import sqlalchemy as sa
from sqlalchemy import ForeignKey
from sqlalchemy import func
from sqlalchemy import Integer
from sqlalchemy import testing
from sqlalchemy.orm import relationship
from sqlalchemy.testing import config
from sqlalchemy.testing import eq_
from sqlalchemy.testing import fixtures
from sqlalchemy.testing.fixtures import fixture_session
from sqlalchemy.testing.provision import normalize_sequence
from sqlalchemy.testing.schema import Column
from sqlalchemy.testing.schema import Table
from test.orm import _fixtures
class GenerativeQueryTest(fixtures.MappedTest):
run_inserts = "once"
run_deletes = None
@classmethod
def define_tables(cls, metadata):
Table(
"foo",
metadata,
Column(
"id",
Integer,
normalize_sequence(config, sa.Sequence("foo_id_seq")),
primary_key=True,
),
Column("bar", Integer),
Column("range", Integer),
)
@classmethod
def fixtures(cls):
rows = tuple([(i, i % 10) for i in range(100)])
foo_data = (("bar", "range"),) + rows
return dict(foo=foo_data)
@classmethod
def setup_mappers(cls):
foo = cls.tables.foo
class Foo(cls.Basic):
pass
cls.mapper_registry.map_imperatively(Foo, foo)
def test_selectby(self):
Foo = self.classes.Foo
res = fixture_session().query(Foo).filter_by(range=5)
assert res.order_by(Foo.bar)[0].bar == 5
assert res.order_by(sa.desc(Foo.bar))[0].bar == 95
def test_slice(self):
Foo = self.classes.Foo
sess = fixture_session()
query = sess.query(Foo).order_by(Foo.id)
orig = query.all()
assert query[1] == orig[1]
assert list(query[10:20]) == orig[10:20]
assert list(query[10:]) == orig[10:]
assert list(query[:10]) == orig[:10]
assert list(query[:10]) == orig[:10]
assert list(query[5:5]) == orig[5:5]
assert list(query[10:40:3]) == orig[10:40:3]
assert query[10:20][5] == orig[10:20][5]
def test_aggregate(self):
foo, Foo = self.tables.foo, self.classes.Foo
sess = fixture_session()
query = sess.query(Foo)
assert query.count() == 100
assert sess.query(func.min(foo.c.bar)).filter(
foo.c.bar < 30
).one() == (0,)
assert sess.query(func.max(foo.c.bar)).filter(
foo.c.bar < 30
).one() == (29,)
eq_(
query.filter(foo.c.bar < 30)
.with_entities(sa.func.max(foo.c.bar))
.scalar(),
29,
)
@testing.fails_if(
lambda: testing.against("mysql+mysqldb")
and testing.db.dialect.dbapi.version_info[:4] == (1, 2, 1, "gamma"),
"unknown incompatibility",
)
def test_aggregate_1(self):
foo = self.tables.foo
query = fixture_session().query(func.sum(foo.c.bar))
assert query.filter(foo.c.bar < 30).one() == (435,)
@testing.fails_on(
"mssql",
"AVG produces an average as the original column type on mssql.",
)
def test_aggregate_2(self):
foo = self.tables.foo
query = fixture_session().query(func.avg(foo.c.bar))
avg = query.filter(foo.c.bar < 30).one()[0]
eq_(float(round(avg, 1)), 14.5)
@testing.fails_on(
"mssql",
"AVG produces an average as the original column type on mssql.",
)
def test_aggregate_3(self):
foo, Foo = self.tables.foo, self.classes.Foo
query = fixture_session().query(Foo)
avg_f = (
query.filter(foo.c.bar < 30)
.with_entities(sa.func.avg(foo.c.bar))
.scalar()
)
eq_(float(round(avg_f, 1)), 14.5)
avg_o = (
query.filter(foo.c.bar < 30)
.with_entities(sa.func.avg(foo.c.bar))
.scalar()
)
eq_(float(round(avg_o, 1)), 14.5)
def test_filter(self):
Foo = self.classes.Foo
query = fixture_session().query(Foo)
assert query.count() == 100
assert query.filter(Foo.bar < 30).count() == 30
res2 = query.filter(Foo.bar < 30).filter(Foo.bar > 10)
assert res2.count() == 19
def test_order_by(self):
Foo = self.classes.Foo
query = fixture_session().query(Foo)
assert query.order_by(Foo.bar)[0].bar == 0
assert query.order_by(sa.desc(Foo.bar))[0].bar == 99
def test_offset_order_by(self):
Foo = self.classes.Foo
query = fixture_session().query(Foo)
assert list(query.order_by(Foo.bar).offset(10))[0].bar == 10
def test_offset(self):
Foo = self.classes.Foo
query = fixture_session().query(Foo)
assert len(list(query.limit(10))) == 10
class GenerativeTest2(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table("table1", metadata, Column("id", Integer, primary_key=True))
Table(
"table2",
