university-final-iot-backend/env/lib/python3.6/site-packages/sqlalchemy/testing/suite/test_select.py

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2018-04-26 12:51:37 +00:00
from .. import fixtures, config
from ..assertions import eq_
from sqlalchemy import util
from sqlalchemy import Integer, String, select, func, bindparam, union, tuple_
from sqlalchemy import testing
from sqlalchemy import literal_column
from ..schema import Table, Column
class CollateTest(fixtures.TablesTest):
__backend__ = True
@classmethod
def define_tables(cls, metadata):
Table("some_table", metadata,
Column('id', Integer, primary_key=True),
Column('data', String(100))
)
@classmethod
def insert_data(cls):
config.db.execute(
cls.tables.some_table.insert(),
[
{"id": 1, "data": "collate data1"},
{"id": 2, "data": "collate data2"},
]
)
def _assert_result(self, select, result):
eq_(
config.db.execute(select).fetchall(),
result
)
@testing.requires.order_by_collation
def test_collate_order_by(self):
collation = testing.requires.get_order_by_collation(testing.config)
self._assert_result(
select([self.tables.some_table]).
order_by(self.tables.some_table.c.data.collate(collation).asc()),
[
(1, "collate data1"),
(2, "collate data2"),
]
)
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, )]
)
@testing.requires.group_by_complex_expression
def test_group_by_composed(self):
table = self.tables.some_table
expr = (table.c.x + table.c.y).label('lx')
stmt = select([func.count(table.c.id), expr]).group_by(expr).order_by(expr)
self._assert_result(
stmt,
[(1, 3), (1, 5), (1, 7)]
)
class LimitOffsetTest(fixtures.TablesTest):
__backend__ = True
@classmethod
def define_tables(cls, metadata):
Table("some_table", metadata,
Column('id', Integer, primary_key=True),
Column('x', Integer),
Column('y', Integer))
@classmethod
def insert_data(cls):
config.db.execute(
cls.tables.some_table.insert(),
[
{"id": 1, "x": 1, "y": 2},
{"id": 2, "x": 2, "y": 3},
{"id": 3, "x": 3, "y": 4},
{"id": 4, "x": 4, "y": 5},
]
)
def _assert_result(self, select, result, params=()):
eq_(
config.db.execute(select, params).fetchall(),
result
)
def test_simple_limit(self):
table = self.tables.some_table
self._assert_result(
select([table]).order_by(table.c.id).limit(2),
[(1, 1, 2), (2, 2, 3)]
)
@testing.requires.offset
def test_simple_offset(self):
table = self.tables.some_table
self._assert_result(
select([table]).order_by(table.c.id).offset(2),
[(3, 3, 4), (4, 4, 5)]
)
@testing.requires.offset
def test_simple_limit_offset(self):
table = self.tables.some_table
self._assert_result(
select([table]).order_by(table.c.id).limit(2).offset(1),
[(2, 2, 3), (3, 3, 4)]
)
@testing.requires.offset
def test_limit_offset_nobinds(self):
"""test that 'literal binds' mode works - no bound params."""
table = self.tables.some_table
stmt = select([table]).order_by(table.c.id).limit(2).offset(1)
sql = stmt.compile(
dialect=config.db.dialect,
compile_kwargs={"literal_binds": True})
sql = str(sql)
self._assert_result(
sql,
[(2, 2, 3), (3, 3, 4)]
)
@testing.requires.bound_limit_offset
def test_bound_limit(self):
table = self.tables.some_table
self._assert_result(
select([table]).order_by(table.c.id).limit(bindparam('l')),
[(1, 1, 2), (2, 2, 3)],
params={"l": 2}
)
@testing.requires.bound_limit_offset
def test_bound_offset(self):
table = self.tables.some_table
self._assert_result(
select([table]).order_by(table.c.id).offset(bindparam('o')),
[(3, 3, 4), (4, 4, 5)],
params={"o": 2}
)
@testing.requires.bound_limit_offset
def test_bound_limit_offset(self):
table = self.tables.some_table
self._assert_result(
select([table]).order_by(table.c.id).
