mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-06-01 05:18:44 -04:00
Mike Bayer
065fcbd9d2
relationship(), to eliminate confusion over the relational algebra term. relation() however will remain available in equal capacity for the foreseeable future. [ticket:1740]
96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
from sqlalchemy import *
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from sqlalchemy.orm import *
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from sqlalchemy.test.compat import gc_collect
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from sqlalchemy.test import TestBase, AssertsExecutionResults, profiling, testing
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from test.orm import _fixtures
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# in this test we are specifically looking for time spent in the attributes.InstanceState.__cleanup() method.
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ITERATIONS = 100
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class SessionTest(TestBase, AssertsExecutionResults):
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@classmethod
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def setup_class(cls):
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global t1, t2, metadata,T1, T2
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metadata = MetaData(testing.db)
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t1 = Table('t1', metadata,
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Column('c1', Integer, primary_key=True),
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Column('c2', String(30)))
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t2 = Table('t2', metadata,
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Column('c1', Integer, primary_key=True),
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Column('c2', String(30)),
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Column('t1id', Integer, ForeignKey('t1.c1'))
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)
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metadata.create_all()
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l = []
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for x in range(1,51):
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l.append({'c2':'this is t1 #%d' % x})
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t1.insert().execute(*l)
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for x in range(1, 51):
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l = []
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for y in range(1, 100):
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l.append({'c2':'this is t2 #%d' % y, 't1id':x})
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t2.insert().execute(*l)
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class T1(_fixtures.Base):
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pass
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class T2(_fixtures.Base):
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pass
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mapper(T1, t1, properties={
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't2s':relationship(T2, backref='t1')
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})
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mapper(T2, t2)
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@classmethod
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def teardown_class(cls):
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metadata.drop_all()
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clear_mappers()
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@profiling.profiled('clean', report=True)
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def test_session_clean(self):
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for x in range(0, ITERATIONS):
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sess = create_session()
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t1s = sess.query(T1).filter(T1.c1.between(15, 48)).all()
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for index in [2, 7, 12, 15, 18, 20]:
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t1s[index].t2s
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sess.close()
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del sess
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gc_collect()
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@profiling.profiled('dirty', report=True)
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def test_session_dirty(self):
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for x in range(0, ITERATIONS):
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sess = create_session()
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t1s = sess.query(T1).filter(T1.c1.between(15, 48)).all()
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for index in [2, 7, 12, 15, 18, 20]:
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t1s[index].c2 = 'this is some modified text'
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for t2 in t1s[index].t2s:
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t2.c2 = 'this is some modified text'
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del t1s
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gc_collect()
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sess.close()
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del sess
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gc_collect()
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@profiling.profiled('noclose', report=True)
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def test_session_noclose(self):
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for x in range(0, ITERATIONS):
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sess = create_session()
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t1s = sess.query(T1).filter(T1.c1.between(15, 48)).all()
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for index in [2, 7, 12, 15, 18, 20]:
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t1s[index].t2s
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del sess
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gc_collect()
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