486 lines
19 KiB
Python
486 lines
19 KiB
Python
from __future__ import unicode_literals
|
|
|
|
from unittest import skipIf
|
|
|
|
from django.db import connection, connections
|
|
from django.db.migrations.exceptions import (
|
|
AmbiguityError, InconsistentMigrationHistory, NodeNotFoundError,
|
|
)
|
|
from django.db.migrations.loader import MigrationLoader
|
|
from django.db.migrations.recorder import MigrationRecorder
|
|
from django.test import TestCase, modify_settings, override_settings
|
|
from django.utils import six
|
|
|
|
|
|
class RecorderTests(TestCase):
|
|
"""
|
|
Tests recording migrations as applied or not.
|
|
"""
|
|
|
|
def test_apply(self):
|
|
"""
|
|
Tests marking migrations as applied/unapplied.
|
|
"""
|
|
recorder = MigrationRecorder(connection)
|
|
self.assertEqual(
|
|
set((x, y) for (x, y) in recorder.applied_migrations() if x == "myapp"),
|
|
set(),
|
|
)
|
|
recorder.record_applied("myapp", "0432_ponies")
|
|
self.assertEqual(
|
|
set((x, y) for (x, y) in recorder.applied_migrations() if x == "myapp"),
|
|
{("myapp", "0432_ponies")},
|
|
)
|
|
# That should not affect records of another database
|
|
recorder_other = MigrationRecorder(connections['other'])
|
|
self.assertEqual(
|
|
set((x, y) for (x, y) in recorder_other.applied_migrations() if x == "myapp"),
|
|
set(),
|
|
)
|
|
recorder.record_unapplied("myapp", "0432_ponies")
|
|
self.assertEqual(
|
|
set((x, y) for (x, y) in recorder.applied_migrations() if x == "myapp"),
|
|
set(),
|
|
)
|
|
|
|
|
|
class LoaderTests(TestCase):
|
|
"""
|
|
Tests the disk and database loader, and running through migrations
|
|
in memory.
|
|
"""
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
|
|
@modify_settings(INSTALLED_APPS={'append': 'basic'})
|
|
def test_load(self):
|
|
"""
|
|
Makes sure the loader can load the migrations for the test apps,
|
|
and then render them out to a new Apps.
|
|
"""
|
|
# Load and test the plan
|
|
migration_loader = MigrationLoader(connection)
|
|
self.assertEqual(
|
|
migration_loader.graph.forwards_plan(("migrations", "0002_second")),
|
|
[
|
|
("migrations", "0001_initial"),
|
|
("migrations", "0002_second"),
|
|
],
|
|
)
|
|
# Now render it out!
|
|
project_state = migration_loader.project_state(("migrations", "0002_second"))
|
|
self.assertEqual(len(project_state.models), 2)
|
|
|
|
author_state = project_state.models["migrations", "author"]
|
|
self.assertEqual(
|
|
[x for x, y in author_state.fields],
|
|
["id", "name", "slug", "age", "rating"]
|
|
)
|
|
|
|
book_state = project_state.models["migrations", "book"]
|
|
self.assertEqual(
|
|
[x for x, y in book_state.fields],
|
|
["id", "author"]
|
|
)
|
|
|
|
# Ensure we've included unmigrated apps in there too
|
|
self.assertIn("basic", project_state.real_apps)
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_unmigdep"})
|
|
def test_load_unmigrated_dependency(self):
|
|
"""
|
|
Makes sure the loader can load migrations with a dependency on an unmigrated app.
|
|
"""
|
|
# Load and test the plan
|
|
migration_loader = MigrationLoader(connection)
|
|
self.assertEqual(
|
|
migration_loader.graph.forwards_plan(("migrations", "0001_initial")),
|
|
[
|
|
('contenttypes', '0001_initial'),
|
|
('auth', '0001_initial'),
|
|
("migrations", "0001_initial"),
|
|
],
|
|
)
|
|
# Now render it out!
|
|
project_state = migration_loader.project_state(("migrations", "0001_initial"))
|
|
self.assertEqual(len([m for a, m in project_state.models if a == "migrations"]), 1)
|
|
|
|
book_state = project_state.models["migrations", "book"]
|
|
self.assertEqual(
|
|
[x for x, y in book_state.fields],
|
|
["id", "user"]
|
|
)
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_run_before"})
|
|
def test_run_before(self):
|
|
"""
|
|
Makes sure the loader uses Migration.run_before.
