def test_cant_change_computed_warning(self, test_case):
arg_before, arg_after = testing.resolve_lambda(test_case, **locals())
m1 = MetaData()
m2 = MetaData()
arg_before = [] if arg_before is None else [arg_before]
arg_after = [] if arg_after is None else [arg_after]
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("bar", Integer),
Column("foo", Integer, *arg_before),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("bar", Integer),
Column("foo", Integer, *arg_after),
)
with mock.patch("alembic.util.warn") as mock_warn:
diffs = self._fixture(m1, m2)
eq_(
mock_warn.mock_calls,
[mock.call("Computed default on user.foo cannot be modified")],
)
eq_(list(diffs), [])
def test_computed_unchanged(self, test_case):
arg_before, arg_after = testing.resolve_lambda(test_case, **locals())
m1 = MetaData()
m2 = MetaData()
arg_before = [] if arg_before is None else [arg_before]
arg_after = [] if arg_after is None else [arg_after]
Table(
"user",
m1,
Column("id", Integer, primary_key=True),
Column("bar", Integer),
Column("foo", Integer, *arg_before),
)
Table(
"user",
m2,
Column("id", Integer, primary_key=True),
Column("bar", Integer),
Column("foo", Integer, *arg_after),
)
diffs = self._fixture(m1, m2)
eq_(len(diffs), 0)