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Harm Geerts 06e5f7ae16 Fixed #29052 -- Made test database creation preserve alias order and prefer the "default" database.
This fixes flushing test databases when two aliases point to the same
database.

Use a list() to store the test database aliases so the order remains
stable by following the order of the connections. Also, always use the
"default" database alias as the first alias to accommodate `migrate`.

Previously `migrate` could be executed on a secondary alias which
caused truncating the "default" database.
2021-02-16 10:25:34 +01:00
..

To run the test suite, first, create and activate a virtual environment. Then
install some requirements and run the tests::

    $ cd tests
    $ python -m pip install -e ..
    $ python -m pip install -r requirements/py3.txt
    $ ./runtests.py

For more information about the test suite, see
https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/unit-tests/.