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# coding: utf-8
from sqlalchemy import desc
from sqlalchemy import ForeignKey
from sqlalchemy import func
from sqlalchemy import Integer
from sqlalchemy import join
from sqlalchemy import literal_column
from sqlalchemy import MetaData
from sqlalchemy import select
from sqlalchemy import String
from sqlalchemy import testing
from sqlalchemy.ext import serializer
from sqlalchemy.orm import aliased
from sqlalchemy.orm import class_mapper
from sqlalchemy.orm import configure_mappers
from sqlalchemy.orm import joinedload
from sqlalchemy.orm import mapper
from sqlalchemy.orm import relationship
from sqlalchemy.orm import scoped_session
from sqlalchemy.orm import sessionmaker
from sqlalchemy.testing import AssertsCompiledSQL
from sqlalchemy.testing import eq_
from sqlalchemy.testing import fixtures
from sqlalchemy.testing.schema import Column
from sqlalchemy.testing.schema import Table
from sqlalchemy.util import ue
def pickle_protocols():
return iter([-1, 1, 2])
# return iter([-1, 0, 1, 2])
class User(fixtures.ComparableEntity):
pass
class Address(fixtures.ComparableEntity):
pass
users = addresses = Session = None
class SerializeTest(AssertsCompiledSQL, fixtures.MappedTest):
run_setup_mappers = "once"
run_inserts = "once"
run_deletes = None
@classmethod
def define_tables(cls, metadata):
global users, addresses
users = Table(
"users",
metadata,
Column("id", Integer, primary_key=True),
Column("name", String(50)),
)
addresses = Table(
"addresses",
metadata,
Column("id", Integer, primary_key=True),
Column("email", String(50)),
Column("user_id", Integer, ForeignKey("users.id")),
)
@classmethod
def setup_mappers(cls):
global Session
Session = scoped_session(sessionmaker())
mapper(
User,
users,
properties={
"addresses": relationship(
Address, backref="user", order_by=addresses.c.id
)
},
)
mapper(Address, addresses)
configure_mappers()
@classmethod
def insert_data(cls):
params = [
dict(list(zip(("id", "name"), column_values)))
for column_values in [
(7, "jack"),
(8, "ed"),
(9, "fred"),
(10, "chuck"),
]
]
users.insert().execute(params)
addresses.insert().execute(
[
dict(list(zip(("id", "user_id", "email"), column_values)))
for column_values in [
(1, 7, "jack@bean.com"),
(2, 8, "ed@wood.com"),
(3, 8, "ed@bettyboop.com"),
(4, 8, "ed@lala.com"),
(5, 9, "fred@fred.com"),
]
]
)
def test_tables(self):
assert (
serializer.loads(
serializer.dumps(users, -1), users.metadata, Session
)
is users
)
def test_columns(self):
assert (
serializer.loads(
serializer.dumps(users.c.name, -1), users.metadata, Session
)
is users.c.name
)
def test_mapper(self):
user_mapper = class_mapper(User)
assert (
serializer.loads(serializer.dumps(user_mapper, -1), None, None)
is user_mapper
)
def test_attribute(self):
assert (
serializer.loads(serializer.dumps(User.name, -1), None, None)
is User.name
)
def test_expression(self):
expr = select([users]).select_from(users.join(addresses)).limit(5)
re_expr = serializer.loads(
serializer.dumps(expr, -1), users.metadata, None
)
eq_(str(expr), str(re_expr))
assert re_expr.bind is testing.db
eq_(
re_expr.execute().fetchall(),
[(7, "jack"), (8, "ed"), (8, "ed"), (8, "ed"), (9, "fred")],
)
def test_query_one(self):
q = (
Session.query(User)
