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

This commit is contained in:
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:
* At the start of each test case, before ``setUp()`` is run, Django will
flush the database, returning the database to the state it was in
directly after :djadmin:`migrate` was called.
* At the start of each test, before ``setUp()`` is run, Django will flush the
database, returning the database to the state it was in directly after
:djadmin:`migrate` was called.
* Then, all the named fixtures are installed. In this example, Django will
install any JSON fixture named ``mammals``, followed by any fixture named
``birds``. See the :djadmin:`loaddata` documentation for more
details on defining and installing fixtures.
This flush/load procedure is repeated for each test in the test case, so you
can be certain that the outcome of a test will not be affected by another test,
or by the order of test execution.
For performance reasons, :class:`TestCase` loads fixtures once for the entire
test class, before :meth:`~TestCase.setUpTestData`, instead of before each
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
using multiple databases and set :attr:`multi_db=True