mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-06-02 05:48:52 -04:00
Mike Bayer
90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
from sqlalchemy import *
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from sqlalchemy import util
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from sqlalchemy.orm import *
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from sqlalchemy.util import function_named
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from test.orm import _base, _fixtures
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from sqlalchemy.test.schema import Table, Column
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class ABCTest(_base.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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global a, b, c
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a = Table('a', metadata,
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Column('id', Integer, primary_key=True, test_needs_autoincrement=True),
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Column('adata', String(30)),
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Column('type', String(30)),
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)
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b = Table('b', metadata,
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Column('id', Integer, ForeignKey('a.id'), primary_key=True),
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Column('bdata', String(30)))
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c = Table('c', metadata,
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Column('id', Integer, ForeignKey('b.id'), primary_key=True),
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Column('cdata', String(30)))
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def make_test(fetchtype):
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def test_roundtrip(self):
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class A(_fixtures.Base):pass
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class B(A):pass
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class C(B):pass
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if fetchtype == 'union':
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abc = a.outerjoin(b).outerjoin(c)
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bc = a.join(b).outerjoin(c)
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else:
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abc = bc = None
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mapper(A, a, with_polymorphic=('*', abc), polymorphic_on=a.c.type, polymorphic_identity='a')
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mapper(B, b, with_polymorphic=('*', bc), inherits=A, polymorphic_identity='b')
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mapper(C, c, inherits=B, polymorphic_identity='c')
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a1 = A(adata='a1')
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b1 = B(bdata='b1', adata='b1')
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b2 = B(bdata='b2', adata='b2')
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b3 = B(bdata='b3', adata='b3')
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c1 = C(cdata='c1', bdata='c1', adata='c1')
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c2 = C(cdata='c2', bdata='c2', adata='c2')
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c3 = C(cdata='c2', bdata='c2', adata='c2')
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sess = create_session()
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for x in (a1, b1, b2, b3, c1, c2, c3):
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sess.add(x)
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sess.flush()
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sess.expunge_all()
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#for obj in sess.query(A).all():
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# print obj
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assert [
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A(adata='a1'),
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B(bdata='b1', adata='b1'),
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B(bdata='b2', adata='b2'),
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B(bdata='b3', adata='b3'),
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C(cdata='c1', bdata='c1', adata='c1'),
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C(cdata='c2', bdata='c2', adata='c2'),
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C(cdata='c2', bdata='c2', adata='c2'),
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] == sess.query(A).order_by(A.id).all()
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assert [
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B(bdata='b1', adata='b1'),
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B(bdata='b2', adata='b2'),
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B(bdata='b3', adata='b3'),
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C(cdata='c1', bdata='c1', adata='c1'),
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C(cdata='c2', bdata='c2', adata='c2'),
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C(cdata='c2', bdata='c2', adata='c2'),
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] == sess.query(B).all()
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assert [
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C(cdata='c1', bdata='c1', adata='c1'),
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C(cdata='c2', bdata='c2', adata='c2'),
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C(cdata='c2', bdata='c2', adata='c2'),
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] == sess.query(C).all()
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test_roundtrip = function_named(
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test_roundtrip, 'test_%s' % fetchtype)
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return test_roundtrip
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test_union = make_test('union')
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test_none = make_test('none')
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