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from tests import op_fixture, assert_raises_message
from alembic import op
from sqlalchemy import Integer, Column, Boolean
from sqlalchemy.sql import column
def test_add_column():
context = op_fixture('sqlite')
op.add_column('t1', Column('c1', Integer))
context.assert_(
'ALTER TABLE t1 ADD COLUMN c1 INTEGER'
)
def test_add_column_implicit_constraint():
context = op_fixture('sqlite')
op.add_column('t1', Column('c1', Boolean))
context.assert_(
'ALTER TABLE t1 ADD COLUMN c1 BOOLEAN'
)
def test_add_explicit_constraint():
context = op_fixture('sqlite')
assert_raises_message(
NotImplementedError,
"No support for ALTER of constraints in SQLite dialect",
op.create_check_constraint,
"foo",
"sometable",
column('name') > 5
)
def test_drop_explicit_constraint():
context = op_fixture('sqlite')
assert_raises_message(
NotImplementedError,
"No support for ALTER of constraints in SQLite dialect",
op.drop_constraint,
"foo",
"sometable",
)
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