154 lines
5.2 KiB
Python
154 lines
5.2 KiB
Python
# testing/suite/test_deprecations.py
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# Copyright (C) 2005-2024 the SQLAlchemy authors and contributors
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# <see AUTHORS file>
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#
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# This module is part of SQLAlchemy and is released under
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# the MIT License: https://www.opensource.org/licenses/mit-license.php
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# mypy: ignore-errors
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from .. import fixtures
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from ..assertions import eq_
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from ..schema import Column
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from ..schema import Table
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from ... import Integer
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from ... import select
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from ... import testing
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from ... import union
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class DeprecatedCompoundSelectTest(fixtures.TablesTest):
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__backend__ = True
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@classmethod
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def define_tables(cls, metadata):
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Table(
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"some_table",
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metadata,
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Column("id", Integer, primary_key=True),
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Column("x", Integer),
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Column("y", Integer),
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)
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@classmethod
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def insert_data(cls, connection):
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connection.execute(
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cls.tables.some_table.insert(),
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[
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{"id": 1, "x": 1, "y": 2},
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{"id": 2, "x": 2, "y": 3},
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{"id": 3, "x": 3, "y": 4},
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{"id": 4, "x": 4, "y": 5},
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],
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)
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def _assert_result(self, conn, select, result, params=()):
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eq_(conn.execute(select, params).fetchall(), result)
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def test_plain_union(self, connection):
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table = self.tables.some_table
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s1 = select(table).where(table.c.id == 2)
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s2 = select(table).where(table.c.id == 3)
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u1 = union(s1, s2)
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with testing.expect_deprecated(
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"The SelectBase.c and SelectBase.columns "
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"attributes are deprecated"
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):
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self._assert_result(
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connection, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)]
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)
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# note we've had to remove one use case entirely, which is this
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# one. the Select gets its FROMS from the WHERE clause and the
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# columns clause, but not the ORDER BY, which means the old ".c" system
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# allowed you to "order_by(s.c.foo)" to get an unnamed column in the
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# ORDER BY without adding the SELECT into the FROM and breaking the
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# query. Users will have to adjust for this use case if they were doing
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# it before.
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def _dont_test_select_from_plain_union(self, connection):
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table = self.tables.some_table
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s1 = select(table).where(table.c.id == 2)
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s2 = select(table).where(table.c.id == 3)
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u1 = union(s1, s2).alias().select()
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with testing.expect_deprecated(
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"The SelectBase.c and SelectBase.columns "
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"attributes are deprecated"
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):
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self._assert_result(
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connection, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)]
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)
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@testing.requires.order_by_col_from_union
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@testing.requires.parens_in_union_contained_select_w_limit_offset
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def test_limit_offset_selectable_in_unions(self, connection):
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table = self.tables.some_table
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s1 = select(table).where(table.c.id == 2).limit(1).order_by(table.c.id)
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s2 = select(table).where(table.c.id == 3).limit(1).order_by(table.c.id)
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u1 = union(s1, s2).limit(2)
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with testing.expect_deprecated(
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"The SelectBase.c and SelectBase.columns "
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"attributes are deprecated"
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):
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self._assert_result(
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connection, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)]
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)
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@testing.requires.parens_in_union_contained_select_wo_limit_offset
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def test_order_by_selectable_in_unions(self, connection):
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table = self.tables.some_table
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s1 = select(table).where(table.c.id == 2).order_by(table.c.id)
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s2 = select(table).where(table.c.id == 3).order_by(table.c.id)
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u1 = union(s1, s2).limit(2)
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with testing.expect_deprecated(
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"The SelectBase.c and SelectBase.columns "
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"attributes are deprecated"
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):
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self._assert_result(
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connection, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)]
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)
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def test_distinct_selectable_in_unions(self, connection):
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table = self.tables.some_table
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s1 = select(table).where(table.c.id == 2).distinct()
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s2 = select(table).where(table.c.id == 3).distinct()
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u1 = union(s1, s2).limit(2)
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with testing.expect_deprecated(
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"The SelectBase.c and SelectBase.columns "
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"attributes are deprecated"
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):
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self._assert_result(
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connection, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)]
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)
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def test_limit_offset_aliased_selectable_in_unions(self, connection):
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table = self.tables.some_table
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s1 = (
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select(table)
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.where(table.c.id == 2)
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.limit(1)
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.order_by(table.c.id)
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.alias()
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.select()
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)
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s2 = (
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select(table)
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.where(table.c.id == 3)
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.limit(1)
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.order_by(table.c.id)
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.alias()
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.select()
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)
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u1 = union(s1, s2).limit(2)
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with testing.expect_deprecated(
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"The SelectBase.c and SelectBase.columns "
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"attributes are deprecated"
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):
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self._assert_result(
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connection, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)]
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)
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