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from sqlalchemy import MetaData, Table, Column, String, Unicode, Integer, \
create_engine
from sqlalchemy.testing import fixtures, AssertsExecutionResults, profiling
from sqlalchemy import testing
from sqlalchemy.testing import eq_
from sqlalchemy.util import u
from sqlalchemy.engine.result import RowProxy
import sys
NUM_FIELDS = 10
NUM_RECORDS = 1000
t = t2 = metadata = None
class ResultSetTest(fixtures.TestBase, AssertsExecutionResults):
__backend__ = True
@classmethod
def setup_class(cls):
global t, t2, metadata
metadata = MetaData(testing.db)
t = Table('table', metadata, *[Column('field%d' % fnum, String(50))
for fnum in range(NUM_FIELDS)])
t2 = Table(
'table2', metadata, *
[Column('field%d' % fnum, Unicode(50))
for fnum in range(NUM_FIELDS)])
def setup(self):
metadata.create_all()
t.insert().execute([dict(('field%d' % fnum, u('value%d' % fnum))
for fnum in range(NUM_FIELDS)) for r_num in
range(NUM_RECORDS)])
t2.insert().execute([dict(('field%d' % fnum, u('value%d' % fnum))
for fnum in range(NUM_FIELDS)) for r_num in
range(NUM_RECORDS)])
# warm up type caches
t.select().execute().fetchall()
t2.select().execute().fetchall()
def teardown(self):
metadata.drop_all()
@profiling.function_call_count()
def test_string(self):
[tuple(row) for row in t.select().execute().fetchall()]
@profiling.function_call_count()
def test_unicode(self):
[tuple(row) for row in t2.select().execute().fetchall()]
def test_contains_doesnt_compile(self):
row = t.select().execute().first()
c1 = Column('some column', Integer) + \
Column("some other column", Integer)
@profiling.function_call_count()
def go():
c1 in row
go()
class ExecutionTest(fixtures.TestBase):
__backend__ = True
def test_minimal_connection_execute(self):
# create an engine without any instrumentation.
e = create_engine('sqlite://')
c = e.connect()
# ensure initial connect activities complete
c.execute("select 1")
@profiling.function_call_count()
def go():
c.execute("select 1")
try:
go()
finally:
c.close()
def test_minimal_engine_execute(self, variance=0.10):
# create an engine without any instrumentation.
e = create_engine('sqlite://')
# ensure initial connect activities complete
e.execute("select 1")
@profiling.function_call_count()
def go():
e.execute("select 1")
go()
class RowProxyTest(fixtures.TestBase):
__requires__ = 'cpython',
__backend__ = True
def _rowproxy_fixture(self, keys, processors, row):
class MockMeta(object):
def __init__(self):
pass
metadata = MockMeta()
keymap = {}
for index, (keyobjs, processor, values) in \
enumerate(list(zip(keys, processors, row))):
for key in keyobjs:
keymap[key] = (processor, key, index)
keymap[index] = (processor, key, index)
return RowProxy(metadata, row, processors, keymap)
def _test_getitem_value_refcounts(self, seq_factory):
col1, col2 = object(), object()
def proc1(value):
return value
value1, value2 = "x", "y"
row = self._rowproxy_fixture(
[(col1, "a"), (col2, "b")],
[proc1, None],
seq_factory([value1, value2])
)
v1_refcount = sys.getrefcount(value1)
v2_refcount = sys.getrefcount(value2)
for i in range(10):
row[col1]
row["a"]
row[col2]
row["b"]
row[0]
row[1]
row[0:2]
eq_(sys.getrefcount(value1), v1_refcount)
eq_(sys.getrefcount(value2), v2_refcount)
def test_value_refcounts_pure_tuple(self):
self._test_getitem_value_refcounts(tuple)
def test_value_refcounts_custom_seq(self):
class CustomSeq(object):
def __init__(self, data):
self.data = data
def __getitem__(self, item):
return self.data[item]
def __iter__(self):
return iter(self.data)
self._test_getitem_value_refcounts(CustomSeq)
|
