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"""Test against the builders in the op.* module."""
from tests import op_fixture
from alembic import op
from sqlalchemy import Integer, Column, ForeignKey, \
UniqueConstraint, Table, MetaData, String,\
Boolean
from sqlalchemy.sql import table, column, func
def test_rename_table():
context = op_fixture()
op.rename_table('t1', 't2')
context.assert_("ALTER TABLE t1 RENAME TO t2")
def test_rename_table_schema():
context = op_fixture()
op.rename_table('t1', 't2', schema="foo")
context.assert_("ALTER TABLE foo.t1 RENAME TO foo.t2")
def test_add_column():
context = op_fixture()
op.add_column('t1', Column('c1', Integer, nullable=False))
context.assert_("ALTER TABLE t1 ADD COLUMN c1 INTEGER NOT NULL")
def test_add_column_with_default():
context = op_fixture()
op.add_column('t1', Column('c1', Integer, nullable=False, server_default="12"))
context.assert_("ALTER TABLE t1 ADD COLUMN c1 INTEGER DEFAULT '12' NOT NULL")
def test_add_column_fk():
context = op_fixture()
op.add_column('t1', Column('c1', Integer, ForeignKey('c2.id'), nullable=False))
context.assert_(
"ALTER TABLE t1 ADD COLUMN c1 INTEGER NOT NULL",
"ALTER TABLE t1 ADD FOREIGN KEY(c1) REFERENCES c2 (id)"
)
def test_add_column_schema_type():
"""Test that a schema type generates its constraints...."""
context = op_fixture()
op.add_column('t1', Column('c1', Boolean, nullable=False))
context.assert_(
'ALTER TABLE t1 ADD COLUMN c1 BOOLEAN NOT NULL',
'ALTER TABLE t1 ADD CHECK (c1 IN (0, 1))'
)
def test_add_column_schema_type_checks_rule():
"""Test that a schema type doesn't generate a
constraint based on check rule."""
context = op_fixture('postgresql')
op.add_column('t1', Column('c1', Boolean, nullable=False))
context.assert_(
'ALTER TABLE t1 ADD COLUMN c1 BOOLEAN NOT NULL',
)
def test_add_column_fk_self_referential():
context = op_fixture()
op.add_column('t1', Column('c1', Integer, ForeignKey('t1.c2'), nullable=False))
context.assert_(
"ALTER TABLE t1 ADD COLUMN c1 INTEGER NOT NULL",
"ALTER TABLE t1 ADD FOREIGN KEY(c1) REFERENCES t1 (c2)"
)
def test_drop_column():
context = op_fixture()
op.drop_column('t1', 'c1')
context.assert_("ALTER TABLE t1 DROP COLUMN c1")
def test_alter_column_nullable():
context = op_fixture()
op.alter_column("t", "c", nullable=True)
context.assert_(
# TODO: not sure if this is PG only or standard
# SQL
"ALTER TABLE t ALTER COLUMN c DROP NOT NULL"
)
def test_alter_column_not_nullable():
context = op_fixture()
op.alter_column("t", "c", nullable=False)
context.assert_(
# TODO: not sure if this is PG only or standard
# SQL
"ALTER TABLE t ALTER COLUMN c SET NOT NULL"
)
def test_alter_column_rename():
context = op_fixture()
op.alter_column("t", "c", name="x")
context.assert_(
"ALTER TABLE t RENAME c TO x"
)
def test_alter_column_type():
context = op_fixture()
op.alter_column("t", "c", type_=String(50))
context.assert_(
'ALTER TABLE t ALTER COLUMN c TYPE VARCHAR(50)'
)
def test_alter_column_set_default():
context = op_fixture()
op.alter_column("t", "c", server_default="q")
context.assert_(
"ALTER TABLE t ALTER COLUMN c SET DEFAULT 'q'"
)
def test_alter_column_set_compiled_default():
context = op_fixture()
op.alter_column("t", "c", server_default=func.utc_thing(func.current_timestamp()))
context.assert_(
"ALTER TABLE t ALTER COLUMN c SET DEFAULT utc_thing(CURRENT_TIMESTAMP)"
)
def test_alter_column_drop_default():
context = op_fixture()
op.alter_column("t", "c", server_default=None)
context.assert_(
'ALTER TABLE t ALTER COLUMN c DROP DEFAULT'
)
def test_alter_column_schema_type_unnamed():
context = op_fixture('mssql')
