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How to use clear_migrations_done method in autotest

Best Python code snippet using autotest_python

migrate_unittest.py

...20    @classmethod21    def get_migrations_done(cls):22        return cls.migrations_done23    @classmethod24    def clear_migrations_done(cls):25        cls.migrations_done = []26    @classmethod27    def do_migration(cls, version, direction):28        cls.migrations_done.append((version, direction))29    def migrate_up(self, manager):30        self.do_migration(self.version, 'up')31        if self.version == 1:32            manager.create_migrate_table()33    def migrate_down(self, manager):34        self.do_migration(self.version, 'down')35MIGRATIONS = [DummyMigration(n) for n in xrange(1, NUM_MIGRATIONS + 1)]36class TestableMigrationManager(migrate.MigrationManager):37    def _set_migrations_dir(self, migrations_dir=None):38        pass39    def get_migrations(self, minimum_version=None, maximum_version=None):40        minimum_version = minimum_version or 141        maximum_version = maximum_version or len(MIGRATIONS)42        return MIGRATIONS[minimum_version-1:maximum_version]43class MigrateManagerTest(unittest.TestCase):44    def setUp(self):45        self._database = (46            database_connection.DatabaseConnection.get_test_database())47        self._database.connect()48        self.manager = TestableMigrationManager(self._database)49        DummyMigration.clear_migrations_done()50    def tearDown(self):51        self._database.disconnect()52    def test_sync(self):53        self.manager.do_sync_db()54        self.assertEquals(self.manager.get_db_version(), NUM_MIGRATIONS)55        self.assertEquals(DummyMigration.get_migrations_done(),56                          [(1, 'up'), (2, 'up'), (3, 'up')])57        DummyMigration.clear_migrations_done()58        self.manager.do_sync_db(0)59        self.assertEquals(self.manager.get_db_version(), 0)60        self.assertEquals(DummyMigration.get_migrations_done(),61                          [(3, 'down'), (2, 'down'), (1, 'down')])62    def test_sync_one_by_one(self):63        for version in xrange(1, NUM_MIGRATIONS + 1):64            self.manager.do_sync_db(version)65            self.assertEquals(self.manager.get_db_version(),66                              version)67            self.assertEquals(68                DummyMigration.get_migrations_done()[-1],69                (version, 'up'))70        for version in xrange(NUM_MIGRATIONS - 1, -1, -1):71            self.manager.do_sync_db(version)72            self.assertEquals(self.manager.get_db_version(),73                              version)74            self.assertEquals(75                DummyMigration.get_migrations_done()[-1],76                (version + 1, 'down'))77    def test_null_sync(self):78        self.manager.do_sync_db()79        DummyMigration.clear_migrations_done()80        self.manager.do_sync_db()81        self.assertEquals(DummyMigration.get_migrations_done(), [])82class DummyMigrationManager(object):83    def __init__(self):84        self.calls = []85    def execute_script(self, script):86        self.calls.append(script)87class MigrationTest(unittest.TestCase):88    def setUp(self):89        self.manager = DummyMigrationManager()90    def _do_migration(self, migration_module):91        migration = migrate.Migration('name', 1, migration_module)92        migration.migrate_up(self.manager)93        migration.migrate_down(self.manager)...

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