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# testing/config.py
# Copyright (C) 2005-2014 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
"""NOTE: copied/adapted from SQLAlchemy master for backwards compatibility;
this should be removable when Alembic targets SQLAlchemy 1.0.0
"""
import collections
requirements = None
db = None
db_url = None
db_opts = None
file_config = None
test_schema = None
test_schema_2 = None
_current = None
class Config(object):
def __init__(self, db, db_opts, options, file_config):
self.db = db
self.db_opts = db_opts
self.options = options
self.file_config = file_config
self.test_schema = "test_schema"
self.test_schema_2 = "test_schema_2"
_stack = collections.deque()
_configs = {}
@classmethod
def register(cls, db, db_opts, options, file_config):
"""add a config as one of the global configs.
If there are no configs set up yet, this config also
gets set as the "_current".
"""
cfg = Config(db, db_opts, options, file_config)
cls._configs[cfg.db.name] = cfg
cls._configs[(cfg.db.name, cfg.db.dialect)] = cfg
cls._configs[cfg.db] = cfg
return cfg
@classmethod
def set_as_current(cls, config):
global db, _current, db_url, test_schema, test_schema_2, db_opts
_current = config
db_url = config.db.url
db_opts = config.db_opts
test_schema = config.test_schema
test_schema_2 = config.test_schema_2
db = config.db
@classmethod
def push_engine(cls, db):
assert _current, "Can't push without a default Config set up"
cls.push(
Config(
db, _current.db_opts, _current.options, _current.file_config)
)
@classmethod
def push(cls, config):
cls._stack.append(_current)
cls.set_as_current(config)
@classmethod
def reset(cls):
if cls._stack:
cls.set_as_current(cls._stack[0])
cls._stack.clear()
@classmethod
def all_configs(cls):
for cfg in set(cls._configs.values()):
yield cfg
@classmethod
def all_dbs(cls):
for cfg in cls.all_configs():
yield cfg.db