没有db的django单元测试 [英] django unit tests without a db

问题描述

是否有可能在不设置db的情况下编写django unittests？我想测试不需要db来设置的业务逻辑。虽然设置数据库的速度很快，但在某些情况下我真的不需要它。

解决方案

您可以将DjangoTestSuiteRunner并覆盖setup_databases和teardown_databases方法传递。

创建一个新的设置文件，并将TEST_RUNNER设置为刚创建的新类。然后，当您运行测试时，请使用--settings标志指定新的设置文件。

这是我所做的：

创建一个类似于这样的自定义测试套件：

 从django.test.simple import DjangoTestSuiteRunner 
 
 class NoDbTestRunner（DjangoTestSuiteRunner）：
没有数据库创建测试的测试运行器
 
 def setup_databases（self，** kwargs）：
覆盖父类中定义的数据库创建
 pass 
 
 def teardown_databases（self，old_config，** kwargs）：
覆盖数据库拆卸在父类中定义
 pass 
  

创建自定义设置：来自mysite.settings import的

$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $'$'''''''''''
TEST_RUNNER = mysite.scripts.testrunner.NoDbTestRunner'

当你运行测试时，像以下的--settings标志设置为您的新设置文件：

  python manage.py test myapp --settings ='no_db_settings' 
  

Is there a possibility to write django unittests without setting up a db? I want to test business logic which doesn't require the db to set up. And while it is fast to setup a db, I really don't need it in some situations.

解决方案

You can subclass DjangoTestSuiteRunner and override setup_databases and teardown_databases methods to pass.

Create a new settings file and set TEST_RUNNER to the new class you just created. Then when you're running your test, specify your new settings file with --settings flag.

Here is what I did:

Create a custom test suit runner similar to this:

from django.test.simple import DjangoTestSuiteRunner

class NoDbTestRunner(DjangoTestSuiteRunner):
  """ A test runner to test without database creation """

  def setup_databases(self, **kwargs):
    """ Override the database creation defined in parent class """
    pass

  def teardown_databases(self, old_config, **kwargs):
    """ Override the database teardown defined in parent class """
    pass

Create a custom settings:

from mysite.settings import *

# Test runner with no database creation
TEST_RUNNER = 'mysite.scripts.testrunner.NoDbTestRunner'

When you're running your tests, run it like the following with --settings flag set to your new settings file:

python manage.py test myapp --settings='no_db_settings'

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