There is a SimpleTestCase.settings method added in commit 0dc6420ⁱ,
which, according to the docstring, returns “A context manager that
temporarily sets a setting and reverts back to the original value when
exiting the context.”. In commit a3a53e0² its implementation has been
simplified so that now it is only an identity wrapper around
override_settings class (which was added in the same commit). The
documentation states that SimpleTestCase.settings should be used as a
context manager and override_settings should be used as a decorator³,
but, given that implementation, override_settings can be used for both
tasks. Making a distinction generates only unnecessary noise, so I
propose to deprecate and remove SimpleTestCase.settings method and
document the fact that override_settings can act also as a context manager.
There is also a SimpleTestCase.urls class attribute which allows user to
specify overriden ROOT_URLCONF setting. It was added in commit 415bd69⁴,
long before SimpleTestCase.settings and override_settings were
available. Currently the same effect can be achieved with
override_settings decorator, so SimpleTestCase.urls can be considered
redundant, and also marked for deprecation.
Krzysztof
ⁱ https://github.com/django/django/commit/0dc6420
² https://github.com/django/django/commit/a3a53e0
³
https://docs.djangoproject.com/en/dev/topics/testing/overview/#overriding-settings
⁴ https://github.com/django/django/commit/415bd69
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