#17762: Multi-db apps (no Django test suite) testing fails to create in-memory
sqlite DBs
-------------------------------------+-------------------------------------
Reporter: agriffis | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.3
(models, ORM) | Resolution:
Severity: Normal | Triage Stage: Accepted
Keywords: | Needs documentation: 0
Has patch: 1 | Patch needs improvement: 1
Needs tests: 1 | UI/UX: 0
Easy pickings: 0 |
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Comment (by ramiro):
Sorry, I can't reproduce this, my previous attempt failed because it
wasn't correctly set up.
This is how I tested:
1. Created a project.
2. Added an application by simply the
`tests/regressiontests/multiple_database` Django trunk regression test
(here I'm trusting it to assure us multi-DB functionality is effectively
working) to a `mdb` application directory and adding it to the
INSTALLED_APPS setting.
This means some 'multiple_database' -> 'mdb' replacements must be made
in the app files:
{{{
$ cd mdb
$ ack -l multiple_database --type-set json=.json --py --json |xargs sed -i
s/multiple_database/mdb/g
}}}
3. Edited the DATABASES setting to look like this:
{{{
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': 'data.db',
},
'other': {
'ENGINE': 'django.db.backends.sqlite3',
#'TEST_NAME': ':memory:',
}
}
}}}
4. Now I can run the tests for the 'mdb' app and they run without
failures:
{{{
/manage.py test -v2 mdb
Creating test database for alias 'default' (':memory:')...
[...]
Creating test database for alias 'other' (':memory:')...
[...many lines of tests output...]
----------------------------------------------------------------------
Ran 51 tests in 1.099s
OK
Destroying test database for alias 'default' (':memory:')...
Destroying test database for alias 'other' (':memory:')...
}}}
Note how with verbosity=2 the test runner reports the names of the test
DBs it is creating/destroying.
5. I tested this with: 1.3, 1.3.1, current 1.3.X branch tip and trunk,
always with the same results.
Could you give us more details how are you getting the ''"Django fails to
create multiple in-memory SQLite databases, instead it creates only one
(which is populated only with the table definitions for the default DB)"''
failure you describe so others can reproduce it?
--
Ticket URL: <https://code.djangoproject.com/ticket/17762#comment:3>
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