78 lines
3.7 KiB
Python
78 lines
3.7 KiB
Python
from django.test import TransactionTestCase
|
|
from django.test.utils import override_settings
|
|
from django.db import connection
|
|
from django.db.migrations.executor import MigrationExecutor
|
|
|
|
|
|
class ExecutorTests(TransactionTestCase):
|
|
"""
|
|
Tests the migration executor (full end-to-end running).
|
|
|
|
Bear in mind that if these are failing you should fix the other
|
|
test failures first, as they may be propagating into here.
|
|
"""
|
|
|
|
available_apps = ["migrations", "django.contrib.sessions"]
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
|
|
def test_run(self):
|
|
"""
|
|
Tests running a simple set of migrations.
|
|
"""
|
|
executor = MigrationExecutor(connection)
|
|
executor.recorder.flush()
|
|
# Let's look at the plan first and make sure it's up to scratch
|
|
plan = executor.migration_plan([("migrations", "0002_second")])
|
|
self.assertEqual(
|
|
plan,
|
|
[
|
|
(executor.loader.graph.nodes["migrations", "0001_initial"], False),
|
|
(executor.loader.graph.nodes["migrations", "0002_second"], False),
|
|
],
|
|
)
|
|
# Were the tables there before?
|
|
self.assertNotIn("migrations_author", connection.introspection.get_table_list(connection.cursor()))
|
|
self.assertNotIn("migrations_book", connection.introspection.get_table_list(connection.cursor()))
|
|
# Alright, let's try running it
|
|
executor.migrate([("migrations", "0002_second")])
|
|
# Are the tables there now?
|
|
self.assertIn("migrations_author", connection.introspection.get_table_list(connection.cursor()))
|
|
self.assertIn("migrations_book", connection.introspection.get_table_list(connection.cursor()))
|
|
# Alright, let's undo what we did
|
|
executor.migrate([("migrations", None)])
|
|
# Are the tables gone?
|
|
self.assertNotIn("migrations_author", connection.introspection.get_table_list(connection.cursor()))
|
|
self.assertNotIn("migrations_book", connection.introspection.get_table_list(connection.cursor()))
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations", "sessions": "migrations.test_migrations_2"})
|
|
def test_empty_plan(self):
|
|
"""
|
|
Tests that re-planning a full migration of a fully-migrated set doesn't
|
|
perform spurious unmigrations and remigrations.
|
|
|
|
There was previously a bug where the executor just always performed the
|
|
backwards plan for applied migrations - which even for the most recent
|
|
migration in an app, might include other, dependent apps, and these
|
|
were being unmigrated.
|
|
"""
|
|
# Make the initial plan, check it
|
|
# We use 'sessions' here as the second app as it's always present
|
|
# in INSTALLED_APPS, so we can happily assign it test migrations.
|
|
executor = MigrationExecutor(connection)
|
|
plan = executor.migration_plan([("migrations", "0002_second"), ("sessions", "0001_initial")])
|
|
self.assertEqual(
|
|
plan,
|
|
[
|
|
(executor.loader.graph.nodes["migrations", "0001_initial"], False),
|
|
(executor.loader.graph.nodes["migrations", "0002_second"], False),
|
|
(executor.loader.graph.nodes["sessions", "0001_initial"], False),
|
|
],
|
|
)
|
|
# Fake-apply all migrations
|
|
executor.migrate([("migrations", "0002_second"), ("sessions", "0001_initial")], fake=True)
|
|
# Now plan a second time and make sure it's empty
|
|
plan = executor.migration_plan([("migrations", "0002_second"), ("sessions", "0001_initial")])
|
|
self.assertEqual(plan, [])
|
|
# Erase all the fake records
|
|
executor.recorder.flush()
|