mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-17 22:22:13 -04:00
Mike Bayer
c3f102c9fe
It's better, the majority of these changes look more readable to me. also found some docstrings that had formatting / quoting issues. Change-Id: I582a45fde3a5648b2f36bab96bad56881321899b
719 lines
21 KiB
Python
719 lines
21 KiB
Python
import sqlalchemy as sa
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from sqlalchemy import ForeignKey
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from sqlalchemy import inspect
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from sqlalchemy import Integer
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from sqlalchemy import MetaData
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from sqlalchemy import select
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from sqlalchemy import table
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from sqlalchemy import testing
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from sqlalchemy import true
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from sqlalchemy.orm import backref
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from sqlalchemy.orm import create_session
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from sqlalchemy.orm import mapper
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from sqlalchemy.orm import relationship
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from sqlalchemy.orm import Session
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from sqlalchemy.orm import sessionmaker
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from sqlalchemy.orm.query import Query
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from sqlalchemy.testing import assert_raises_message
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from sqlalchemy.testing import engines
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from sqlalchemy.testing import eq_
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from sqlalchemy.testing import fixtures
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from sqlalchemy.testing import is_
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from sqlalchemy.testing import mock
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from sqlalchemy.testing.mock import Mock
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from sqlalchemy.testing.schema import Column
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from sqlalchemy.testing.schema import Table
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from test.orm import _fixtures
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class BindIntegrationTest(_fixtures.FixtureTest):
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run_inserts = None
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def test_mapped_binds(self):
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Address, addresses, users, User = (
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self.classes.Address,
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self.tables.addresses,
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self.tables.users,
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self.classes.User,
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)
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# ensure tables are unbound
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m2 = sa.MetaData()
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users_unbound = users.to_metadata(m2)
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addresses_unbound = addresses.to_metadata(m2)
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mapper(Address, addresses_unbound)
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mapper(
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User,
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users_unbound,
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properties={
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"addresses": relationship(
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Address,
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backref=backref("user", cascade="all"),
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cascade="all",
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)
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},
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)
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sess = Session(
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binds={User: self.metadata.bind, Address: self.metadata.bind}
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)
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u1 = User(id=1, name="ed")
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sess.add(u1)
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eq_(
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sess.query(User).filter(User.id == 1).all(),
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[User(id=1, name="ed")],
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)
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# test expression binding
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sess.execute(users_unbound.insert(), params=dict(id=2, name="jack"))
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eq_(
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sess.execute(
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users_unbound.select(users_unbound.c.id == 2)
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).fetchall(),
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[(2, "jack")],
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)
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eq_(
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sess.execute(users_unbound.select(User.id == 2)).fetchall(),
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[(2, "jack")],
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)
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sess.execute(users_unbound.delete())
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eq_(sess.execute(users_unbound.select()).fetchall(), [])
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sess.close()
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def test_table_binds(self):
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Address, addresses, users, User = (
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self.classes.Address,
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self.tables.addresses,
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self.tables.users,
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self.classes.User,
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)
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# ensure tables are unbound
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m2 = sa.MetaData()
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users_unbound = users.to_metadata(m2)
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addresses_unbound = addresses.to_metadata(m2)
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mapper(Address, addresses_unbound)
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mapper(
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User,
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users_unbound,
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properties={
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"addresses": relationship(
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Address,
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backref=backref("user", cascade="all"),
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cascade="all",
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)
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},
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)
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Session = sessionmaker(
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binds={
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users_unbound: self.metadata.bind,
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addresses_unbound: self.metadata.bind,
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}
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)
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sess = Session()
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u1 = User(id=1, name="ed")
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sess.add(u1)
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eq_(