|
|
"""
|
|
# Load and test the plan
|
|
migration_loader = MigrationLoader(connection)
|
|
self.assertEqual(
|
|
migration_loader.graph.forwards_plan(("migrations", "0002_second")),
|
|
[
|
|
("migrations", "0001_initial"),
|
|
("migrations", "0003_third"),
|
|
("migrations", "0002_second"),
|
|
],
|
|
)
|
|
|
|
@override_settings(MIGRATION_MODULES={
|
|
"migrations": "migrations.test_migrations_first",
|
|
"migrations2": "migrations2.test_migrations_2_first",
|
|
})
|
|
@modify_settings(INSTALLED_APPS={'append': 'migrations2'})
|
|
def test_first(self):
|
|
"""
|
|
Makes sure the '__first__' migrations build correctly.
|
|
"""
|
|
migration_loader = MigrationLoader(connection)
|
|
self.assertEqual(
|
|
migration_loader.graph.forwards_plan(("migrations", "second")),
|
|
[
|
|
("migrations", "thefirst"),
|
|
("migrations2", "0001_initial"),
|
|
("migrations2", "0002_second"),
|
|
("migrations", "second"),
|
|
],
|
|
)
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations"})
|
|
def test_name_match(self):
|
|
"Tests prefix name matching"
|
|
migration_loader = MigrationLoader(connection)
|
|
self.assertEqual(
|
|
migration_loader.get_migration_by_prefix("migrations", "0001").name,
|
|
"0001_initial",
|
|
)
|
|
with self.assertRaises(AmbiguityError):
|
|
migration_loader.get_migration_by_prefix("migrations", "0")
|
|
with self.assertRaises(KeyError):
|
|
migration_loader.get_migration_by_prefix("migrations", "blarg")
|
|
|
|
def test_load_import_error(self):
|
|
with override_settings(MIGRATION_MODULES={"migrations": "import_error_package"}):
|
|
with self.assertRaises(ImportError):
|
|
MigrationLoader(connection)
|
|
|
|
def test_load_module_file(self):
|
|
with override_settings(MIGRATION_MODULES={"migrations": "migrations.faulty_migrations.file"}):
|
|
loader = MigrationLoader(connection)
|
|
self.assertIn(
|
|
"migrations", loader.unmigrated_apps,
|
|
"App with migrations module file not in unmigrated apps."
|
|
)
|
|
|
|
@skipIf(six.PY2, "PY2 doesn't load empty dirs.")
|
|
def test_load_empty_dir(self):
|
|
with override_settings(MIGRATION_MODULES={"migrations": "migrations.faulty_migrations.namespace"}):
|
|
loader = MigrationLoader(connection)
|
|
self.assertIn(
|
|
"migrations", loader.unmigrated_apps,
|
|
"App missing __init__.py in migrations module not in unmigrated apps."
|
|
)
|
|
|
|
@override_settings(
|
|
INSTALLED_APPS=['migrations.migrations_test_apps.migrated_app'],
|
|
)
|
|
def test_marked_as_migrated(self):
|
|
"""
|
|
Undefined MIGRATION_MODULES implies default migration module.
|
|
"""
|
|
migration_loader = MigrationLoader(connection)
|
|
self.assertEqual(migration_loader.migrated_apps, {'migrated_app'})
|
|
self.assertEqual(migration_loader.unmigrated_apps, set())
|
|
|
|
@override_settings(
|
|
INSTALLED_APPS=['migrations.migrations_test_apps.migrated_app'],
|
|
MIGRATION_MODULES={"migrated_app": None},
|
|
)
|
|
def test_marked_as_unmigrated(self):
|
|
"""
|
|
MIGRATION_MODULES allows disabling of migrations for a particular app.
