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from __future__ import with_statement
from tests import clear_staging_env, staging_env, \
_no_sql_testing_config, sqlite_db, eq_, ne_, capture_context_buffer, \
three_rev_fixture
from alembic import command, util
def setup():
global cfg, env
env = staging_env()
cfg = _no_sql_testing_config()
cfg.set_main_option('dialect_name', 'sqlite')
cfg.remove_main_option('url')
global a, b, c
a, b, c = three_rev_fixture(cfg)
def teardown():
clear_staging_env()
def test_begin_comit():
with capture_context_buffer(transactional_ddl=True) as buf:
command.upgrade(cfg, a, sql=True)
assert "BEGIN;" in buf.getvalue()
assert "COMMIT;" in buf.getvalue()
with capture_context_buffer(transactional_ddl=False) as buf:
command.upgrade(cfg, a, sql=True)
assert "BEGIN;" not in buf.getvalue()
assert "COMMIT;" not in buf.getvalue()
def test_version_from_none_insert():
with capture_context_buffer() as buf:
command.upgrade(cfg, a, sql=True)
assert "CREATE TABLE alembic_version" in buf.getvalue()
assert "INSERT INTO alembic_version" in buf.getvalue()
assert "CREATE STEP 1" in buf.getvalue()
assert "CREATE STEP 2" not in buf.getvalue()
assert "CREATE STEP 3" not in buf.getvalue()
def test_version_from_middle_update():
with capture_context_buffer() as buf:
command.upgrade(cfg, "%s:%s" % (b, c), sql=True)
assert "CREATE TABLE alembic_version" not in buf.getvalue()
assert "UPDATE alembic_version" in buf.getvalue()
assert "CREATE STEP 1" not in buf.getvalue()
assert "CREATE STEP 2" not in buf.getvalue()
assert "CREATE STEP 3" in buf.getvalue()
def test_version_to_none():
with capture_context_buffer() as buf:
command.downgrade(cfg, "%s:base" % c, sql=True)
assert "CREATE TABLE alembic_version" not in buf.getvalue()
assert "INSERT INTO alembic_version" not in buf.getvalue()
assert "DROP TABLE alembic_version" in buf.getvalue()
assert "DROP STEP 3" in buf.getvalue()
assert "DROP STEP 2" in buf.getvalue()
assert "DROP STEP 1" in buf.getvalue()
def test_version_to_middle():
with capture_context_buffer() as buf:
command.downgrade(cfg, "%s:%s" % (c, a), sql=True)
assert "CREATE TABLE alembic_version" not in buf.getvalue()
assert "INSERT INTO alembic_version" not in buf.getvalue()
assert "DROP TABLE alembic_version" not in buf.getvalue()
assert "DROP STEP 3" in buf.getvalue()
assert "DROP STEP 2" in buf.getvalue()
assert "DROP STEP 1" not in buf.getvalue()
def test_stamp():
with capture_context_buffer() as buf:
command.stamp(cfg, "head", sql=True)
assert "UPDATE alembic_version SET version_num='%s';" % c in buf.getvalue()
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