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# Copyright (C) 2015 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Test database schema migrations with Alembic"""
__all__ = [
'TestMigrations',
]
import unittest
import alembic.command
import sqlalchemy as sa
from mailman.config import config
from mailman.database.alembic import alembic_cfg
from mailman.database.helpers import exists_in_db
from mailman.database.model import Model
from mailman.testing.layers import ConfigLayer
class TestMigrations(unittest.TestCase):
layer = ConfigLayer
def setUp(self):
alembic.command.stamp(alembic_cfg, 'head')
def tearDown(self):
# Drop and restore a virgin database.
config.db.store.rollback()
md = sa.MetaData(bind=config.db.engine)
md.reflect()
# We have circular dependencies between user and address, thus we can't
# use drop_all() without getting a warning. Setting use_alter to True
# on the foreign keys helps SQLAlchemy mark those loops as known.
for tablename in ("user", "address"):
if tablename not in md.tables:
continue
for fk in md.tables[tablename].foreign_key_constraints:
fk.use_alter = True
md.drop_all()
Model.metadata.create_all(config.db.engine)
def test_all_migrations(self):
script_dir = alembic.script.ScriptDirectory.from_config(alembic_cfg)
revisions = [sc.revision for sc in
script_dir.walk_revisions('base', 'heads')]
for revision in revisions:
alembic.command.downgrade(alembic_cfg, revision)
revisions.reverse()
for revision in revisions:
alembic.command.upgrade(alembic_cfg, revision)
def test_42756496720_header_matches(self):
test_header_matches = [
('test-header-1', 'test-pattern-1'),
('test-header-2', 'test-pattern-2'),
('test-header-3', 'test-pattern-3'),
]
mlist_table = sa.sql.table('mailinglist',
sa.sql.column('id', sa.Integer),
sa.sql.column('header_matches', sa.PickleType)
)
header_match_table = sa.sql.table('headermatch',
sa.sql.column('mailing_list_id', sa.Integer),
sa.sql.column('header', sa.Unicode),
sa.sql.column('pattern', sa.Unicode),
)
# Downgrading
config.db.store.execute(mlist_table.insert().values(id=1))
config.db.store.execute(header_match_table.insert().values(
[{'mailing_list_id': 1, 'header': hm[0], 'pattern': hm[1]}
for hm in test_header_matches]))
config.db.store.commit()
alembic.command.downgrade(alembic_cfg, '2bb9b382198')
results = config.db.store.execute(
mlist_table.select()).fetchall()
self.assertEqual(results[0].header_matches, test_header_matches)
self.assertFalse(exists_in_db(config.db.engine, 'headermatch'))
config.db.store.commit()
# Upgrading
alembic.command.upgrade(alembic_cfg, '42756496720')
results = config.db.store.execute(
header_match_table.select()).fetchall()
self.assertEqual(results,
[(1, hm[0], hm[1]) for hm in test_header_matches])
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