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sess.query(User).filter(User.id == 1).all(),
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[User(id=1, name="ed")],
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)
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sess.execute(users_unbound.insert(), params=dict(id=2, name="jack"))
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eq_(
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sess.execute(
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users_unbound.select(users_unbound.c.id == 2)
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).fetchall(),
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[(2, "jack")],
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)
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eq_(
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sess.execute(users_unbound.select(User.id == 2)).fetchall(),
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[(2, "jack")],
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)
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sess.execute(users_unbound.delete())
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eq_(sess.execute(users_unbound.select()).fetchall(), [])
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sess.close()
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def test_bind_from_metadata(self):
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users, User = self.tables.users, self.classes.User
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mapper(User, users)
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session = create_session()
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session.execute(users.insert(), dict(name="Johnny"))
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assert len(session.query(User).filter_by(name="Johnny").all()) == 1
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session.execute(users.delete())
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assert len(session.query(User).filter_by(name="Johnny").all()) == 0
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session.close()
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@testing.combinations(
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(lambda: {}, "e3"),
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(lambda e1: {"bind": e1}, "e1"),
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(lambda e1, Address: {"bind": e1, "mapper": Address}, "e1"),
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(
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lambda e1, Address: {
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"bind": e1,
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"clause": Query([Address])._statement_20(),
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},
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"e1",
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),
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(lambda Address: {"mapper": Address}, "e2"),
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(lambda Address: {"clause": Query([Address])._statement_20()}, "e2"),
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(lambda addresses: {"clause": select(addresses)}, "e2"),
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(
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lambda User, addresses: {
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"mapper": User,
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"clause": select(addresses),
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},
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"e1",
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),
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(
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lambda e2, User, addresses: {
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"mapper": User,
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"clause": select(addresses),
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"bind": e2,
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},
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"e2",
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),
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(
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lambda User, Address: {
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"clause": select(1).join_from(User, Address)
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},
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"e1",
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),
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(
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lambda User, Address: {
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"clause": select(1).join_from(Address, User)
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},
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"e2",
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),
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(
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lambda User: {"clause": select(1).where(User.name == "ed")},
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"e1",
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),
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(lambda: {"clause": select(1)}, "e3"),
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(lambda User: {"clause": Query([User])._statement_20()}, "e1"),
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(lambda: {"clause": Query([1])._statement_20()}, "e3"),
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(
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lambda User: {
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"clause": Query([1]).select_from(User)._statement_20()
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},
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"e1",
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),
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(
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lambda User: {
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"clause": Query([1])
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.select_from(User)
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.join(User.addresses)
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._statement_20()
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},
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"e1",
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),
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(
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# forcing the "onclause" argument to be considered
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# in visitors.iterate()
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lambda User: {
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"clause": Query([1])
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.select_from(User)
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.join(table("foo"), User.addresses)
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._statement_20()
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},
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"e1",
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),
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(
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lambda User: {
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"clause": select(1).select_from(User).join(User.addresses)
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},
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"e1",
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),
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)
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def test_get_bind(self, testcase, expected):
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users, Address, addresses, User = (
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self.tables.users,
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self.classes.Address,
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self.tables.addresses,
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self.classes.User,
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)
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mapper(User, users, properties={"addresses": relationship(Address)})
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mapper(Address, addresses)
