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import unittest
from unittest import mock
from migrations.test_base import OperationTestBase
from django.db import NotSupportedError, connection
from django.db.migrations.state import ProjectState
from django.db.models import Index
from django.db.utils import ProgrammingError
from django.test import modify_settings, override_settings, skipUnlessDBFeature
from django.test.utils import CaptureQueriesContext
from . import PostgreSQLTestCase
try:
from django.contrib.postgres.indexes import BrinIndex, BTreeIndex
from django.contrib.postgres.operations import (
AddIndexConcurrently, BloomExtension, CreateCollation, CreateExtension,
RemoveCollation, RemoveIndexConcurrently,
)
except ImportError:
pass
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific tests.')
@modify_settings(INSTALLED_APPS={'append': 'migrations'})
class AddIndexConcurrentlyTests(OperationTestBase):
app_label = 'test_add_concurrently'
def test_requires_atomic_false(self):
project_state = self.set_up_test_model(self.app_label)
new_state = project_state.clone()
operation = AddIndexConcurrently(
'Pony',
Index(fields=['pink'], name='pony_pink_idx'),
)
msg = (
'The AddIndexConcurrently operation cannot be executed inside '
'a transaction (set atomic = False on the migration).'
)
with self.assertRaisesMessage(NotSupportedError, msg):
with connection.schema_editor(atomic=True) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
def test_add(self):
project_state = self.set_up_test_model(self.app_label, index=False)
table_name = '%s_pony' % self.app_label
index = Index(fields=['pink'], name='pony_pink_idx')
new_state = project_state.clone()
operation = AddIndexConcurrently('Pony', index)
self.assertEqual(
operation.describe(),
'Concurrently create index pony_pink_idx on field(s) pink of '
'model Pony'
)
operation.state_forwards(self.app_label, new_state)
self.assertEqual(len(new_state.models[self.app_label, 'pony'].options['indexes']), 1)
self.assertIndexNotExists(table_name, ['pink'])
# Add index.
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertIndexExists(table_name, ['pink'])
# Reversal.
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertIndexNotExists(table_name, ['pink'])
# Deconstruction.
name, args, kwargs = operation.deconstruct()
self.assertEqual(name, 'AddIndexConcurrently')
self.assertEqual(args, [])
self.assertEqual(kwargs, {'model_name': 'Pony', 'index': index})
def test_add_other_index_type(self):
project_state = self.set_up_test_model(self.app_label, index=False)
table_name = '%s_pony' % self.app_label
new_state = project_state.clone()
operation = AddIndexConcurrently(
'Pony',
BrinIndex(fields=['pink'], name='pony_pink_brin_idx'),
)
self.assertIndexNotExists(table_name, ['pink'])
# Add index.
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertIndexExists(table_name, ['pink'], index_type='brin')
# Reversal.
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertIndexNotExists(table_name, ['pink'])
def test_add_with_options(self):
project_state = self.set_up_test_model(self.app_label, index=False)
table_name = '%s_pony' % self.app_label
new_state = project_state.clone()
index = BTreeIndex(fields=['pink'], name='pony_pink_btree_idx', fillfactor=70)
operation = AddIndexConcurrently('Pony', index)
self.assertIndexNotExists(table_name, ['pink'])
# Add index.
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertIndexExists(table_name, ['pink'], index_type='btree')
# Reversal.
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertIndexNotExists(table_name, ['pink'])
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific tests.')
@modify_settings(INSTALLED_APPS={'append': 'migrations'})
class RemoveIndexConcurrentlyTests(OperationTestBase):
app_label = 'test_rm_concurrently'
def test_requires_atomic_false(self):
project_state = self.set_up_test_model(self.app_label, index=True)
new_state = project_state.clone()
operation = RemoveIndexConcurrently('Pony', 'pony_pink_idx')
msg = (
'The RemoveIndexConcurrently operation cannot be executed inside '
'a transaction (set atomic = False on the migration).'
