SickGear/lib/sqlalchemy/testing/suite/test_select.py

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2014-05-05 04:05:43 +00:00
from .. import fixtures, config
from ..assertions import eq_
from sqlalchemy import util
from sqlalchemy import Integer, String, select, func
from ..schema import Table, Column
class OrderByLabelTest(fixtures.TablesTest):
"""Test the dialect sends appropriate ORDER BY expressions when
labels are used.
This essentially exercises the "supports_simple_order_by_label"
setting.
"""
__backend__ = True
@classmethod
def define_tables(cls, metadata):
Table("some_table", metadata,
Column('id', Integer, primary_key=True),
Column('x', Integer),
Column('y', Integer),
Column('q', String(50)),
Column('p', String(50))
)
@classmethod
def insert_data(cls):
config.db.execute(
cls.tables.some_table.insert(),
[
{"id": 1, "x": 1, "y": 2, "q": "q1", "p": "p3"},
{"id": 2, "x": 2, "y": 3, "q": "q2", "p": "p2"},
{"id": 3, "x": 3, "y": 4, "q": "q3", "p": "p1"},
]
)
def _assert_result(self, select, result):
eq_(
config.db.execute(select).fetchall(),
result
)
def test_plain(self):
table = self.tables.some_table
lx = table.c.x.label('lx')
self._assert_result(
select([lx]).order_by(lx),
[(1, ), (2, ), (3, )]
)
def test_composed_int(self):
table = self.tables.some_table
lx = (table.c.x + table.c.y).label('lx')
self._assert_result(
select([lx]).order_by(lx),
[(3, ), (5, ), (7, )]
)
def test_composed_multiple(self):
table = self.tables.some_table
lx = (table.c.x + table.c.y).label('lx')
ly = (func.lower(table.c.q) + table.c.p).label('ly')
self._assert_result(
select([lx, ly]).order_by(lx, ly.desc()),
[(3, util.u('q1p3')), (5, util.u('q2p2')), (7, util.u('q3p1'))]
)
def test_plain_desc(self):
table = self.tables.some_table
lx = table.c.x.label('lx')
self._assert_result(
select([lx]).order_by(lx.desc()),
[(3, ), (2, ), (1, )]
)
def test_composed_int_desc(self):
table = self.tables.some_table
lx = (table.c.x + table.c.y).label('lx')
self._assert_result(
select([lx]).order_by(lx.desc()),
[(7, ), (5, ), (3, )]
)