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from tests import op_fixture, _sqlite_testing_config, eq_, assert_raises_message
from alembic import op
from sqlalchemy import Integer, \
UniqueConstraint, String
from sqlalchemy.sql import table, column
from unittest import TestCase
from sqlalchemy import Table, Column, MetaData
def _table_fixture(dialect, as_sql):
context = op_fixture(dialect, as_sql)
t1 = table("ins_table",
column('id', Integer),
column('v1', String()),
column('v2', String()),
)
return context, t1
def _big_t_table_fixture(dialect, as_sql):
context = op_fixture(dialect, as_sql)
t1 = Table("ins_table", MetaData(),
Column('id', Integer, primary_key=True),
Column('v1', String()),
Column('v2', String()),
)
return context, t1
def _test_bulk_insert(dialect, as_sql):
context, t1 = _table_fixture(dialect, as_sql)
op.bulk_insert(t1, [
{'id':1, 'v1':'row v1', 'v2':'row v5'},
{'id':2, 'v1':'row v2', 'v2':'row v6'},
{'id':3, 'v1':'row v3', 'v2':'row v7'},
{'id':4, 'v1':'row v4', 'v2':'row v8'},
])
return context
def _test_bulk_insert_single(dialect, as_sql):
context, t1 = _table_fixture(dialect, as_sql)
op.bulk_insert(t1, [
{'id':1, 'v1':'row v1', 'v2':'row v5'},
])
return context
def _test_bulk_insert_single_bigt(dialect, as_sql):
context, t1 = _big_t_table_fixture(dialect, as_sql)
op.bulk_insert(t1, [
{'id':1, 'v1':'row v1', 'v2':'row v5'},
])
return context
def test_bulk_insert():
context = _test_bulk_insert('default', False)
context.assert_(
'INSERT INTO ins_table (id, v1, v2) VALUES (:id, :v1, :v2)'
)
def test_bulk_insert_wrong_cols():
context = op_fixture('postgresql')
t1 = table("ins_table",
column('id', Integer),
column('v1', String()),
column('v2', String()),
)
op.bulk_insert(t1, [
{'v1':'row v1', },
])
context.assert_(
'INSERT INTO ins_table (id, v1, v2) VALUES (%(id)s, %(v1)s, %(v2)s)'
)
def test_bulk_insert_pg():
context = _test_bulk_insert('postgresql', False)
context.assert_(
'INSERT INTO ins_table (id, v1, v2) VALUES (%(id)s, %(v1)s, %(v2)s)'
)
def test_bulk_insert_pg_single():
context = _test_bulk_insert_single('postgresql', False)
context.assert_(
'INSERT INTO ins_table (id, v1, v2) VALUES (%(id)s, %(v1)s, %(v2)s)'
)
def test_bulk_insert_pg_single_as_sql():
context = _test_bulk_insert_single('postgresql', True)
context.assert_(
"INSERT INTO ins_table (id, v1, v2) VALUES (1, 'row v1', 'row v5')"
)
def test_bulk_insert_pg_single_big_t_as_sql():
context = _test_bulk_insert_single_bigt('postgresql', True)
context.assert_(
"INSERT INTO ins_table (id, v1, v2) VALUES (1, 'row v1', 'row v5')"
)
def test_bulk_insert_mssql():
context = _test_bulk_insert('mssql', False)
context.assert_(
'INSERT INTO ins_table (id, v1, v2) VALUES (:id, :v1, :v2)'
)
def test_bulk_insert_as_sql():
context = _test_bulk_insert('default', True)
context.assert_(
"INSERT INTO ins_table (id, v1, v2) VALUES (1, 'row v1', 'row v5')",
"INSERT INTO ins_table (id, v1, v2) VALUES (2, 'row v2', 'row v6')",
"INSERT INTO ins_table (id, v1, v2) VALUES (3, 'row v3', 'row v7')",
"INSERT INTO ins_table (id, v1, v2) VALUES (4, 'row v4', 'row v8')"
)
def test_bulk_insert_as_sql_pg():
context = _test_bulk_insert('postgresql', True)
context.assert_(
"INSERT INTO ins_table (id, v1, v2) VALUES (1, 'row v1', 'row v5')",
"INSERT INTO ins_table (id, v1, v2) VALUES (2, 'row v2', 'row v6')",
"INSERT INTO ins_table (id, v1, v2) VALUES (3, 'row v3', 'row v7')",
"INSERT INTO ins_table (id, v1, v2) VALUES (4, 'row v4', 'row v8')"
)
def test_bulk_insert_as_sql_mssql():
context = _test_bulk_insert('mssql', True)
# SQL server requires IDENTITY_INSERT
# TODO: figure out if this is safe to enable for a table that
# doesn't have an IDENTITY column
context.assert_(
'SET IDENTITY_INSERT ins_table ON',
"INSERT INTO ins_table (id, v1, v2) VALUES (1, 'row v1', 'row v5')",
"INSERT INTO ins_table (id, v1, v2) VALUES (2, 'row v2', 'row v6')",
"INSERT INTO ins_table (id, v1, v2) VALUES (3, 'row v3', 'row v7')",
"INSERT INTO ins_table (id, v1, v2) VALUES (4, 'row v4', 'row v8')",
'SET IDENTITY_INSERT ins_table OFF'
)
def test_invalid_format():
context, t1 = _table_fixture("sqlite", False)
assert_raises_message(
TypeError,
"List expected",
op.bulk_insert, t1, {"id":5}
)
assert_raises_message(
TypeError,
"List of dictionaries expected",
op.bulk_insert, t1, [(5, )]
)
class RoundTripTest(TestCase):
def setUp(self):
from sqlalchemy import create_engine
from alembic.migration import MigrationContext
self.conn = create_engine("sqlite://").connect()
self.conn.execute("""
create table foo(
id integer primary key,
data varchar(50),
x integer
)
""")
context = MigrationContext.configure(self.conn)
self.op = op.Operations(context)
self.t1 = table('foo',
column('id'),
column('data'),
column('x')
)
def tearDown(self):
self.conn.close()
def test_single_insert_round_trip(self):
self.op.bulk_insert(self.t1,
[{'data':"d1", "x":"x1"}]
)
eq_(
self.conn.execute("select id, data, x from foo").fetchall(),
[
(1, "d1", "x1"),
]
)
def test_bulk_insert_round_trip(self):
self.op.bulk_insert(self.t1, [
{'data':"d1", "x":"x1"},
{'data':"d2", "x":"x2"},
{'data':"d3", "x":"x3"},
])
eq_(
self.conn.execute("select id, data, x from foo").fetchall(),
[
(1, "d1", "x1"),
(2, "d2", "x2"),
(3, "d3", "x3")
]
)
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