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e1 = engines.testing_engine()
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e2 = engines.testing_engine()
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e3 = engines.testing_engine()
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testcase = testing.resolve_lambda(
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testcase,
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User=User,
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Address=Address,
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e1=e1,
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e2=e2,
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e3=e3,
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addresses=addresses,
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)
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sess = Session(e3)
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sess.bind_mapper(User, e1)
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sess.bind_mapper(Address, e2)
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engine = {"e1": e1, "e2": e2, "e3": e3}[expected]
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conn = sess.connection(**testcase)
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is_(conn.engine, engine)
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sess.close()
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@testing.combinations(
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(
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lambda session, Address: session.query(Address),
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lambda Address: {"mapper": inspect(Address), "clause": mock.ANY},
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"e2",
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),
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(lambda: select(1), lambda: {"clause": mock.ANY}, "e3"),
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(
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lambda User, Address: select(1).join_from(User, Address),
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lambda User: {"clause": mock.ANY, "mapper": inspect(User)},
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"e1",
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),
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(
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lambda User, Address: select(1).join_from(Address, User),
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lambda Address: {"clause": mock.ANY, "mapper": inspect(Address)},
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"e2",
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),
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(
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lambda User: select(1).where(User.name == "ed"),
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# no mapper for this one because the plugin is not "orm"
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lambda User: {"clause": mock.ANY},
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"e1",
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),
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(
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lambda User: select(1).select_from(User).where(User.name == "ed"),
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lambda User: {"clause": mock.ANY, "mapper": inspect(User)},
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"e1",
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),
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(
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lambda User: select(User.id),
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lambda User: {"clause": mock.ANY, "mapper": inspect(User)},
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"e1",
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),
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)
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def test_bind_through_execute(
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self, statement, expected_get_bind_args, expected_engine_name
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):
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users, Address, addresses, User = (
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self.tables.users,
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self.classes.Address,
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self.tables.addresses,
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self.classes.User,
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)
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mapper(User, users, properties={"addresses": relationship(Address)})
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mapper(Address, addresses)
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e1 = engines.testing_engine()
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e2 = engines.testing_engine()
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e3 = engines.testing_engine()
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canary = mock.Mock()
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class GetBindSession(Session):
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def _connection_for_bind(self, bind, **kw):
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canary._connection_for_bind(bind, **kw)
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return mock.Mock()
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def get_bind(self, **kw):
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canary.get_bind(**kw)
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return Session.get_bind(self, **kw)
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sess = GetBindSession(e3, future=True)
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sess.bind_mapper(User, e1)
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sess.bind_mapper(Address, e2)
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lambda_args = dict(
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session=sess,
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User=User,
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Address=Address,
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e1=e1,
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e2=e2,
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e3=e3,
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addresses=addresses,
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)
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statement = testing.resolve_lambda(statement, **lambda_args)
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expected_get_bind_args = testing.resolve_lambda(
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expected_get_bind_args, **lambda_args
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)
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engine = {"e1": e1, "e2": e2, "e3": e3}[expected_engine_name]
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with mock.patch(
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"sqlalchemy.orm.context.ORMCompileState.orm_setup_cursor_result"
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):
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sess.execute(statement)
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eq_(
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canary.mock_calls,
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[
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mock.call.get_bind(**expected_get_bind_args),
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mock.call._connection_for_bind(engine, close_with_result=True),
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],
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)
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sess.close()
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def test_bind_arg(self):
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sess = Session()
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assert_raises_message(
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sa.exc.ArgumentError,
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"Not an acceptable bind target: foobar",
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sess.bind_mapper,
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"foobar",
