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from sqlalchemy import ForeignKey
from sqlalchemy import Integer
from sqlalchemy import String
from sqlalchemy import testing
from sqlalchemy.orm import relationship
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 O2OTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table(
"jack",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("number", String(50)),
Column("status", String(20)),
Column("subroom", String(5)),
)
Table(
"port",
metadata,
Column(
"id", Integer, primary_key=True, test_needs_autoincrement=True
),
Column("name", String(30)),
Column("description", String(100)),
Column("jack_id", Integer, ForeignKey("jack.id")),
)
@classmethod
def setup_mappers(cls):
class Jack(cls.Basic):
pass
class Port(cls.Basic):
pass
@testing.combinations(
(True, False),
(False, False),
(False, True),
argnames="_legacy_inactive_history_style, active_history",
)
def test_basic(self, _legacy_inactive_history_style, active_history):
Port, port, jack, Jack = (
self.classes.Port,
self.tables.port,
self.tables.jack,
self.classes.Jack,
)
self.mapper_registry.map_imperatively(Port, port)
self.mapper_registry.map_imperatively(
Jack,
jack,
properties=dict(
port=relationship(
Port,
backref="jack",
uselist=False,
active_history=active_history,
_legacy_inactive_history_style=(
_legacy_inactive_history_style
),
)
),
)
session = fixture_session()
j = Jack(number="101")
session.add(j)
p = Port(name="fa0/1")
session.add(p)
j.port = p
session.flush()
jid = j.id
pid = p.id
j = session.get(Jack, jid)
p = session.get(Port, pid)
assert p.jack is not None
assert p.jack is j
assert j.port is not None
p.jack = None
assert j.port is None
session.expunge_all()
j = session.get(Jack, jid)
p = session.get(Port, pid)
j.port = None
if not active_history and not _legacy_inactive_history_style:
session.flush()
self.assert_(p.jack is None)
else:
self.assert_(p.jack is None)
session.flush()
session.delete(j)
session.flush()
@testing.combinations(
(True,), (False,), argnames="_legacy_inactive_history_style"
)
def test_simple_replace(self, _legacy_inactive_history_style):
Port, port, jack, Jack = (
self.classes.Port,
self.tables.port,
self.tables.jack,
self.classes.Jack,
)
self.mapper_registry.map_imperatively(Port, port)
self.mapper_registry.map_imperatively(
Jack,
jack,
properties=dict(
port=relationship(
Port,
uselist=False,
_legacy_inactive_history_style=(
_legacy_inactive_history_style
),
)
),
)
s = fixture_session()
p1 = Port(name="p1")
j1 = Jack(number="j1", port=p1)
s.add(j1)
s.commit()
j1.port = Port(name="p2")
s.commit()
assert s.query(Port).filter_by(name="p1").one().jack_id is None
@testing.combinations(
(True,), (False,), argnames="_legacy_inactive_history_style"
)
def test_simple_del(self, _legacy_inactive_history_style):
Port, port, jack, Jack = (
self.classes.Port,
self.tables.port,
self.tables.jack,
self.classes.Jack,
)
self.mapper_registry.map_imperatively(Port, port)
self.mapper_registry.map_imperatively(
Jack,
jack,
properties=dict(
port=relationship(
Port,
uselist=False,
_legacy_inactive_history_style=(
_legacy_inactive_history_style
),
)
),
)
s = fixture_session()
p1 = Port(name="p1")
j1 = Jack(number="j1", port=p1)
s.add(j1)
s.commit()
del j1.port
s.commit()
assert s.query(Port).filter_by(name="p1").one().jack_id is None
|
