def test_ordering(self):
constraint = ParameterConstraint('a <= b')
self.assertEqual(constraint.affected_parameters, {'a', 'b'})
self.assertTrue(constraint.is_fulfilled(dict(a=1, b=2)))
self.assertTrue(constraint.is_fulfilled(dict(a=2, b=2)))
self.assertFalse(constraint.is_fulfilled(dict(a=2, b=1)))
def test_expressions(self):
constraint = ParameterConstraint('Max(a, b) < a*c')
self.assertEqual(constraint.affected_parameters, {'a', 'b', 'c'})
self.assertTrue(constraint.is_fulfilled(dict(a=2, b=2, c=3)))
self.assertFalse(constraint.is_fulfilled(dict(a=3, b=5, c=1)))
