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from sqlalchemy.test.testing import assert_raises, assert_raises_message
import sqlalchemy as sa
from sqlalchemy.test import testing
from sqlalchemy.orm import scoped_session
from sqlalchemy import Integer, String, ForeignKey
from sqlalchemy.test.schema import Table, Column
from sqlalchemy.orm import mapper, relationship, query
from sqlalchemy.test.testing import eq_
from test.orm import _base
class _ScopedTest(_base.MappedTest):
"""Adds another lookup bucket to emulate Session globals."""
run_setup_mappers = 'once'
_artifact_registries = (
_base.MappedTest._artifact_registries + ('scoping',))
@classmethod
def setup_class(cls):
cls.scoping = _base.adict()
super(_ScopedTest, cls).setup_class()
@classmethod
def teardown_class(cls):
cls.scoping.clear()
super(_ScopedTest, cls).teardown_class()
class ScopedSessionTest(_base.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table('table1', metadata,
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
Column('data', String(30)))
Table('table2', metadata,
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
Column('someid', None, ForeignKey('table1.id')))
@testing.resolve_artifact_names
def test_basic(self):
Session = scoped_session(sa.orm.sessionmaker())
class CustomQuery(query.Query):
pass
class SomeObject(_base.ComparableEntity):
query = Session.query_property()
class SomeOtherObject(_base.ComparableEntity):
query = Session.query_property()
custom_query = Session.query_property(query_cls=CustomQuery)
mapper(SomeObject, table1, properties={
'options':relationship(SomeOtherObject)})
mapper(SomeOtherObject, table2)
s = SomeObject(id=1, data="hello")
sso = SomeOtherObject()
s.options.append(sso)
Session.add(s)
Session.commit()
Session.refresh(sso)
Session.remove()
eq_(SomeObject(id=1, data="hello", options=[SomeOtherObject(someid=1)]),
Session.query(SomeObject).one())
eq_(SomeObject(id=1, data="hello", options=[SomeOtherObject(someid=1)]),
SomeObject.query.one())
eq_(SomeOtherObject(someid=1),
SomeOtherObject.query.filter(
SomeOtherObject.someid == sso.someid).one())
assert isinstance(SomeOtherObject.query, query.Query)
assert not isinstance(SomeOtherObject.query, CustomQuery)
assert isinstance(SomeOtherObject.custom_query, query.Query)
class ScopedMapperTest(_ScopedTest):
@classmethod
def define_tables(cls, metadata):
Table('table1', metadata,
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
Column('data', String(30)))
Table('table2', metadata,
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
Column('someid', None, ForeignKey('table1.id')))
@classmethod
def setup_classes(cls):
class SomeObject(_base.ComparableEntity):
pass
class SomeOtherObject(_base.ComparableEntity):
pass
@classmethod
@testing.uses_deprecated()
@testing.resolve_artifact_names
def setup_mappers(cls):
Session = scoped_session(sa.orm.create_session)
Session.mapper(SomeObject, table1, properties={
'options':relationship(SomeOtherObject)
})
Session.mapper(SomeOtherObject, table2)
cls.scoping['Session'] = Session
@classmethod
@testing.resolve_artifact_names
def insert_data(cls):
s = SomeObject()
s.id = 1
s.data = 'hello'
sso = SomeOtherObject()
s.options.append(sso)
Session.flush()
Session.expunge_all()
@testing.resolve_artifact_names
def test_query(self):
sso = SomeOtherObject.query().first()
assert SomeObject.query.filter_by(id=1).one().options[0].id == sso.id
@testing.uses_deprecated()
@testing.resolve_artifact_names
def test_query_compiles(self):
class Foo(object):
pass
Session.mapper(Foo, table2)
assert hasattr(Foo, 'query')
ext = sa.orm.MapperExtension()
class Bar(object):
pass
Session.mapper(Bar, table2, extension=[ext])
assert hasattr(Bar, 'query')
class Baz(object):
pass
Session.mapper(Baz, table2, extension=ext)
assert hasattr(Baz, 'query')
@testing.uses_deprecated()
@testing.resolve_artifact_names
def test_default_constructor_state_not_shared(self):
scope = scoped_session(sa.orm.sessionmaker())
class A(object):
pass
class B(object):
def __init__(self):
pass
scope.mapper(A, table1)
scope.mapper(B, table2)
A(foo='bar')
assert_raises(TypeError, B, foo='bar')
scope = scoped_session(sa.orm.sessionmaker())
class C(object):
def __init__(self):
pass
class D(object):
pass
scope.mapper(C, table1)
scope.mapper(D, table2)
assert_raises(TypeError, C, foo='bar')
D(foo='bar')
@testing.uses_deprecated()
@testing.resolve_artifact_names
def test_validating_constructor(self):
s2 = SomeObject(someid=12)
s3 = SomeOtherObject(someid=123, bogus=345)
class ValidatedOtherObject(object): pass
Session.mapper(ValidatedOtherObject, table2, validate=True)
v1 = ValidatedOtherObject(someid=12)
assert_raises(sa.exc.ArgumentError, ValidatedOtherObject,
someid=12, bogus=345)
@testing.uses_deprecated()
@testing.resolve_artifact_names
def test_dont_clobber_methods(self):
class MyClass(object):
def expunge(self):
return "an expunge !"
Session.mapper(MyClass, table2)
assert MyClass().expunge() == "an expunge !"
class ScopedMapperTest2(_ScopedTest):
@classmethod
def define_tables(cls, metadata):
Table('table1', metadata,
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
Column('data', String(30)),
Column('type', String(30)))
Table('table2', metadata,
Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
Column('someid', None, ForeignKey('table1.id')),
Column('somedata', String(30)))
@classmethod
def setup_classes(cls):
class BaseClass(_base.ComparableEntity):
pass
class SubClass(BaseClass):
pass
@classmethod
@testing.uses_deprecated()
@testing.resolve_artifact_names
def setup_mappers(cls):
Session = scoped_session(sa.orm.sessionmaker())
Session.mapper(BaseClass, table1,
polymorphic_identity='base',
polymorphic_on=table1.c.type)
Session.mapper(SubClass, table2,
polymorphic_identity='sub',
inherits=BaseClass)
cls.scoping['Session'] = Session
@testing.resolve_artifact_names
def test_inheritance(self):
def expunge_list(l):
for x in l:
Session.expunge(x)
return l
b = BaseClass(data='b1')
s = SubClass(data='s1', somedata='somedata')
Session.commit()
Session.expunge_all()
eq_(expunge_list([BaseClass(data='b1'),
SubClass(data='s1', somedata='somedata')]),
BaseClass.query.all())
eq_(expunge_list([SubClass(data='s1', somedata='somedata')]),
SubClass.query.all())
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