def test_fields_(self):
empty_criterion = EmptyCriterion()
self.assertEqual(len(empty_criterion.fields_()), 0)
def test_ignore_empty_criterion(self):
q1 = Query.from_(self.t).select("*").where(EmptyCriterion())
self.assertEqual('SELECT * FROM "abc"', str(q1))
def definition(self):
return EmptyCriterion()
