Is there a possibility to write django unittests without setting up a db? I want to test business logic which doesn't require the db to set up. And while it is fast to setup a db, I really don't need it in some situations.
You can subclass DjangoTestSuiteRunner and override setup_databases and teardown_databases methods to pass.
Create a new settings file and set TEST_RUNNER to the new class you just created. Then when you're running your test, specify your new settings file with --settings flag.
Here is what I did:
Create a custom test suit runner similar to this:
from django.test.simple import DjangoTestSuiteRunner
class NoDbTestRunner(DjangoTestSuiteRunner):
""" A test runner to test without database creation """
def setup_databases(self, **kwargs):
""" Override the database creation defined in parent class """
pass
def teardown_databases(self, old_config, **kwargs):
""" Override the database teardown defined in parent class """
pass
Create a custom settings:
from mysite.settings import *
# Test runner with no database creation
TEST_RUNNER = 'mysite.scripts.testrunner.NoDbTestRunner'
When you're running your tests, run it like the following with --settings flag set to your new settings file:
python manage.py test myapp --settings='no_db_settings'
UPDATE: April/2018
Since Django 1.8, the module django.test.simple.DjangoTestSuiteRunner
were moved to 'django.test.runner.DiscoverRunner'
.
For more info check official doc section about custom test runners.