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testing.db,
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)
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mapper(self.classes.User, self.tables.users)
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u_object = self.classes.User()
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assert_raises_message(
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sa.exc.ArgumentError,
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"Not an acceptable bind target: User()",
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sess.bind_mapper,
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u_object,
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testing.db,
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)
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@engines.close_open_connections
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def test_bound_connection(self):
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users, User = self.tables.users, self.classes.User
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mapper(User, users)
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c = testing.db.connect()
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sess = create_session(bind=c)
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sess.begin()
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transaction = sess.transaction
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u = User(name="u1")
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sess.add(u)
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sess.flush()
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assert (
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transaction._connection_for_bind(testing.db, None)
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is transaction._connection_for_bind(c, None)
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is c
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)
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assert_raises_message(
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sa.exc.InvalidRequestError,
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"Session already has a Connection " "associated",
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transaction._connection_for_bind,
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testing.db.connect(),
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None,
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)
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transaction.rollback()
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assert len(sess.query(User).all()) == 0
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sess.close()
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def test_bound_connection_transactional(self):
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User, users = self.classes.User, self.tables.users
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mapper(User, users)
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c = testing.db.connect()
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sess = create_session(bind=c, autocommit=False)
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u = User(name="u1")
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sess.add(u)
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sess.flush()
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sess.close()
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assert not c.in_transaction()
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assert c.exec_driver_sql("select count(1) from users").scalar() == 0
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sess = create_session(bind=c, autocommit=False)
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u = User(name="u2")
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sess.add(u)
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sess.flush()
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sess.commit()
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assert not c.in_transaction()
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assert c.exec_driver_sql("select count(1) from users").scalar() == 1
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c.exec_driver_sql("delete from users")
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assert c.exec_driver_sql("select count(1) from users").scalar() == 0
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c = testing.db.connect()
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trans = c.begin()
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sess = create_session(bind=c, autocommit=True)
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u = User(name="u3")
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sess.add(u)
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sess.flush()
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assert c.in_transaction()
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trans.commit()
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assert not c.in_transaction()
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assert c.exec_driver_sql("select count(1) from users").scalar() == 1
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|
|
|
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class SessionBindTest(fixtures.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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Table(
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"test_table",
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metadata,
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Column(
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"id", Integer, primary_key=True, test_needs_autoincrement=True
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),
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Column("data", Integer),
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)
|
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|
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@classmethod
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def setup_classes(cls):
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class Foo(cls.Basic):
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pass
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|
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@classmethod
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def setup_mappers(cls):
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test_table, Foo = cls.tables.test_table, cls.classes.Foo
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|
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meta = MetaData()
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test_table.to_metadata(meta)
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assert meta.tables["test_table"].bind is None
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mapper(Foo, meta.tables["test_table"])
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|
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def test_session_bind(self):
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Foo = self.classes.Foo
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|
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engine = self.metadata.bind
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for bind in (engine, engine.connect()):
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try:
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sess = create_session(bind=bind)
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assert sess.bind is bind
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f = Foo()
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sess.add(f)
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sess.flush()
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assert sess.query(Foo).get(f.id) is f
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finally:
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if hasattr(bind, "close"):
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bind.close()
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|
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def test_session_unbound(self):
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Foo = self.classes.Foo
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|
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sess = create_session()
