/usr/lib/python2.7/dist-packages/migrate/tests/fixture/database.py is in python-migrate 0.9.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import logging
import sys
import six
from decorator import decorator
from sqlalchemy import create_engine, Table, MetaData
from sqlalchemy import exc as sa_exc
from sqlalchemy.orm import create_session
from sqlalchemy.pool import StaticPool
from migrate.changeset.schema import ColumnDelta
from migrate.versioning.util import Memoize
from migrate.tests.fixture.base import Base
from migrate.tests.fixture.pathed import Pathed
log = logging.getLogger(__name__)
@Memoize
def readurls():
"""read URLs from config file return a list"""
# TODO: remove tmpfile since sqlite can store db in memory
filename = 'test_db.cfg' if six.PY2 else "test_db_py3.cfg"
ret = list()
tmpfile = Pathed.tmp()
fullpath = os.path.join(os.curdir, filename)
try:
fd = open(fullpath)
except IOError:
raise IOError("""You must specify the databases to use for testing!
Copy %(filename)s.tmpl to %(filename)s and edit your database URLs.""" % locals())
for line in fd:
if line.startswith('#'):
continue
line = line.replace('__tmp__', tmpfile).strip()
ret.append(line)
fd.close()
return ret
def is_supported(url, supported, not_supported):
db = url.split(':', 1)[0]
if supported is not None:
if isinstance(supported, six.string_types):
return supported == db
else:
return db in supported
elif not_supported is not None:
if isinstance(not_supported, six.string_types):
return not_supported != db
else:
return not (db in not_supported)
return True
def usedb(supported=None, not_supported=None):
"""Decorates tests to be run with a database connection
These tests are run once for each available database
@param supported: run tests for ONLY these databases
@param not_supported: run tests for all databases EXCEPT these
If both supported and not_supported are empty, all dbs are assumed
to be supported
"""
if supported is not None and not_supported is not None:
raise AssertionError("Can't specify both supported and not_supported in fixture.db()")
urls = readurls()
my_urls = [url for url in urls if is_supported(url, supported, not_supported)]
@decorator
def dec(f, self, *a, **kw):
failed_for = []
fail = False
for url in my_urls:
try:
log.debug("Running test with engine %s", url)
try:
self._setup(url)
except sa_exc.OperationalError:
log.info('Backend %s is not available, skip it', url)
continue
except Exception as e:
setup_exception = e
else:
setup_exception = None
try:
f(self, *a, **kw)
finally:
try:
self._teardown()
except Exception as e:
teardown_exception=e
else:
teardown_exception=None
if setup_exception or teardown_exception:
raise RuntimeError((
'Exception during _setup/_teardown:\n'
'setup: %r\n'
'teardown: %r\n'
)%(setup_exception,teardown_exception))
except Exception:
failed_for.append(url)
fail = sys.exc_info()
for url in failed_for:
log.error('Failed for %s', url)
if fail:
# cause the failure :-)
six.reraise(*fail)
return dec
class DB(Base):
# Constants: connection level
NONE = 0 # No connection; just set self.url
CONNECT = 1 # Connect; no transaction
TXN = 2 # Everything in a transaction
level = TXN
def _engineInfo(self, url=None):
if url is None:
url = self.url
return url
def _setup(self, url):
self._connect(url)
# make sure there are no tables lying around
meta = MetaData(self.engine)
meta.reflect()
meta.drop_all()
def _teardown(self):
self._disconnect()
def _connect(self, url):
self.url = url
# TODO: seems like 0.5.x branch does not work with engine.dispose and staticpool
#self.engine = create_engine(url, echo=True, poolclass=StaticPool)
self.engine = create_engine(url, echo=True)
# silence the logger added by SA, nose adds its own!
logging.getLogger('sqlalchemy').handlers=[]
self.meta = MetaData(bind=self.engine)
if self.level < self.CONNECT:
return
#self.session = create_session(bind=self.engine)
if self.level < self.TXN:
return
#self.txn = self.session.begin()
def _disconnect(self):
if hasattr(self, 'txn'):
self.txn.rollback()
if hasattr(self, 'session'):
self.session.close()
#if hasattr(self,'conn'):
# self.conn.close()
self.engine.dispose()
def _supported(self, url):
db = url.split(':',1)[0]
func = getattr(self, self._TestCase__testMethodName)
if hasattr(func, 'supported'):
return db in func.supported
if hasattr(func, 'not_supported'):
return not (db in func.not_supported)
# Neither list assigned; assume all are supported
return True
def _not_supported(self, url):
return not self._supported(url)
def _select_row(self):
"""Select rows, used in multiple tests"""
return self.table.select().execution_options(
autocommit=True).execute().fetchone()
def refresh_table(self, name=None):
"""Reload the table from the database
Assumes we're working with only a single table, self.table, and
metadata self.meta
Working w/ multiple tables is not possible, as tables can only be
reloaded with meta.clear()
"""
if name is None:
name = self.table.name
self.meta.clear()
self.table = Table(name, self.meta, autoload=True)
def compare_columns_equal(self, columns1, columns2, ignore=None):
"""Loop through all columns and compare them"""
def key(column):
return column.name
for c1, c2 in zip(sorted(columns1, key=key), sorted(columns2, key=key)):
diffs = ColumnDelta(c1, c2).diffs
if ignore:
for key in ignore:
diffs.pop(key, None)
if diffs:
self.fail("Comparing %s to %s failed: %s" % (columns1, columns2, diffs))
# TODO: document engine.dispose and write tests
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