.filter(User.name == "ed")
.options(joinedload(User.addresses))
)
q2 = serializer.loads(serializer.dumps(q, -1), users.metadata, Session)
def go():
eq_(
q2.all(),
[
User(
name="ed",
addresses=[
Address(id=2),
Address(id=3),
Address(id=4),
],
)
],
)
self.assert_sql_count(testing.db, go, 1)
eq_(
q2.join(User.addresses)
.filter(Address.email == "ed@bettyboop.com")
.value(func.count(literal_column("*"))),
1,
)
u1 = Session.query(User).get(8)
q = (
Session.query(Address)
.filter(Address.user == u1)
.order_by(desc(Address.email))
)
q2 = serializer.loads(serializer.dumps(q, -1), users.metadata, Session)
eq_(
q2.all(),
[
Address(email="ed@wood.com"),
Address(email="ed@lala.com"),
Address(email="ed@bettyboop.com"),
],
)
@testing.requires.non_broken_pickle
def test_query_two(self):
q = (
Session.query(User)
.join(User.addresses)
.filter(Address.email.like("%fred%"))
)
q2 = serializer.loads(serializer.dumps(q, -1), users.metadata, Session)
eq_(q2.all(), [User(name="fred")])
eq_(list(q2.values(User.id, User.name)), [(9, "fred")])
@testing.requires.non_broken_pickle
def test_query_three(self):
ua = aliased(User)
q = (
Session.query(ua)
.join(ua.addresses)
.filter(Address.email.like("%fred%"))
)
for prot in pickle_protocols():
q2 = serializer.loads(
serializer.dumps(q, prot), users.metadata, Session
)
eq_(q2.all(), [User(name="fred")])
# try to pull out the aliased entity here...
ua_2 = q2._entities[0].entity_zero.entity
eq_(list(q2.values(ua_2.id, ua_2.name)), [(9, "fred")])
def test_annotated_one(self):
j = join(users, addresses)._annotate({"foo": "bar"})
query = select([addresses]).select_from(j)
str(query)
for prot in pickle_protocols():
pickled_failing = serializer.dumps(j, prot)
serializer.loads(pickled_failing, users.metadata, None)
@testing.requires.non_broken_pickle
def test_orm_join(self):
from sqlalchemy.orm.util import join
j = join(User, Address, User.addresses)
j2 = serializer.loads(serializer.dumps(j, -1), users.metadata)
assert j2.left is j.left
assert j2.right is j.right
assert j2._target_adapter._next
@testing.exclude(
"sqlite", "<=", (3, 5, 9), "id comparison failing on the buildbot"
)
def test_aliases(self):
u7, u8, u9, u10 = Session.query(User).order_by(User.id).all()
ualias = aliased(User)
q = (
Session.query(User, ualias)
.join(ualias, User.id < ualias.id)
.filter(User.id < 9)
.order_by(User.id, ualias.id)
)
eq_(
list(q.all()), [(u7, u8), (u7, u9), (u7, u10), (u8, u9), (u8, u10)]
)
q2 = serializer.loads(serializer.dumps(q, -1), users.metadata, Session)
eq_(
list(q2.all()),
[(u7, u8), (u7, u9), (u7, u10), (u8, u9), (u8, u10)],
)
@testing.requires.non_broken_pickle
def test_any(self):
r = User.addresses.any(Address.email == "x")
ser = serializer.dumps(r, -1)
x = serializer.loads(ser, users.metadata)
eq_(str(r), str(x))
def test_unicode(self):
m = MetaData()
t = Table(
ue("\u6e2c\u8a66"), m, Column(ue("\u6e2c\u8a66_id"), Integer)
)
expr = select([t]).where(t.c[ue("\u6e2c\u8a66_id")] == 5)
expr2 = serializer.loads(serializer.dumps(expr, -1), m)
self.assert_compile(
expr2,
ue(
'SELECT "\u6e2c\u8a66"."\u6e2c\u8a66_id" FROM "\u6e2c\u8a66" '
'WHERE "\u6e2c\u8a66"."\u6e2c\u8a66_id" = :\u6e2c\u8a66_id_1'
),
dialect="default",
)
if __name__ == "__main__":
testing.main()
|