)
with self.assertRaisesMessage(NotSupportedError, msg):
with connection.schema_editor(atomic=True) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
def test_remove(self):
project_state = self.set_up_test_model(self.app_label, index=True)
table_name = '%s_pony' % self.app_label
self.assertTableExists(table_name)
new_state = project_state.clone()
operation = RemoveIndexConcurrently('Pony', 'pony_pink_idx')
self.assertEqual(
operation.describe(),
'Concurrently remove index pony_pink_idx from Pony',
)
operation.state_forwards(self.app_label, new_state)
self.assertEqual(len(new_state.models[self.app_label, 'pony'].options['indexes']), 0)
self.assertIndexExists(table_name, ['pink'])
# Remove index.
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertIndexNotExists(table_name, ['pink'])
# Reversal.
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertIndexExists(table_name, ['pink'])
# Deconstruction.
name, args, kwargs = operation.deconstruct()
self.assertEqual(name, 'RemoveIndexConcurrently')
self.assertEqual(args, [])
self.assertEqual(kwargs, {'model_name': 'Pony', 'name': 'pony_pink_idx'})
class NoMigrationRouter():
def allow_migrate(self, db, app_label, **hints):
return False
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific tests.')
class CreateExtensionTests(PostgreSQLTestCase):
app_label = 'test_allow_create_extention'
@override_settings(DATABASE_ROUTERS=[NoMigrationRouter()])
def test_no_allow_migrate(self):
operation = CreateExtension('tablefunc')
project_state = ProjectState()
new_state = project_state.clone()
# Don't create an extension.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 0)
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 0)
def test_allow_migrate(self):
operation = CreateExtension('tablefunc')
self.assertEqual(operation.migration_name_fragment, 'create_extension_tablefunc')
project_state = ProjectState()
new_state = project_state.clone()
# Create an extension.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 4)
self.assertIn('CREATE EXTENSION IF NOT EXISTS', captured_queries[1]['sql'])
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 2)
self.assertIn('DROP EXTENSION IF EXISTS', captured_queries[1]['sql'])
def test_create_existing_extension(self):
operation = BloomExtension()
self.assertEqual(operation.migration_name_fragment, 'create_extension_bloom')
project_state = ProjectState()
new_state = project_state.clone()
# Don't create an existing extension.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 3)
self.assertIn('SELECT', captured_queries[0]['sql'])
def test_drop_nonexistent_extension(self):
operation = CreateExtension('tablefunc')
project_state = ProjectState()
new_state = project_state.clone()
# Don't drop a nonexistent extension.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('SELECT', captured_queries[0]['sql'])
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific tests.')
class CreateCollationTests(PostgreSQLTestCase):
app_label = 'test_allow_create_collation'
@override_settings(DATABASE_ROUTERS=[NoMigrationRouter()])
def test_no_allow_migrate(self):
operation = CreateCollation('C_test', locale='C')
project_state = ProjectState()
new_state = project_state.clone()
# Don't create a collation.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 0)
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 0)
def test_create(self):
operation = CreateCollation('C_test', locale='C')
self.assertEqual(operation.migration_name_fragment, 'create_collation_c_test')
self.assertEqual(operation.describe(), 'Create collation C_test')
project_state = ProjectState()
new_state = project_state.clone()
# Create a collation.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('CREATE COLLATION', captured_queries[0]['sql'])
# Creating the same collation raises an exception.
with self.assertRaisesMessage(ProgrammingError, 'already exists'):
with connection.schema_editor(atomic=True) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('DROP COLLATION', captured_queries[0]['sql'])
# Deconstruction.
name, args, kwargs = operation.deconstruct()
self.assertEqual(name, 'CreateCollation')
self.assertEqual(args, [])
self.assertEqual(kwargs, {'name': 'C_test', 'locale': 'C'})
@skipUnlessDBFeature('supports_non_deterministic_collations')
def test_create_non_deterministic_collation(self):
operation = CreateCollation(
'case_insensitive_test',
'und-u-ks-level2',
provider='icu',
deterministic=False,
)
project_state = ProjectState()
new_state = project_state.clone()
# Create a collation.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('CREATE COLLATION', captured_queries[0]['sql'])
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('DROP COLLATION', captured_queries[0]['sql'])
