dibbler/sqlalchemy/test/util.py

53 lines
1.2 KiB
Python

from sqlalchemy.util import jython, function_named
import gc
import time
if jython:
def gc_collect(*args):
"""aggressive gc.collect for tests."""
gc.collect()
time.sleep(0.1)
gc.collect()
gc.collect()
return 0
# "lazy" gc, for VM's that don't GC on refcount == 0
lazy_gc = gc_collect
else:
# assume CPython - straight gc.collect, lazy_gc() is a pass
gc_collect = gc.collect
def lazy_gc():
pass
def picklers():
picklers = set()
# Py2K
try:
import cPickle
picklers.add(cPickle)
except ImportError:
pass
# end Py2K
import pickle
picklers.add(pickle)
# yes, this thing needs this much testing
for pickle in picklers:
for protocol in -1, 0, 1, 2:
yield pickle.loads, lambda d:pickle.dumps(d, protocol)
def round_decimal(value, prec):
if isinstance(value, float):
return round(value, prec)
import decimal
# can also use shift() here but that is 2.6 only
return (value * decimal.Decimal("1" + "0" * prec)).to_integral(decimal.ROUND_FLOOR) / \
pow(10, prec)