|
|
"""
|
|
migration_loader = MigrationLoader(connection)
|
|
self.assertEqual(migration_loader.migrated_apps, set())
|
|
self.assertEqual(migration_loader.unmigrated_apps, {'migrated_app'})
|
|
|
|
@override_settings(
|
|
INSTALLED_APPS=['migrations.migrations_test_apps.migrated_app'],
|
|
MIGRATION_MODULES={'migrated_app': 'missing-module'},
|
|
)
|
|
def test_explicit_missing_module(self):
|
|
"""
|
|
If a MIGRATION_MODULES override points to a missing module, the error
|
|
raised during the importation attempt should be propagated unless
|
|
`ignore_no_migrations=True`.
|
|
"""
|
|
with self.assertRaisesMessage(ImportError, 'missing-module'):
|
|
migration_loader = MigrationLoader(connection)
|
|
migration_loader = MigrationLoader(connection, ignore_no_migrations=True)
|
|
self.assertEqual(migration_loader.migrated_apps, set())
|
|
self.assertEqual(migration_loader.unmigrated_apps, {'migrated_app'})
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed"})
|
|
def test_loading_squashed(self):
|
|
"Tests loading a squashed migration"
|
|
migration_loader = MigrationLoader(connection)
|
|
recorder = MigrationRecorder(connection)
|
|
self.addCleanup(recorder.flush)
|
|
# Loading with nothing applied should just give us the one node
|
|
self.assertEqual(
|
|
len([x for x in migration_loader.graph.nodes if x[0] == "migrations"]),
|
|
1,
|
|
)
|
|
# However, fake-apply one migration and it should now use the old two
|
|
recorder.record_applied("migrations", "0001_initial")
|
|
migration_loader.build_graph()
|
|
self.assertEqual(
|
|
len([x for x in migration_loader.graph.nodes if x[0] == "migrations"]),
|
|
2,
|
|
)
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed_complex"})
|
|
def test_loading_squashed_complex(self):
|
|
"Tests loading a complex set of squashed migrations"
|
|
|
|
loader = MigrationLoader(connection)
|
|
recorder = MigrationRecorder(connection)
|
|
self.addCleanup(recorder.flush)
|
|
|
|
def num_nodes():
|
|
plan = set(loader.graph.forwards_plan(('migrations', '7_auto')))
|
|
return len(plan - loader.applied_migrations)
|
|
|
|
# Empty database: use squashed migration
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 5)
|
|
|
|
# Starting at 1 or 2 should use the squashed migration too
|
|
recorder.record_applied("migrations", "1_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 4)
|
|
|
|
recorder.record_applied("migrations", "2_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 3)
|
|
|
|
# However, starting at 3 to 5 cannot use the squashed migration
|
|
recorder.record_applied("migrations", "3_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 4)
|
|
|
|
recorder.record_applied("migrations", "4_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 3)
|
|
|
|
# Starting at 5 to 7 we are passed the squashed migrations
|
|
recorder.record_applied("migrations", "5_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 2)
|
|
|
|
recorder.record_applied("migrations", "6_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 1)
|
|
|
|
recorder.record_applied("migrations", "7_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 0)
|
|
|
|
@override_settings(MIGRATION_MODULES={
|
|
"app1": "migrations.test_migrations_squashed_complex_multi_apps.app1",
|
|
"app2": "migrations.test_migrations_squashed_complex_multi_apps.app2",
|
|
})
|
|
@modify_settings(INSTALLED_APPS={'append': [
|
|
"migrations.test_migrations_squashed_complex_multi_apps.app1",
|
|
"migrations.test_migrations_squashed_complex_multi_apps.app2",
|
|
]})
|
|
def test_loading_squashed_complex_multi_apps(self):
|
|
loader = MigrationLoader(connection)
|
|
