Testing Django¶

Python Testing
Factories
Testing endpoints
[[Running Tests]]
- [[faster-pycharm-tests]]

Django docs¶

Writing and running Django tests | Overview
manage.py test docs
- django-admin and manage.py | Django docs
Advanced testing topics | Django docs

Testing endpoints ¶

Writing a basic test¶

Override settings¶

from django.test import override_settings

class TestBuildPath(TestCase):
    @override_settings(CLIENT_ID=1130)
    def test_overriding_settings(self):
        self.assertEqual(settings.CLIENT_ID, 1130)

`patch` and mocking ¶

Auth¶

Login as a super user

@classmethod
    def setUpTestData(cls):
        cls.user = UserFactory(is_superuser=True)

self.client.force_login(self.user)

Factories ¶

Create mock data

Act¶

Call the function
make the API call

Assert¶

Expect raising an error¶

self.assertRaises(ExpectedException, fn_name, arg1, arg2)

it also returns a context manager!

from django.core.exceptions import ValidationError
with self.assertRaises(ValidationError):
    course.full_clean()

No need to tear down data!¶

We use django.test.TestCase

inherits from the TransactionTestCase
tests are always within a database transaction
- which is then rolled back when the test completes
Reference

Using another testing framework¶

override the TEST_RUNNER env var

Have code that will run before the tests¶

from django.test.runner import DiscoverRunner
from some.path import patch_feature_flags


class DefaultTestRunner(DiscoverRunner):
    def run_tests(self, test_labels, extra_tests=None, **kwargs):
        with patch_feature_flags({}):
            """ Don't get feature flag value from LaunchDarkly. """
            return super().run_tests(test_labels, extra_tests=None, **kwargs)

[[feature-toggles#How to test feature flags]]

Last update: 2023-04-24