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from sqlalchemy import BigInteger from sqlalchemy import Column from sqlalchemy import Integer from sqlalchemy import MetaData from sqlalchemy import Table from sqlalchemy.testing import in_ from ._autogen_fixtures import AutogenFixtureTest from ... import testing from ...testing import config from ...testing import eq_ from ...testing import is_ from ...testing import TestBase class AlterColumnTest(AutogenFixtureTest, TestBase): __backend__ = True @testing.combinations((True,), (False,)) @config.requirements.comments def test_all_existings_filled(self, pk): m1 = MetaData() m2 = MetaData() Table("a", m1, Column("x", Integer, primary_key=pk)) Table("a", m2, Column("x", Integer, comment="x", primary_key=pk)) alter_col = self._assert_alter_col(m1, m2, pk) eq_(alter_col.modify_comment, "x") @testing.combinations((True,), (False,)) @config.requirements.comments def test_all_existings_filled_in_notnull(self, pk): m1 = MetaData() m2 = MetaData() Table("a", m1, Column("x", Integer, nullable=False, primary_key=pk)) Table( "a", m2, Column("x", Integer, nullable=False, comment="x", primary_key=pk), ) self._assert_alter_col(m1, m2, pk, nullable=False) @testing.combinations((True,), (False,)) @config.requirements.comments def test_all_existings_filled_in_comment(self, pk): m1 = MetaData() m2 = MetaData() Table("a", m1, Column("x", Integer, comment="old", primary_key=pk)) Table("a", m2, Column("x", Integer, comment="new", primary_key=pk)) alter_col = self._assert_alter_col(m1, m2, pk) eq_(alter_col.existing_comment, "old") @testing.combinations((True,), (False,)) @config.requirements.comments def test_all_existings_filled_in_server_default(self, pk): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("x", Integer, server_default="5", primary_key=pk) ) Table( "a", m2, Column( "x", Integer, server_default="5", comment="new", primary_key=pk ), ) alter_col = self._assert_alter_col(m1, m2, pk) in_("5", alter_col.existing_server_default.arg.text) def _assert_alter_col(self, m1, m2, pk, nullable=None): ops = self._fixture(m1, m2, return_ops=True) modify_table = ops.ops[-1] alter_col = modify_table.ops[0] if nullable is None: eq_(alter_col.existing_nullable, not pk) else: eq_(alter_col.existing_nullable, nullable) assert alter_col.existing_type._compare_type_affinity(Integer()) return alter_col class AutoincrementTest(AutogenFixtureTest, TestBase): __backend__ = True __requires__ = ("integer_subtype_comparisons",) def test_alter_column_autoincrement_none(self): m1 = MetaData() m2 = MetaData() Table("a", m1, Column("x", Integer, nullable=False)) Table("a", m2, Column("x", Integer, nullable=True)) ops = self._fixture(m1, m2, return_ops=True) assert "autoincrement" not in ops.ops[0].ops[0].kw def test_alter_column_autoincrement_pk_false(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("x", Integer, primary_key=True, autoincrement=False), ) Table( "a", m2, Column("x", BigInteger, primary_key=True, autoincrement=False), ) ops = self._fixture(m1, m2, return_ops=True) is_(ops.ops[0].ops[0].kw["autoincrement"], False) def test_alter_column_autoincrement_pk_implicit_true(self): m1 = MetaData() m2 = MetaData() Table("a", m1, Column("x", Integer, primary_key=True)) Table("a", m2, Column("x", BigInteger, primary_key=True)) ops = self._fixture(m1, m2, return_ops=True) is_(ops.ops[0].ops[0].kw["autoincrement"], True) def test_alter_column_autoincrement_pk_explicit_true(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("x", Integer, primary_key=True, autoincrement=True) ) Table( "a", m2, Column("x", BigInteger, primary_key=True, autoincrement=True), ) ops = self._fixture(m1, m2, return_ops=True) is_(ops.ops[0].ops[0].kw["autoincrement"], True) def test_alter_column_autoincrement_nonpk_false(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("id", Integer, primary_key=True), Column("x", Integer, autoincrement=False), ) Table( "a", m2, Column("id", Integer, primary_key=True), Column("x", BigInteger, autoincrement=False), ) ops = self._fixture(m1, m2, return_ops=True) is_(ops.ops[0].ops[0].kw["autoincrement"], False) def test_alter_column_autoincrement_nonpk_implicit_false(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("id", Integer, primary_key=True), Column("x", Integer), ) Table( "a", m2, Column("id", Integer, primary_key=True), Column("x", BigInteger), ) ops = self._fixture(m1, m2, return_ops=True) assert "autoincrement" not in ops.ops[0].ops[0].kw def test_alter_column_autoincrement_nonpk_explicit_true(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("id", Integer, primary_key=True, autoincrement=False), Column("x", Integer, autoincrement=True), ) Table( "a", m2, Column("id", Integer, primary_key=True, autoincrement=False), Column("x", BigInteger, autoincrement=True), ) ops = self._fixture(m1, m2, return_ops=True) is_(ops.ops[0].ops[0].kw["autoincrement"], True) def test_alter_column_autoincrement_compositepk_false(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("id", Integer, primary_key=True), Column("x", Integer, primary_key=True, autoincrement=False), ) Table( "a", m2, Column("id", Integer, primary_key=True), Column("x", BigInteger, primary_key=True, autoincrement=False), ) ops = self._fixture(m1, m2, return_ops=True) is_(ops.ops[0].ops[0].kw["autoincrement"], False) def test_alter_column_autoincrement_compositepk_implicit_false(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("id", Integer, primary_key=True), Column("x", Integer, primary_key=True), ) Table( "a", m2, Column("id", Integer, primary_key=True), Column("x", BigInteger, primary_key=True), ) ops = self._fixture(m1, m2, return_ops=True) assert "autoincrement" not in ops.ops[0].ops[0].kw @config.requirements.autoincrement_on_composite_pk def test_alter_column_autoincrement_compositepk_explicit_true(self): m1 = MetaData() m2 = MetaData() Table( "a", m1, Column("id", Integer, primary_key=True, autoincrement=False), Column("x", Integer, primary_key=True, autoincrement=True), # on SQLA 1.0 and earlier, this being present # trips the "add KEY for the primary key" so that the # AUTO_INCREMENT keyword is accepted by MySQL. SQLA 1.1 and # greater the columns are just reorganized. mysql_engine="InnoDB", ) Table( "a", m2, Column("id", Integer, primary_key=True, autoincrement=False), Column("x", BigInteger, primary_key=True, autoincrement=True), ) ops = self._fixture(m1, m2, return_ops=True) is_(ops.ops[0].ops[0].kw["autoincrement"], True)