loader.build_graph()
|
|
|
|
plan = set(loader.graph.forwards_plan(('app1', '4_auto')))
|
|
expected_plan = {
|
|
('app1', '1_auto'),
|
|
('app2', '1_squashed_2'),
|
|
('app1', '2_squashed_3'),
|
|
('app1', '4_auto'),
|
|
}
|
|
self.assertEqual(plan, expected_plan)
|
|
|
|
@override_settings(MIGRATION_MODULES={
|
|
"app1": "migrations.test_migrations_squashed_complex_multi_apps.app1",
|
|
"app2": "migrations.test_migrations_squashed_complex_multi_apps.app2",
|
|
})
|
|
@modify_settings(INSTALLED_APPS={'append': [
|
|
"migrations.test_migrations_squashed_complex_multi_apps.app1",
|
|
"migrations.test_migrations_squashed_complex_multi_apps.app2",
|
|
]})
|
|
def test_loading_squashed_complex_multi_apps_partially_applied(self):
|
|
loader = MigrationLoader(connection)
|
|
recorder = MigrationRecorder(connection)
|
|
recorder.record_applied('app1', '1_auto')
|
|
recorder.record_applied('app1', '2_auto')
|
|
loader.build_graph()
|
|
|
|
plan = set(loader.graph.forwards_plan(('app1', '4_auto')))
|
|
plan = plan - loader.applied_migrations
|
|
expected_plan = {
|
|
('app2', '1_squashed_2'),
|
|
('app1', '3_auto'),
|
|
('app1', '4_auto'),
|
|
}
|
|
|
|
self.assertEqual(plan, expected_plan)
|
|
|
|
@override_settings(MIGRATION_MODULES={"migrations": "migrations.test_migrations_squashed_erroneous"})
|
|
def test_loading_squashed_erroneous(self):
|
|
"Tests loading a complex but erroneous set of squashed migrations"
|
|
|
|
loader = MigrationLoader(connection)
|
|
recorder = MigrationRecorder(connection)
|
|
self.addCleanup(recorder.flush)
|
|
|
|
def num_nodes():
|
|
plan = set(loader.graph.forwards_plan(('migrations', '7_auto')))
|
|
return len(plan - loader.applied_migrations)
|
|
|
|
# Empty database: use squashed migration
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 5)
|
|
|
|
# Starting at 1 or 2 should use the squashed migration too
|
|
recorder.record_applied("migrations", "1_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 4)
|
|
|
|
recorder.record_applied("migrations", "2_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 3)
|
|
|
|
# However, starting at 3 or 4 we'd need to use non-existing migrations
|
|
msg = ("Migration migrations.6_auto depends on nonexistent node ('migrations', '5_auto'). "
|
|
"Django tried to replace migration migrations.5_auto with any of "
|
|
"[migrations.3_squashed_5] but wasn't able to because some of the replaced "
|
|
"migrations are already applied.")
|
|
|
|
recorder.record_applied("migrations", "3_auto")
|
|
with self.assertRaisesMessage(NodeNotFoundError, msg):
|
|
loader.build_graph()
|
|
|
|
recorder.record_applied("migrations", "4_auto")
|
|
with self.assertRaisesMessage(NodeNotFoundError, msg):
|
|
loader.build_graph()
|
|
|
|
# Starting at 5 to 7 we are passed the squashed migrations
|
|
recorder.record_applied("migrations", "5_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 2)
|
|
|
|
recorder.record_applied("migrations", "6_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 1)
|
|
|
|
recorder.record_applied("migrations", "7_auto")
|
|
loader.build_graph()
|
|
self.assertEqual(num_nodes(), 0)
|
|
|
|
@override_settings(
|
|
MIGRATION_MODULES={'migrations': 'migrations.test_migrations'},
|
|
INSTALLED_APPS=['migrations'],
|
|
)
|
|
def test_check_consistent_history(self):
|
|
loader = MigrationLoader(connection=None)
|
|
loader.check_consistent_history(connection)
|
|
recorder = MigrationRecorder(connection)
|
|
recorder.record_applied('migrations', '0002_second')
|
|
msg = (
|
|
"Migration migrations.0002_second is applied before its dependency "
|
|
"migrations.0001_initial on database 'default'."