op.alter_column("t", "c", type_=Boolean())
context.assert_(
'ALTER TABLE t ALTER COLUMN c BIT',
'ALTER TABLE t ADD CHECK (c IN (0, 1))'
)
def test_alter_column_schema_type_named():
context = op_fixture('mssql')
op.alter_column("t", "c", type_=Boolean(name="xyz"))
context.assert_(
'ALTER TABLE t ALTER COLUMN c BIT',
'ALTER TABLE t ADD CONSTRAINT xyz CHECK (c IN (0, 1))'
)
def test_alter_column_schema_type_existing_type():
context = op_fixture('mssql')
op.alter_column("t", "c", type_=String(10), existing_type=Boolean(name="xyz"))
context.assert_(
'ALTER TABLE t DROP CONSTRAINT xyz',
'ALTER TABLE t ALTER COLUMN c VARCHAR(10)'
)
def test_add_foreign_key():
context = op_fixture()
op.create_foreign_key('fk_test', 't1', 't2',
['foo', 'bar'], ['bat', 'hoho'])
context.assert_(
"ALTER TABLE t1 ADD CONSTRAINT fk_test FOREIGN KEY(foo, bar) "
"REFERENCES t2 (bat, hoho)"
)
def test_add_check_constraint():
context = op_fixture()
op.create_check_constraint(
"ck_user_name_len",
"user_table",
func.len(column('name')) > 5
)
context.assert_(
"ALTER TABLE user_table ADD CONSTRAINT ck_user_name_len "
"CHECK (len(name) > 5)"
)
def test_add_unique_constraint():
context = op_fixture()
op.create_unique_constraint('uk_test', 't1', ['foo', 'bar'])
context.assert_(
"ALTER TABLE t1 ADD CONSTRAINT uk_test UNIQUE (foo, bar)"
)
def test_drop_constraint():
context = op_fixture()
op.drop_constraint('foo_bar_bat', 't1')
context.assert_(
"ALTER TABLE t1 DROP CONSTRAINT foo_bar_bat"
)
def test_create_index():
context = op_fixture()
op.create_index('ik_test', 't1', ['foo', 'bar'])
context.assert_(
"CREATE INDEX ik_test ON t1 (foo, bar)"
)
def test_drop_index():
context = op_fixture()
op.drop_index('ik_test')
context.assert_(
"DROP INDEX ik_test"
)
def test_drop_table():
context = op_fixture()
op.drop_table('tb_test')
context.assert_(
"DROP TABLE tb_test"
)
def test_create_table_selfref():
context = op_fixture()
op.create_table(
"some_table",
Column('id', Integer, primary_key=True),
Column('st_id', Integer, ForeignKey('some_table.id'))
)
context.assert_(
"CREATE TABLE some_table ("
"id INTEGER NOT NULL, "
"st_id INTEGER, "
"PRIMARY KEY (id), "
"FOREIGN KEY(st_id) REFERENCES some_table (id))"
)
def test_create_table_fk_and_schema():
context = op_fixture()
op.create_table(
"some_table",
Column('id', Integer, primary_key=True),
Column('foo_id', Integer, ForeignKey('foo.id')),
schema='schema'
)
context.assert_(
"CREATE TABLE schema.some_table ("
"id INTEGER NOT NULL, "
"foo_id INTEGER, "
"PRIMARY KEY (id), "
"FOREIGN KEY(foo_id) REFERENCES foo (id))"
)
def test_create_table_two_fk():
context = op_fixture()
op.create_table(
"some_table",
Column('id', Integer, primary_key=True),
Column('foo_id', Integer, ForeignKey('foo.id')),
Column('foo_bar', Integer, ForeignKey('foo.bar')),
)
context.assert_(
"CREATE TABLE some_table ("
"id INTEGER NOT NULL, "
"foo_id INTEGER, "
"foo_bar INTEGER, "
"PRIMARY KEY (id), "
"FOREIGN KEY(foo_id) REFERENCES foo (id), "
"FOREIGN KEY(foo_bar) REFERENCES foo (bar))"
)
def test_inline_literal():
context = op_fixture()
from sqlalchemy.sql import table, column
from sqlalchemy import String, Integer
account = table('account',
column('name', String),
column('id', Integer)
)
op.execute(
account.update().\
where(account.c.name==op.inline_literal('account 1')).\
values({'name':op.inline_literal('account 2')})
)
op.execute(
account.update().\
where(account.c.id==op.inline_literal(1)).\
values({'id':op.inline_literal(2)})
)
context.assert_(
"UPDATE account SET name='account 2' WHERE account.name = 'account 1'",
"UPDATE account SET id=2 WHERE account.id = 1"
)
|
