Django-admin command to display migrations with dependencies.

django migrations python

Test django schema and data migrations, including migrations' order and best practices.

Features

• Allows to test django schema and data migrations
• Allows to test both forward and rollback migrations
• Allows to test the migrations order
• Allows to test migration names
• Allows to test database configuration
• Fully typed with annotations and checked with mypy, PEP561 compatible
• Easy to start: has lots of docs, tests, and tutorials

So, here's an example:

from django_test_migrations.migrator import Migrator

migrator = Migrator(database='default')

# Initial migration, currently our model has only a single string field:
# Note:
# We are testing migration `0002_someitem_is_clean`, so we are specifying
# the name of the previous migration (`0001_initial`) in the
# .apply_initial_migration() method in order to prepare a state of the database
# before applying the migration we are going to test.
#
old_state = migrator.apply_initial_migration(('main_app', '0001_initial'))
SomeItem = old_state.apps.get_model('main_app', 'SomeItem')

# Let's create a model with just a single field specified:
SomeItem.objects.create(string_field='a')
assert len(SomeItem._meta.get_fields()) == 2  # id + string_field

# Now this migration will add `is_clean` field to the model:
new_state = migrator.apply_tested_migration(
    ('main_app', '0002_someitem_is_clean'),
)
SomeItem = new_state.apps.get_model('main_app', 'SomeItem')

# We can now test how our migration worked, new field is there:
assert SomeItem.objects.filter(is_clean=True).count() == 0
assert len(SomeItem._meta.get_fields()) == 3  # id + string_field + is_clean

# Cleanup:
migrator.reset()

django django-migrations django-orm django-test django-testing pytest pytest-plugin python python3

Liquidb is a Django app that simplifies migration management.

$ git clone [email protected]:Gusakovskiy/django-liquidb.git
$ cd django-liquidb
$ python setup.py install