metadata,
Column("t1id", Integer, ForeignKey("table1.id"), primary_key=True),
Column("num", Integer, primary_key=True),
)
@classmethod
def setup_mappers(cls):
table2, table1 = cls.tables.table2, cls.tables.table1
class Obj1(cls.Basic):
pass
class Obj2(cls.Basic):
pass
cls.mapper_registry.map_imperatively(Obj1, table1)
cls.mapper_registry.map_imperatively(Obj2, table2)
@classmethod
def fixtures(cls):
return dict(
table1=(("id",), (1,), (2,), (3,), (4,)),
table2=(
("num", "t1id"),
(1, 1),
(2, 1),
(3, 1),
(4, 2),
(5, 2),
(6, 3),
),
)
def test_distinct_count(self):
table2, Obj1, table1 = (
self.tables.table2,
self.classes.Obj1,
self.tables.table1,
)
query = fixture_session().query(Obj1)
eq_(query.count(), 4)
res = query.filter(
sa.and_(table1.c.id == table2.c.t1id, table2.c.t1id == 1)
)
eq_(res.count(), 3)
res = query.filter(
sa.and_(table1.c.id == table2.c.t1id, table2.c.t1id == 1)
).distinct()
eq_(res.count(), 1)
class RelationshipsTest(_fixtures.FixtureTest):
run_setup_mappers = "once"
run_inserts = "once"
run_deletes = None
@classmethod
def setup_mappers(cls):
addresses, Order, User, Address, orders, users = (
cls.tables.addresses,
cls.classes.Order,
cls.classes.User,
cls.classes.Address,
cls.tables.orders,
cls.tables.users,
)
cls.mapper_registry.map_imperatively(
User,
users,
properties={
"orders": relationship(
cls.mapper_registry.map_imperatively(
Order,
orders,
properties={
"addresses": relationship(
cls.mapper_registry.map_imperatively(
Address, addresses
)
)
},
)
)
},
)
def test_join(self):
"""Query.join"""
User, Address = self.classes.User, self.classes.Address
Order = self.classes.Order
session = fixture_session()
q = (
session.query(User)
.outerjoin(User.orders)
.outerjoin(Order.addresses)
.filter(Address.id == 1)
)
eq_([User(id=7)], q.all())
def test_outer_join(self):
"""Query.outerjoin"""
Order, User, Address = (
self.classes.Order,
self.classes.User,
self.classes.Address,
)
session = fixture_session()
q = (
session.query(User)
.outerjoin(User.orders)
.outerjoin(Order.addresses)
.filter(sa.or_(Order.id == None, Address.id == 1))
)
eq_({User(id=7), User(id=8), User(id=10)}, set(q.all()))
def test_outer_join_count(self):
"""test the join and outerjoin functions on Query"""
Order, User, Address = (
self.classes.Order,
self.classes.User,
self.classes.Address,
)
session = fixture_session()
q = (
session.query(User)
.outerjoin(User.orders)
.outerjoin(Order.addresses)
.filter(sa.or_(Order.id == None, Address.id == 1))
)
eq_(q.count(), 4)
def test_from(self):
users, Order, User, Address, orders, addresses = (
self.tables.users,
self.classes.Order,
self.classes.User,
self.classes.Address,
self.tables.orders,
self.tables.addresses,
)
session = fixture_session()
sel = users.outerjoin(orders).outerjoin(
addresses, orders.c.address_id == addresses.c.id
)
q = (
session.query(User)
.select_from(sel)
.filter(sa.or_(Order.id == None, Address.id == 1))
)
eq_({User(id=7), User(id=8), User(id=10)}, set(q.all()))
class CaseSensitiveTest(fixtures.MappedTest):
@classmethod
def define_tables(cls, metadata):
Table("Table1", metadata, Column("ID", Integer, primary_key=True))
Table(
"Table2",
metadata,
Column("T1ID", Integer, ForeignKey("Table1.ID"), primary_key=True),
Column("NUM", Integer, primary_key=True),
)
@classmethod
def setup_mappers(cls):
Table2, Table1 = cls.tables.Table2, cls.tables.Table1
class Obj1(cls.Basic):
pass
class Obj2(cls.Basic):
pass
cls.mapper_registry.map_imperatively(Obj1, Table1)
cls.mapper_registry.map_imperatively(Obj2, Table2)
@classmethod
def fixtures(cls):
return dict(
Table1=(("ID",), (1,), (2,), (3,), (4,)),
Table2=(
("NUM", "T1ID"),
(1, 1),
(2, 1),
(3, 1),
(4, 2),
(5, 2),
(6, 3),
),
)
def test_distinct_count(self):
Table2, Obj1, Table1 = (
self.tables.Table2,
self.classes.Obj1,
self.tables.Table1,
)
q = fixture_session().query(Obj1)
assert q.count() == 4
res = q.filter(
sa.and_(Table1.c.ID == Table2.c.T1ID, Table2.c.T1ID == 1)
)
assert res.count() == 3
res = q.filter(
sa.and_(Table1.c.ID == Table2.c.T1ID, Table2.c.T1ID == 1)
).distinct()
eq_(res.count(), 1)