showard | f208abc | 2008-04-01 23:57:11 +0000 | [diff] [blame] | 1 | #!/usr/bin/python2.4 |
| 2 | |
| 3 | import unittest |
| 4 | import MySQLdb |
| 5 | import migrate |
mbligh | 9b907d6 | 2008-05-13 17:56:24 +0000 | [diff] [blame] | 6 | import common |
| 7 | from autotest_lib.client.common_lib import global_config |
showard | f208abc | 2008-04-01 23:57:11 +0000 | [diff] [blame] | 8 | |
| 9 | # Which section of the global config to pull info from. We won't actually use |
| 10 | # that DB, we'll use the corresponding test DB (test_<db name>). |
| 11 | CONFIG_DB = 'AUTOTEST_WEB' |
| 12 | |
| 13 | NUM_MIGRATIONS = 3 |
| 14 | |
| 15 | class DummyMigration(object): |
| 16 | """\ |
| 17 | Dummy migration class that records all migrations done in a class |
| 18 | varaible. |
| 19 | """ |
| 20 | |
| 21 | migrations_done = [] |
| 22 | |
| 23 | def __init__(self, version): |
| 24 | self.version = version |
| 25 | self.name = '%03d_test' % version |
| 26 | |
| 27 | |
| 28 | @classmethod |
| 29 | def get_migrations_done(cls): |
| 30 | return cls.migrations_done |
| 31 | |
| 32 | |
| 33 | @classmethod |
| 34 | def clear_migrations_done(cls): |
| 35 | cls.migrations_done = [] |
| 36 | |
| 37 | |
| 38 | @classmethod |
| 39 | def do_migration(cls, version, direction): |
| 40 | cls.migrations_done.append((version, direction)) |
| 41 | |
| 42 | |
| 43 | def migrate_up(self, manager): |
| 44 | self.do_migration(self.version, 'up') |
| 45 | if self.version == 1: |
| 46 | manager.create_migrate_table() |
| 47 | |
| 48 | |
| 49 | def migrate_down(self, manager): |
| 50 | self.do_migration(self.version, 'down') |
| 51 | |
| 52 | |
| 53 | MIGRATIONS = [DummyMigration(n) for n in xrange(1, NUM_MIGRATIONS + 1)] |
| 54 | |
| 55 | |
| 56 | class TestableMigrationManager(migrate.MigrationManager): |
| 57 | def __init__(self, database, migrations_dir=None): |
| 58 | self.database = database |
| 59 | self.migrations_dir = migrations_dir |
| 60 | self.db_host = None |
| 61 | self.db_name = None |
| 62 | self.username = None |
| 63 | self.password = None |
| 64 | |
| 65 | |
| 66 | def read_db_info(self): |
| 67 | migrate.MigrationManager.read_db_info(self) |
| 68 | self.db_name = 'test_' + self.db_name |
| 69 | |
| 70 | |
| 71 | def get_migrations(self, minimum_version=None, maximum_version=None): |
| 72 | minimum_version = minimum_version or 1 |
| 73 | maximum_version = maximum_version or len(MIGRATIONS) |
| 74 | return MIGRATIONS[minimum_version-1:maximum_version] |
| 75 | |
| 76 | |
| 77 | class MigrateManagerTest(unittest.TestCase): |
| 78 | config = global_config.global_config |
| 79 | host = config.get_config_value(CONFIG_DB, 'host') |
| 80 | db_name = 'test_' + config.get_config_value(CONFIG_DB, 'database') |
| 81 | user = config.get_config_value(CONFIG_DB, 'user') |
| 82 | password = config.get_config_value(CONFIG_DB, 'password') |
| 83 | |
| 84 | def do_sql(self, sql): |
| 85 | self.con = MySQLdb.connect(host=self.host, user=self.user, |
| 86 | passwd=self.password) |
| 87 | self.con.autocommit(True) |
| 88 | self.cur = self.con.cursor() |
| 89 | try: |
| 90 | self.cur.execute(sql) |
| 91 | finally: |
| 92 | self.con.close() |
| 93 | |
| 94 | |
| 95 | def remove_db(self): |
| 96 | self.do_sql('DROP DATABASE ' + self.db_name) |
| 97 | |
| 98 | |
| 99 | def setUp(self): |
| 100 | self.do_sql('CREATE DATABASE ' + self.db_name) |
| 101 | try: |
| 102 | self.manager = TestableMigrationManager(CONFIG_DB) |
| 103 | except MySQLdb.OperationalError: |
| 104 | self.remove_db() |
| 105 | raise |
| 106 | DummyMigration.clear_migrations_done() |
| 107 | |
| 108 | |
| 109 | def tearDown(self): |
| 110 | self.remove_db() |
| 111 | |
| 112 | |
| 113 | def test_sync(self): |
| 114 | self.manager.do_sync_db() |
| 115 | self.assertEquals(self.manager.get_db_version(), NUM_MIGRATIONS) |
| 116 | self.assertEquals(DummyMigration.get_migrations_done(), |
| 117 | [(1, 'up'), (2, 'up'), (3, 'up')]) |
| 118 | |
| 119 | DummyMigration.clear_migrations_done() |
| 120 | self.manager.do_sync_db(0) |
| 121 | self.assertEquals(self.manager.get_db_version(), 0) |
| 122 | self.assertEquals(DummyMigration.get_migrations_done(), |
| 123 | [(3, 'down'), (2, 'down'), (1, 'down')]) |
| 124 | |
| 125 | |
| 126 | def test_sync_one_by_one(self): |
| 127 | for version in xrange(1, NUM_MIGRATIONS + 1): |
| 128 | self.manager.do_sync_db(version) |
| 129 | self.assertEquals(self.manager.get_db_version(), |
| 130 | version) |
| 131 | self.assertEquals( |
| 132 | DummyMigration.get_migrations_done()[-1], |
| 133 | (version, 'up')) |
| 134 | |
| 135 | for version in xrange(NUM_MIGRATIONS - 1, -1, -1): |
| 136 | self.manager.do_sync_db(version) |
| 137 | self.assertEquals(self.manager.get_db_version(), |
| 138 | version) |
| 139 | self.assertEquals( |
| 140 | DummyMigration.get_migrations_done()[-1], |
| 141 | (version + 1, 'down')) |
| 142 | |
| 143 | |
| 144 | def test_null_sync(self): |
| 145 | self.manager.do_sync_db() |
| 146 | DummyMigration.clear_migrations_done() |
| 147 | self.manager.do_sync_db() |
| 148 | self.assertEquals(DummyMigration.get_migrations_done(), []) |
| 149 | |
| 150 | |
| 151 | if __name__ == '__main__': |
| 152 | unittest.main() |