mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-06-01 21:38:55 -04:00
Mike Bayer
065fcbd9d2
relationship(), to eliminate confusion over the relational algebra term. relation() however will remain available in equal capacity for the foreseeable future. [ticket:1740]
304 lines
10 KiB
Python
304 lines
10 KiB
Python
from sqlalchemy.test.testing import eq_
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import sqlalchemy as sa
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from sqlalchemy.test import testing
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from sqlalchemy import Integer, String, ForeignKey, MetaData, func
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from sqlalchemy.test.schema import Table
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from sqlalchemy.test.schema import Column
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from sqlalchemy.orm import mapper, relationship, create_session
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from sqlalchemy.test.testing import eq_
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from test.orm import _base, _fixtures
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class GenerativeQueryTest(_base.MappedTest):
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run_inserts = 'once'
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run_deletes = None
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@classmethod
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def define_tables(cls, metadata):
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Table('foo', metadata,
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Column('id', Integer, sa.Sequence('foo_id_seq'), primary_key=True),
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Column('bar', Integer),
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Column('range', Integer))
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@classmethod
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def fixtures(cls):
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rows = tuple([(i, i % 10) for i in range(100)])
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foo_data = (('bar', 'range'),) + rows
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return dict(foo=foo_data)
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@classmethod
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@testing.resolve_artifact_names
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def setup_mappers(cls):
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class Foo(_base.BasicEntity):
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pass
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mapper(Foo, foo)
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@testing.resolve_artifact_names
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def test_selectby(self):
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res = create_session().query(Foo).filter_by(range=5)
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assert res.order_by(Foo.bar)[0].bar == 5
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assert res.order_by(sa.desc(Foo.bar))[0].bar == 95
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@testing.fails_on('maxdb', 'FIXME: unknown')
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@testing.resolve_artifact_names
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def test_slice(self):
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sess = create_session()
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query = sess.query(Foo).order_by(Foo.id)
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orig = query.all()
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assert query[1] == orig[1]
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assert list(query[10:20]) == orig[10:20]
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assert list(query[10:]) == orig[10:]
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assert list(query[:10]) == orig[:10]
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assert list(query[:10]) == orig[:10]
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assert list(query[5:5]) == orig[5:5]
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assert list(query[10:40:3]) == orig[10:40:3]
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assert list(query[-5:]) == orig[-5:]
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assert list(query[-2:-5]) == orig[-2:-5]
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assert list(query[-5:-2]) == orig[-5:-2]
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assert list(query[:-2]) == orig[:-2]
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assert query[10:20][5] == orig[10:20][5]
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@testing.uses_deprecated('Call to deprecated function apply_max')
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@testing.resolve_artifact_names
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def test_aggregate(self):
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sess = create_session()
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query = sess.query(Foo)
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assert query.count() == 100
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assert sess.query(func.min(foo.c.bar)).filter(foo.c.bar<30).one() == (0,)
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assert sess.query(func.max(foo.c.bar)).filter(foo.c.bar<30).one() == (29,)
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# Py3K
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#assert query.filter(foo.c.bar<30).values(sa.func.max(foo.c.bar)).__next__()[0] == 29
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#assert query.filter(foo.c.bar<30).values(sa.func.max(foo.c.bar)).__next__()[0] == 29
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# Py2K
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assert query.filter(foo.c.bar<30).values(sa.func.max(foo.c.bar)).next()[0] == 29
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assert query.filter(foo.c.bar<30).values(sa.func.max(foo.c.bar)).next()[0] == 29
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# end Py2K
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@testing.resolve_artifact_names
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def test_aggregate_1(self):
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if (testing.against('mysql+mysqldb') and
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testing.db.dialect.dbapi.version_info[:4] == (1, 2, 1, 'gamma')):
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return
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query = create_session().query(func.sum(foo.c.bar))
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assert query.filter(foo.c.bar<30).one() == (435,)
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@testing.fails_on('firebird', 'FIXME: unknown')
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@testing.fails_on('mssql', 'AVG produces an average as the original column type on mssql.')
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@testing.resolve_artifact_names
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def test_aggregate_2(self):
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query = create_session().query(func.avg(foo.c.bar))
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avg = query.filter(foo.c.bar < 30).one()[0]
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eq_(float(round(avg, 1)), 14.5)
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@testing.fails_on('mssql', 'AVG produces an average as the original column type on mssql.')