|
|
)
|
|
with self.assertRaisesMessage(InconsistentMigrationHistory, msg):
|
|
loader.check_consistent_history(connection)
|
|
|
|
@override_settings(
|
|
MIGRATION_MODULES={'migrations': 'migrations.test_migrations_squashed_extra'},
|
|
INSTALLED_APPS=['migrations'],
|
|
)
|
|
def test_check_consistent_history_squashed(self):
|
|
"""
|
|
MigrationLoader.check_consistent_history() should ignore unapplied
|
|
squashed migrations that have all of their `replaces` applied.
|
|
"""
|
|
loader = MigrationLoader(connection=None)
|
|
recorder = MigrationRecorder(connection)
|
|
recorder.record_applied('migrations', '0001_initial')
|
|
recorder.record_applied('migrations', '0002_second')
|
|
loader.check_consistent_history(connection)
|
|
recorder.record_applied('migrations', '0003_third')
|
|
loader.check_consistent_history(connection)
|
|
|
|
@override_settings(MIGRATION_MODULES={
|
|
"app1": "migrations.test_migrations_squashed_ref_squashed.app1",
|
|
"app2": "migrations.test_migrations_squashed_ref_squashed.app2",
|
|
})
|
|
@modify_settings(INSTALLED_APPS={'append': [
|
|
"migrations.test_migrations_squashed_ref_squashed.app1",
|
|
"migrations.test_migrations_squashed_ref_squashed.app2",
|
|
]})
|
|
def test_loading_squashed_ref_squashed(self):
|
|
"Tests loading a squashed migration with a new migration referencing it"
|
|
"""
|
|
The sample migrations are structred like this:
|
|
|
|
app_1 1 --> 2 ---------------------*--> 3 *--> 4
|
|
\ / /
|
|
*-------------------*----/--> 2_sq_3 --*
|
|
\ / /
|
|
=============== \ ============= / == / ======================
|
|
app_2 *--> 1_sq_2 --* /
|
|
\ /
|
|
*--> 1 --> 2 --*
|
|
|
|
Where 2_sq_3 is a replacing migration for 2 and 3 in app_1,
|
|
as 1_sq_2 is a replacing migration for 1 and 2 in app_2.
|
|
"""
|
|
|
|
loader = MigrationLoader(connection)
|
|
recorder = MigrationRecorder(connection)
|
|
self.addCleanup(recorder.flush)
|
|
|
|
# Load with nothing applied: both migrations squashed.
|
|
loader.build_graph()
|
|
plan = set(loader.graph.forwards_plan(('app1', '4_auto')))
|
|
plan = plan - loader.applied_migrations
|
|
expected_plan = {
|
|
('app1', '1_auto'),
|
|
('app2', '1_squashed_2'),
|
|
('app1', '2_squashed_3'),
|
|
('app1', '4_auto'),
|
|
}
|
|
self.assertEqual(plan, expected_plan)
|
|
|
|
# Fake-apply a few from app1: unsquashes migration in app1.
|
|
recorder.record_applied('app1', '1_auto')
|
|
recorder.record_applied('app1', '2_auto')
|
|
loader.build_graph()
|
|
plan = set(loader.graph.forwards_plan(('app1', '4_auto')))
|
|
plan = plan - loader.applied_migrations
|
|
expected_plan = {
|
|
('app2', '1_squashed_2'),
|
|
('app1', '3_auto'),
|
|
('app1', '4_auto'),
|
|
}
|
|
self.assertEqual(plan, expected_plan)
|
|
|
|
# Fake-apply one from app2: unsquashes migration in app2 too.
|
|
recorder.record_applied('app2', '1_auto')
|
|
loader.build_graph()
|
|
plan = set(loader.graph.forwards_plan(('app1', '4_auto')))
|
|
plan = plan - loader.applied_migrations
|
|
expected_plan = {
|
|
('app2', '2_auto'),
|
|
('app1', '3_auto'),
|
|
('app1', '4_auto'),
|
|
}
|
|
self.assertEqual(plan, expected_plan)
|