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Fixed #26111 -- Clarified that fixtures are loaded once per TestCase.

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Johannes Linke 2016-02-11 21:32:24 +01:00 committed by Tim Graham
parent cf48962b36
commit 02430ef19d
1 changed files with 8 additions and 6 deletions
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14
docs/topics/testing/tools.txt
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@ -1071,18 +1071,20 @@ subclass::
Here's specifically what will happen: Here's specifically what will happen:
* At the start of each test case, before ``setUp()`` is run, Django will * At the start of each test, before ``setUp()`` is run, Django will flush the
flush the database, returning the database to the state it was in database, returning the database to the state it was in directly after
directly after :djadmin:`migrate` was called. :djadmin:`migrate` was called.
* Then, all the named fixtures are installed. In this example, Django will * Then, all the named fixtures are installed. In this example, Django will
install any JSON fixture named ``mammals``, followed by any fixture named install any JSON fixture named ``mammals``, followed by any fixture named
``birds``. See the :djadmin:`loaddata` documentation for more ``birds``. See the :djadmin:`loaddata` documentation for more
details on defining and installing fixtures. details on defining and installing fixtures.
This flush/load procedure is repeated for each test in the test case, so you For performance reasons, :class:`TestCase` loads fixtures once for the entire
can be certain that the outcome of a test will not be affected by another test, test class, before :meth:`~TestCase.setUpTestData`, instead of before each
or by the order of test execution. test, and it uses transactions to clean the database before each test. In any case,
you can be certain that the outcome of a test will not be affected by another
test or by the order of test execution.
By default, fixtures are only loaded into the ``default`` database. If you are By default, fixtures are only loaded into the ``default`` database. If you are
using multiple databases and set :attr:`multi_db=True using multiple databases and set :attr:`multi_db=True