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)
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