_command', 'foo', bar='baz')

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