def _reset_databases(self):
for key, engine in self.engines.items():
conn_string = self.test_databases[key]
conn_pieces = parse.urlparse(conn_string)
engine.dispose()
if conn_string.startswith('sqlite'):
# We can just delete the SQLite database, which is
# the easiest and cleanest solution
db_path = conn_pieces.path.strip('/')
if os.path.exists(db_path):
os.unlink(db_path)
# No need to recreate the SQLite DB. SQLite will
# create it for us if it's not there...
elif conn_string.startswith('mysql'):
# We can execute the MySQL client to destroy and re-create
# the MYSQL database, which is easier and less error-prone
# than using SQLAlchemy to do this via MetaData...trust me.
(user, password, database, host) = \
utils.get_db_connection_info(conn_pieces)
sql = ("drop database if exists %(db)s; "
"create database %(db)s;") % {'db': database}
cmd = ("mysql -u \"%(user)s\" -p\"%(password)s\" -h %(host)s "
"-e \"%(sql)s\"") % {'user': user, 'password': password,
'host': host, 'sql': sql}
self.execute_cmd(cmd)
elif conn_string.startswith('postgresql'):
self._reset_pg(conn_pieces)
def _reset_pg(self, conn_pieces):
(user,
password,
database,
host) = utils.get_db_connection_info(conn_pieces)
os.environ['PGPASSWORD'] = password
os.environ['PGUSER'] = user
# note(boris-42): We must create and drop database, we can't
# drop database which we have connected to, so for such
# operations there is a special database template1.
sqlcmd = ("psql -w -U %(user)s -h %(host)s -c"
" '%(sql)s' -d template1")
sql = ("drop database if exists %s;") % database
droptable = sqlcmd % {'user': user, 'host': host, 'sql': sql}
self.execute_cmd(droptable)
sql = ("create database %s;") % database
createtable = sqlcmd % {'user': user, 'host': host, 'sql': sql}
self.execute_cmd(createtable)
os.unsetenv('PGPASSWORD')
os.unsetenv('PGUSER')