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from sqlalchemy import ForeignKey
from sqlalchemy import Integer
from sqlalchemy import MetaData
from sqlalchemy import String
from sqlalchemy import testing
from sqlalchemy.orm import clear_mappers
from sqlalchemy.orm import decl_api as decl
from sqlalchemy.orm import relationship
from sqlalchemy.testing import assert_raises
from sqlalchemy.testing import eq_
from sqlalchemy.testing import fixtures
from sqlalchemy.testing.fixtures import fixture_session
from sqlalchemy.testing.schema import Column
from sqlalchemy.testing.schema import Table
class DeclarativeReflectionBase(fixtures.TablesTest):
__requires__ = ("reflectable_autoincrement",)
def setup_test(self):
global Base, registry
registry = decl.registry(metadata=MetaData())
Base = registry.generate_base()
def teardown_test(self):
clear_mappers()
class DeclarativeReflectionTest(DeclarativeReflectionBase):
@classmethod
def define_tables(cls, metadata):
Table(
"users",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("name", String(50)),
test_needs_fk=True,
)
Table(
"addresses",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("email", String(50)),
Column("user_id", Integer, ForeignKey("users.id")),
test_needs_fk=True,
)
Table(
"imhandles",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("user_id", Integer),
Column("network", String(50)),
Column("handle", String(50)),
test_needs_fk=True,
)
def test_basic(self):
class User(Base, fixtures.ComparableEntity):
__tablename__ = "users"
__autoload_with__ = testing.db
addresses = relationship("Address", backref="user")
class Address(Base, fixtures.ComparableEntity):
__tablename__ = "addresses"
__autoload_with__ = testing.db
u1 = User(
name="u1", addresses=[Address(email="one"), Address(email="two")]
)
sess = fixture_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(
sess.query(User).all(),
[
User(
name="u1",
addresses=[Address(email="one"), Address(email="two")],
)
],
)
a1 = sess.query(Address).filter(Address.email == "two").one()
eq_(a1, Address(email="two"))
eq_(a1.user, User(name="u1"))
def test_rekey_wbase(self):
class User(Base, fixtures.ComparableEntity):
__tablename__ = "users"
__autoload_with__ = testing.db
nom = Column("name", String(50), key="nom")
addresses = relationship("Address", backref="user")
class Address(Base, fixtures.ComparableEntity):
__tablename__ = "addresses"
__autoload_with__ = testing.db
u1 = User(
nom="u1", addresses=[Address(email="one"), Address(email="two")]
)
sess = fixture_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(
sess.query(User).all(),
[
User(
nom="u1",
addresses=[Address(email="one"), Address(email="two")],
)
],
)
a1 = sess.query(Address).filter(Address.email == "two").one()
eq_(a1, Address(email="two"))
eq_(a1.user, User(nom="u1"))
assert_raises(TypeError, User, name="u3")
def test_rekey_wdecorator(self):
@registry.mapped
class User(fixtures.ComparableMixin):
__tablename__ = "users"
__autoload_with__ = testing.db
nom = Column("name", String(50), key="nom")
addresses = relationship("Address", backref="user")
@registry.mapped
class Address(fixtures.ComparableMixin):
__tablename__ = "addresses"
__autoload_with__ = testing.db
u1 = User(
nom="u1", addresses=[Address(email="one"), Address(email="two")]
)
sess = fixture_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(
sess.query(User).all(),
[
User(
nom="u1",
addresses=[Address(email="one"), Address(email="two")],
)
],
)
a1 = sess.query(Address).filter(Address.email == "two").one()
eq_(a1, Address(email="two"))
eq_(a1.user, User(nom="u1"))
assert_raises(TypeError, User, name="u3")
def test_supplied_fk(self):
class IMHandle(Base, fixtures.ComparableEntity):
__tablename__ = "imhandles"
__autoload_with__ = testing.db
user_id = Column("user_id", Integer, ForeignKey("users.id"))
class User(Base, fixtures.ComparableEntity):
__tablename__ = "users"
__autoload_with__ = testing.db
handles = relationship("IMHandle", backref="user")
u1 = User(
name="u1",
handles=[
IMHandle(network="blabber", handle="foo"),
IMHandle(network="lol", handle="zomg"),
],
)
sess = fixture_session()
sess.add(u1)
sess.flush()
sess.expunge_all()
eq_(
sess.query(User).all(),
[
User(
name="u1",
handles=[
IMHandle(network="blabber", handle="foo"),
IMHandle(network="lol", handle="zomg"),
],
)
],
)
a1 = sess.query(IMHandle).filter(IMHandle.handle == "zomg").one()
eq_(a1, IMHandle(network="lol", handle="zomg"))
eq_(a1.user, User(name="u1"))
|