# Deconstruction.
name, args, kwargs = operation.deconstruct()
self.assertEqual(name, 'CreateCollation')
self.assertEqual(args, [])
self.assertEqual(kwargs, {
'name': 'case_insensitive_test',
'locale': 'und-u-ks-level2',
'provider': 'icu',
'deterministic': False,
})
@skipUnlessDBFeature('supports_alternate_collation_providers')
def test_create_collation_alternate_provider(self):
operation = CreateCollation(
'german_phonebook_test',
provider='icu',
locale='de-u-co-phonebk',
)
project_state = ProjectState()
new_state = project_state.clone()
# Create an collation.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('CREATE COLLATION', captured_queries[0]['sql'])
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('DROP COLLATION', captured_queries[0]['sql'])
def test_nondeterministic_collation_not_supported(self):
operation = CreateCollation(
'case_insensitive_test',
provider='icu',
locale='und-u-ks-level2',
deterministic=False,
)
project_state = ProjectState()
new_state = project_state.clone()
msg = 'Non-deterministic collations require PostgreSQL 12+.'
with connection.schema_editor(atomic=False) as editor:
with mock.patch(
'django.db.backends.postgresql.features.DatabaseFeatures.'
'supports_non_deterministic_collations',
False,
):
with self.assertRaisesMessage(NotSupportedError, msg):
operation.database_forwards(self.app_label, editor, project_state, new_state)
def test_collation_with_icu_provider_raises_error(self):
operation = CreateCollation(
'german_phonebook',
provider='icu',
locale='de-u-co-phonebk',
)
project_state = ProjectState()
new_state = project_state.clone()
msg = 'Non-libc providers require PostgreSQL 10+.'
with connection.schema_editor(atomic=False) as editor:
with mock.patch(
'django.db.backends.postgresql.features.DatabaseFeatures.'
'supports_alternate_collation_providers',
False,
):
with self.assertRaisesMessage(NotSupportedError, msg):
operation.database_forwards(self.app_label, editor, project_state, new_state)
@unittest.skipUnless(connection.vendor == 'postgresql', 'PostgreSQL specific tests.')
class RemoveCollationTests(PostgreSQLTestCase):
app_label = 'test_allow_remove_collation'
@override_settings(DATABASE_ROUTERS=[NoMigrationRouter()])
def test_no_allow_migrate(self):
operation = RemoveCollation('C_test', locale='C')
project_state = ProjectState()
new_state = project_state.clone()
# Don't create a collation.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 0)
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 0)
def test_remove(self):
operation = CreateCollation('C_test', locale='C')
project_state = ProjectState()
new_state = project_state.clone()
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
operation = RemoveCollation('C_test', locale='C')
self.assertEqual(operation.migration_name_fragment, 'remove_collation_c_test')
self.assertEqual(operation.describe(), 'Remove collation C_test')
project_state = ProjectState()
new_state = project_state.clone()
# Remove a collation.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('DROP COLLATION', captured_queries[0]['sql'])
# Removing a nonexistent collation raises an exception.
with self.assertRaisesMessage(ProgrammingError, 'does not exist'):
with connection.schema_editor(atomic=True) as editor:
operation.database_forwards(self.app_label, editor, project_state, new_state)
# Reversal.
with CaptureQueriesContext(connection) as captured_queries:
with connection.schema_editor(atomic=False) as editor:
operation.database_backwards(self.app_label, editor, new_state, project_state)
self.assertEqual(len(captured_queries), 1)
self.assertIn('CREATE COLLATION', captured_queries[0]['sql'])
# Deconstruction.
name, args, kwargs = operation.deconstruct()
self.assertEqual(name, 'RemoveCollation')
self.assertEqual(args, [])
self.assertEqual(kwargs, {'name': 'C_test', 'locale': 'C'})
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