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@testing.resolve_artifact_names
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def test_aggregate_3(self):
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query = create_session().query(Foo)
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# Py3K
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#avg_f = query.filter(foo.c.bar<30).values(sa.func.avg(foo.c.bar)).__next__()[0]
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# Py2K
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avg_f = query.filter(foo.c.bar<30).values(sa.func.avg(foo.c.bar)).next()[0]
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# end Py2K
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assert float(round(avg_f, 1)) == 14.5
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# Py3K
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#avg_o = query.filter(foo.c.bar<30).values(sa.func.avg(foo.c.bar)).__next__()[0]
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# Py2K
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avg_o = query.filter(foo.c.bar<30).values(sa.func.avg(foo.c.bar)).next()[0]
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# end Py2K
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assert float(round(avg_o, 1)) == 14.5
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@testing.resolve_artifact_names
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def test_filter(self):
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query = create_session().query(Foo)
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assert query.count() == 100
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assert query.filter(Foo.bar < 30).count() == 30
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res2 = query.filter(Foo.bar < 30).filter(Foo.bar > 10)
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assert res2.count() == 19
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@testing.resolve_artifact_names
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def test_options(self):
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query = create_session().query(Foo)
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class ext1(sa.orm.MapperExtension):
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def populate_instance(self, mapper, selectcontext, row, instance, **flags):
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instance.TEST = "hello world"
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return sa.orm.EXT_CONTINUE
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assert query.options(sa.orm.extension(ext1()))[0].TEST == "hello world"
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@testing.resolve_artifact_names
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def test_order_by(self):
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query = create_session().query(Foo)
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assert query.order_by(Foo.bar)[0].bar == 0
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assert query.order_by(sa.desc(Foo.bar))[0].bar == 99
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@testing.resolve_artifact_names
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def test_offset(self):
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query = create_session().query(Foo)
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assert list(query.order_by(Foo.bar).offset(10))[0].bar == 10
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@testing.resolve_artifact_names
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def test_offset(self):
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query = create_session().query(Foo)
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assert len(list(query.limit(10))) == 10
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class GenerativeTest2(_base.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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Table('Table1', metadata,
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Column('id', Integer, primary_key=True))
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Table('Table2', metadata,
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Column('t1id', Integer, ForeignKey("Table1.id"),
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primary_key=True),
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Column('num', Integer, primary_key=True))
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@classmethod
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@testing.resolve_artifact_names
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def setup_mappers(cls):
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class Obj1(_base.BasicEntity):
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pass
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class Obj2(_base.BasicEntity):
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pass
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mapper(Obj1, Table1)
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mapper(Obj2, Table2)
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@classmethod
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def fixtures(cls):
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return dict(
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Table1=(('id',),
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(1,),
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(2,),
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(3,),
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(4,)),
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Table2=(('num', 't1id'),
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(1, 1),
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(2, 1),
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(3, 1),
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(4, 2),
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(5, 2),
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(6, 3)))
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@testing.resolve_artifact_names
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def test_distinct_count(self):
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query = create_session().query(Obj1)
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eq_(query.count(), 4)
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res = query.filter(sa.and_(Table1.c.id == Table2.c.t1id,
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Table2.c.t1id == 1))
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eq_(res.count(), 3)
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res = query.filter(sa.and_(Table1.c.id == Table2.c.t1id,
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Table2.c.t1id == 1)).distinct()
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eq_(res.count(), 1)
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class RelationshipsTest(_fixtures.FixtureTest):
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run_setup_mappers = 'once'
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run_inserts = 'once'
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run_deletes = None
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@classmethod
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@testing.resolve_artifact_names
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def setup_mappers(cls):
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mapper(User, users, properties={
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'orders':relationship(mapper(Order, orders, properties={
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'addresses':relationship(mapper(Address, addresses))}))})
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@testing.resolve_artifact_names
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def test_join(self):
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"""Query.join"""
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session = create_session()
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q = (session.query(User).join('orders', 'addresses').
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filter(Address.id == 1))
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eq_([User(id=7)], q.all())
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@testing.resolve_artifact_names
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def test_outer_join(self):
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"""Query.outerjoin"""
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session = create_session()
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q = (session.query(User).outerjoin('orders', 'addresses').
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filter(sa.or_(Order.id == None, Address.id == 1)))
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eq_(set([User(id=7), User(id=8), User(id=10)]),
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set(q.all()))
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@testing.resolve_artifact_names
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def test_outer_join_count(self):
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"""test the join and outerjoin functions on Query"""
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session = create_session()
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q = (session.query(User).outerjoin('orders', 'addresses').
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filter(sa.or_(Order.id == None, Address.id == 1)))
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eq_(q.count(), 4)
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@testing.resolve_artifact_names
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def test_from(self):
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session = create_session()
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sel = users.outerjoin(orders).outerjoin(
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addresses, orders.c.address_id == addresses.c.id)
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q = (session.query(User).select_from(sel).
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filter(sa.or_(Order.id == None, Address.id == 1)))
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eq_(set([User(id=7), User(id=8), User(id=10)]),
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set(q.all()))
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class CaseSensitiveTest(_base.MappedTest):
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@classmethod
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def define_tables(cls, metadata):
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Table('Table1', metadata,
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Column('ID', Integer, primary_key=True))
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Table('Table2', metadata,
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Column('T1ID', Integer, ForeignKey("Table1.ID"),
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primary_key=True),
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Column('NUM', Integer, primary_key=True))
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@classmethod
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@testing.resolve_artifact_names
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def setup_mappers(cls):
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class Obj1(_base.BasicEntity):
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pass
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class Obj2(_base.BasicEntity):
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pass
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mapper(Obj1, Table1)
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mapper(Obj2, Table2)
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@classmethod
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def fixtures(cls):
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return dict(
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Table1=(('ID',),
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(1,),
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(2,),
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(3,),
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(4,)),
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Table2=(('NUM', 'T1ID'),
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(1, 1),
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(2, 1),
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(3, 1),
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(4, 2),
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(5, 2),
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(6, 3)))
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@testing.resolve_artifact_names
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def test_distinct_count(self):
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q = create_session(bind=testing.db).query(Obj1)
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assert q.count() == 4
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res = q.filter(sa.and_(Table1.c.ID==Table2.c.T1ID,Table2.c.T1ID==1))
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assert res.count() == 3
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res = q.filter(sa.and_(Table1.c.ID==Table2.c.T1ID,Table2.c.T1ID==1)).distinct()
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eq_(res.count(), 1)
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