How to run Django s test database only in memory

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Since I know the test database will always be quite small, why can't I just configure the system to always keep the entire test database in RAM? Never touch the disk at all. How do I configure this in Django? I'd prefer to keep using MySQL since that's what I use in production, but if SQLite 3 or something else makes this easy.
Jun 24, 2020 in Python by kartik
• 37,520 points
4,336 views

1 answer to this question.

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Hello @kartik,

If you set your database engine to sqlite3 when you run your tests, Django will use a in-memory database.

I'm using code like this in my settings.py to set the engine to sqlite when running my tests:

if 'test' in sys.argv:
    DATABASE_ENGINE = 'sqlite3'

Or in Django 1.2:

if 'test' in sys.argv:
    DATABASES['default'] = {'ENGINE': 'sqlite3'}

And finally in Django 1.3 and 1.4:

if 'test' in sys.argv:
    DATABASES['default'] = {'ENGINE': 'django.db.backends.sqlite3'}

Hope this is helpfull!

Thank You!!

answered Jun 24, 2020 by Niroj
• 82,840 points

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