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from sqlalchemy.testing import eq_
import sqlalchemy as sa
from sqlalchemy import testing
from sqlalchemy import Integer, String, ForeignKey, MetaData, func
from sqlalchemy.testing.schema import Table
from sqlalchemy.testing.schema import Column
from sqlalchemy.orm import mapper, relationship, create_session
from sqlalchemy.testing import eq_
from sqlalchemy.testing import fixtures
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, 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
mapper(Foo, foo)
def test_selectby(self):
Foo = self.classes.Foo
res = create_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 = create_session()
query = sess.query(Foo).order_by(Foo.id)
orig = query.all()
assert query[1] == orig[1]
assert query[-4] == orig[-4]
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 list(query[-5:]) == orig[-5:]
assert list(query[-2:-5]) == orig[-2:-5]
assert list(query[-5:-2]) == orig[-5:-2]
assert list(query[:-2]) == orig[:-2]
assert query[10:20][5] == orig[10:20][5]
@testing.uses_deprecated('Call to deprecated function apply_max')
def test_aggregate(self):
foo, Foo = self.tables.foo, self.classes.Foo
sess = create_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,)
assert next(query.filter(foo.c.bar<30).values(sa.func.max(foo.c.bar)))[0] == 29
assert next(query.filter(foo.c.bar<30).values(sa.func.max(foo.c.bar)))[0] == 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 = create_session().query(func.sum(foo.c.bar))
assert query.filter(foo.c.bar<30).one() == (435,)
@testing.fails_on('firebird', 'FIXME: unknown')
@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 = create_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 = create_session().query(Foo)
avg_f = next(query.filter(foo.c.bar<30).values(sa.func.avg(foo.c.bar)))[0]
assert float(round(avg_f, 1)) == 14.5
avg_o = next(query.filter(foo.c.bar<30).values(sa.func.avg(foo.c.bar)))[0]
assert float(round(avg_o, 1)) == 14.5
def test_filter(self):
Foo = self.classes.Foo
query = create_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 = create_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(self):
Foo = self.classes.Foo
query = create_session().query(Foo)
assert list(query.order_by(Foo.bar).offset(10))[0].bar == 10
def test_offset(self):
Foo = self.classes.Foo
query = create_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
mapper(Obj1, table1)
mapper(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 = create_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)
mapper(User, users, properties={
'orders':relationship(mapper(Order, orders, properties={
'addresses':relationship(mapper(Address, addresses))}))})
def test_join(self):
"""Query.join"""
User, Address = self.classes.User, self.classes.Address
session = create_session()
q = (session.query(User).join('orders', '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 = create_session()
q = (session.query(User).outerjoin('orders', 'addresses').
filter(sa.or_(Order.id == None, Address.id == 1)))
eq_(set([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 = create_session()
q = (session.query(User).outerjoin('orders', '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 = create_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_(set([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
mapper(Obj1, Table1)
mapper(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 = create_session(bind=testing.db).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)
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