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sess.add(Foo())
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assert_raises_message(
|
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sa.exc.UnboundExecutionError,
|
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(
|
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"Could not locate a bind configured on Mapper|Foo|test_table "
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"or this Session"
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),
|
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sess.flush,
|
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)
|
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|
|
|
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class GetBindTest(fixtures.MappedTest):
|
|
@classmethod
|
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def define_tables(cls, metadata):
|
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Table("base_table", metadata, Column("id", Integer, primary_key=True))
|
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Table(
|
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"w_mixin_table", metadata, Column("id", Integer, primary_key=True)
|
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)
|
|
Table(
|
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"joined_sub_table",
|
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metadata,
|
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Column("id", ForeignKey("base_table.id"), primary_key=True),
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)
|
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Table(
|
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"concrete_sub_table",
|
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metadata,
|
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Column("id", Integer, primary_key=True),
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)
|
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|
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@classmethod
|
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def setup_classes(cls):
|
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class MixinOne(cls.Basic):
|
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pass
|
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|
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class BaseClass(cls.Basic):
|
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pass
|
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|
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class ClassWMixin(MixinOne, cls.Basic):
|
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pass
|
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|
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class JoinedSubClass(BaseClass):
|
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pass
|
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|
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class ConcreteSubClass(BaseClass):
|
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pass
|
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|
|
@classmethod
|
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def setup_mappers(cls):
|
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mapper(cls.classes.ClassWMixin, cls.tables.w_mixin_table)
|
|
mapper(cls.classes.BaseClass, cls.tables.base_table)
|
|
mapper(
|
|
cls.classes.JoinedSubClass,
|
|
cls.tables.joined_sub_table,
|
|
inherits=cls.classes.BaseClass,
|
|
)
|
|
mapper(
|
|
cls.classes.ConcreteSubClass,
|
|
cls.tables.concrete_sub_table,
|
|
inherits=cls.classes.BaseClass,
|
|
concrete=True,
|
|
)
|
|
|
|
def _fixture(self, binds):
|
|
return Session(binds=binds)
|
|
|
|
def test_fallback_table_metadata(self):
|
|
session = self._fixture({})
|
|
is_(session.get_bind(self.classes.BaseClass), testing.db)
|
|
|
|
def test_bind_base_table_base_class(self):
|
|
base_class_bind = Mock()
|
|
session = self._fixture({self.tables.base_table: base_class_bind})
|
|
|
|
is_(session.get_bind(self.classes.BaseClass), base_class_bind)
|
|
|
|
def test_bind_base_table_joined_sub_class(self):
|
|
base_class_bind = Mock()
|
|
session = self._fixture({self.tables.base_table: base_class_bind})
|
|
|
|
is_(session.get_bind(self.classes.BaseClass), base_class_bind)
|
|
is_(session.get_bind(self.classes.JoinedSubClass), base_class_bind)
|
|
|
|
def test_bind_joined_sub_table_joined_sub_class(self):
|
|
base_class_bind = Mock(name="base")
|
|
joined_class_bind = Mock(name="joined")
|
|
session = self._fixture(
|
|
{
|
|
self.tables.base_table: base_class_bind,
|
|
self.tables.joined_sub_table: joined_class_bind,
|
|
}
|
|
)
|
|
|
|
is_(session.get_bind(self.classes.BaseClass), base_class_bind)
|
|
# joined table inheritance has to query based on the base
|
|
# table, so this is what we expect
|
|
is_(session.get_bind(self.classes.JoinedSubClass), base_class_bind)
|
|
|
|
def test_bind_base_table_concrete_sub_class(self):
|
|
base_class_bind = Mock()
|
|
session = self._fixture({self.tables.base_table: base_class_bind})
|
|
|
|
is_(session.get_bind(self.classes.ConcreteSubClass), testing.db)
|
|
|
|
def test_bind_sub_table_concrete_sub_class(self):
|
|
base_class_bind = Mock(name="base")
|
|
concrete_sub_bind = Mock(name="concrete")
|
|
|
|
session = self._fixture(
|
|
{
|
|
self.tables.base_table: base_class_bind,
|
|
self.tables.concrete_sub_table: concrete_sub_bind,
|
|
}
|
|
)
|
|
|
|
is_(session.get_bind(self.classes.BaseClass), base_class_bind)
|
|
is_(session.get_bind(self.classes.ConcreteSubClass), concrete_sub_bind)
|
|
|
|
def test_bind_base_class_base_class(self):
|
|
base_class_bind = Mock()
|
|
session = self._fixture({self.classes.BaseClass: base_class_bind})
|
|
|
|
is_(session.get_bind(self.classes.BaseClass), base_class_bind)
|
|
|
|
def test_bind_mixin_class_simple_class(self):
|
|
base_class_bind = Mock()
|
|
session = self._fixture({self.classes.MixinOne: base_class_bind})
|
|
|
|
is_(session.get_bind(self.classes.ClassWMixin), base_class_bind)
|
|
|
|
def test_bind_base_class_joined_sub_class(self):
|
|
base_class_bind = Mock()
|
|
session = self._fixture({self.classes.BaseClass: base_class_bind})
|
|
|
|
is_(session.get_bind(self.classes.JoinedSubClass), base_class_bind)
|
|
|
|
def test_bind_joined_sub_class_joined_sub_class(self):
|
|
base_class_bind = Mock(name="base")
|
|
joined_class_bind = Mock(name="joined")
|
|
session = self._fixture(
|
|
{
|
|
self.classes.BaseClass: base_class_bind,
|
|
self.classes.JoinedSubClass: joined_class_bind,
|
|
}
|
|
)
|
|
|
|
is_(session.get_bind(self.classes.BaseClass), base_class_bind)
|
|
is_(session.get_bind(self.classes.JoinedSubClass), joined_class_bind)
|
|
|
|
def test_bind_base_class_concrete_sub_class(self):
|
|
base_class_bind = Mock()
|
|
session = self._fixture({self.classes.BaseClass: base_class_bind})
|
|
|
|
is_(session.get_bind(self.classes.ConcreteSubClass), base_class_bind)
|
|
|
|
def test_bind_sub_class_concrete_sub_class(self):
|
|
base_class_bind = Mock(name="base")
|
|
concrete_sub_bind = Mock(name="concrete")
|
|
|
|
session = self._fixture(
|
|
{
|
|
self.classes.BaseClass: base_class_bind,
|
|
self.classes.ConcreteSubClass: concrete_sub_bind,
|
|
}
|
|
)
|
|
|
|
is_(session.get_bind(self.classes.BaseClass), base_class_bind)
|
|
is_(session.get_bind(self.classes.ConcreteSubClass), concrete_sub_bind)
|
|
|
|
@testing.fixture
|
|
def two_table_fixture(self):
|
|
base_class_bind = Mock(name="base")
|
|
concrete_sub_bind = Mock(name="concrete")
|
|
|
|
session = self._fixture(
|
|
{
|
|
self.tables.base_table: base_class_bind,
|
|
self.tables.concrete_sub_table: concrete_sub_bind,
|
|
}
|
|
)
|
|
return session, base_class_bind, concrete_sub_bind
|
|
|
|
def test_bind_selectable_table(self, two_table_fixture):
|
|
session, base_class_bind, concrete_sub_bind = two_table_fixture
|
|
|
|
is_(session.get_bind(clause=self.tables.base_table), base_class_bind)
|
|
is_(
|
|
session.get_bind(clause=self.tables.concrete_sub_table),
|
|
concrete_sub_bind,
|
|
)
|
|
|
|
def test_bind_selectable_join(self, two_table_fixture):
|
|
session, base_class_bind, concrete_sub_bind = two_table_fixture
|
|
|
|
stmt = self.tables.base_table.join(
|
|
self.tables.concrete_sub_table, true()
|
|
)
|
|
is_(session.get_bind(clause=stmt), base_class_bind)
|
|
|
|
def test_bind_selectable_union(self, two_table_fixture):
|
|
session, base_class_bind, concrete_sub_bind = two_table_fixture
|
|
|
|
stmt = select(self.tables.base_table).union(
|
|
select(self.tables.concrete_sub_table)
|
|
)
|
|
is_(session.get_bind(clause=stmt), base_class_bind)
|