limit(bindparam("l")).offset(bindparam("o")),
[(2, 2, 3), (3, 3, 4)],
params={"l": 2, "o": 1}
)
class CompoundSelectTest(fixtures.TablesTest):
__backend__ = True
@classmethod
def define_tables(cls, metadata):
Table("some_table", metadata,
Column('id', Integer, primary_key=True),
Column('x', Integer),
Column('y', Integer))
@classmethod
def insert_data(cls):
config.db.execute(
cls.tables.some_table.insert(),
[
{"id": 1, "x": 1, "y": 2},
{"id": 2, "x": 2, "y": 3},
{"id": 3, "x": 3, "y": 4},
{"id": 4, "x": 4, "y": 5},
]
)
def _assert_result(self, select, result, params=()):
eq_(
config.db.execute(select, params).fetchall(),
result
)
def test_plain_union(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2)
s2 = select([table]).where(table.c.id == 3)
u1 = union(s1, s2)
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
def test_select_from_plain_union(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2)
s2 = select([table]).where(table.c.id == 3)
u1 = union(s1, s2).alias().select()
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
@testing.requires.order_by_col_from_union
@testing.requires.parens_in_union_contained_select_w_limit_offset
def test_limit_offset_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
limit(1).order_by(table.c.id)
s2 = select([table]).where(table.c.id == 3).\
limit(1).order_by(table.c.id)
u1 = union(s1, s2).limit(2)
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
@testing.requires.parens_in_union_contained_select_wo_limit_offset
def test_order_by_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
order_by(table.c.id)
s2 = select([table]).where(table.c.id == 3).\
order_by(table.c.id)
u1 = union(s1, s2).limit(2)
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
def test_distinct_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
distinct()
s2 = select([table]).where(table.c.id == 3).\
distinct()
u1 = union(s1, s2).limit(2)
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
@testing.requires.parens_in_union_contained_select_w_limit_offset
def test_limit_offset_in_unions_from_alias(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
limit(1).order_by(table.c.id)
s2 = select([table]).where(table.c.id == 3).\
limit(1).order_by(table.c.id)
# this necessarily has double parens
u1 = union(s1, s2).alias()
self._assert_result(
u1.select().limit(2).order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
def test_limit_offset_aliased_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
limit(1).order_by(table.c.id).alias().select()
s2 = select([table]).where(table.c.id == 3).\
limit(1).order_by(table.c.id).alias().select()
u1 = union(s1, s2).limit(2)
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
class ExpandingBoundInTest(fixtures.TablesTest):
__backend__ = True
@classmethod
def define_tables(cls, metadata):
Table("some_table", metadata,
Column('id', Integer, primary_key=True),
Column('x', Integer),
Column('y', Integer))
@classmethod
def insert_data(cls):
config.db.execute(
cls.tables.some_table.insert(),
[
{"id": 1, "x": 1, "y": 2},
{"id": 2, "x": 2, "y": 3},
{"id": 3, "x": 3, "y": 4},
{"id": 4, "x": 4, "y": 5},
]
)
def _assert_result(self, select, result, params=()):
eq_(
config.db.execute(select, params).fetchall(),
result
)
def test_bound_in_scalar(self):
table = self.tables.some_table
stmt = select([table.c.id]).where(
table.c.x.in_(bindparam('q', expanding=True))).order_by(table.c.id)
self._assert_result(
stmt,
[(2, ), (3, ), (4, )],
params={"q": [2, 3, 4]},
)
@testing.requires.tuple_in
def test_bound_in_two_tuple(self):
table = self.tables.some_table
stmt = select([table.c.id]).where(
tuple_(table.c.x, table.c.y).in_(bindparam('q', expanding=True))).order_by(table.c.id)
self._assert_result(
stmt,
[(2, ), (3, ), (4, )],
params={"q": [(2, 3), (3, 4), (4, 5)]},
)
class LikeFunctionsTest(fixtures.TablesTest):
__backend__ = True
run_inserts = 'once'
run_deletes = None
@classmethod
def define_tables(cls, metadata):
Table("some_table", metadata,
Column('id', Integer, primary_key=True),
Column('data', String(50)))
@classmethod
def insert_data(cls):
config.db.execute(
cls.tables.some_table.insert(),
[
{"id": 1, "data": "abcdefg"},
{"id": 2, "data": "ab/cdefg"},
{"id": 3, "data": "ab%cdefg"},
{"id": 4, "data": "ab_cdefg"},
{"id": 5, "data": "abcde/fg"},
{"id": 6, "data": "abcde%fg"},
{"id": 7, "data": "ab#cdefg"},
{"id": 8, "data": "ab9cdefg"},
{"id": 9, "data": "abcde#fg"},
{"id": 10, "data": "abcd9fg"},
]
)
def _test(self, expr, expected):
some_table = self.tables.some_table
with config.db.connect() as conn:
rows = {
value for value, in
conn.execute(select([some_table.c.id]).where(expr))
}
eq_(rows, expected)
def test_startswith_unescaped(self):
col = self.tables.some_table.c.data
self._test(col.startswith("ab%c"), {1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
def test_startswith_autoescape(self):
col = self.tables.some_table.c.data
self._test(col.startswith("ab%c", autoescape=True), {3})
def test_startswith_sqlexpr(self):
col = self.tables.some_table.c.data
self._test(
col.startswith(literal_column("'ab%c'")),
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
def test_startswith_escape(self):
col = self.tables.some_table.c.data
self._test(col.startswith("ab##c", escape="#"), {7})
def test_startswith_autoescape_escape(self):
col = self.tables.some_table.c.data
self._test(col.startswith("ab%c", autoescape=True, escape="#"), {3})
self._test(col.startswith("ab#c", autoescape=True, escape="#"), {7})
def test_endswith_unescaped(self):
col = self.tables.some_table.c.data
self._test(col.endswith("e%fg"), {1, 2, 3, 4, 5, 6, 7, 8, 9})
def test_endswith_sqlexpr(self):
col = self.tables.some_table.c.data
self._test(col.endswith(literal_column("'e%fg'")),
{1, 2, 3, 4, 5, 6, 7, 8, 9})
def test_endswith_autoescape(self):
col = self.tables.some_table.c.data
self._test(col.endswith("e%fg", autoescape=True), {6})
def test_endswith_escape(self):
col = self.tables.some_table.c.data
self._test(col.endswith("e##fg", escape="#"), {9})
def test_endswith_autoescape_escape(self):
col = self.tables.some_table.c.data
self._test(col.endswith("e%fg", autoescape=True, escape="#"), {6})
self._test(col.endswith("e#fg", autoescape=True, escape="#"), {9})
def test_contains_unescaped(self):
col = self.tables.some_table.c.data
self._test(col.contains("b%cde"), {1, 2, 3, 4, 5, 6, 7, 8, 9})
def test_contains_autoescape(self):
col = self.tables.some_table.c.data
self._test(col.contains("b%cde", autoescape=True), {3})
def test_contains_escape(self):
col = self.tables.some_table.c.data
self._test(col.contains("b##cde", escape="#"), {7})
def test_contains_autoescape_escape(self):
col = self.tables.some_table.c.data
self._test(col.contains("b%cd", autoescape=True, escape="#"), {3})
self._test(col.contains("b#cd", autoescape=True, escape="#"), {7})