def METHOD_NAME(self):
    """Test with coefficient on constraint."""
    m = ConcreteModel()
    m.v1 = Var(initialize=7, bounds=(7, 10))
    m.v2 = Var(initialize=2, bounds=(2, 5))
    m.v3 = Var(initialize=6, bounds=(6, 9))
    m.v4 = Var(initialize=1, bounds=(1, 1))
    m.c1 = Constraint(expr=m.v1 <= 2 * m.v2 + m.v3 + m.v4)
    self.assertEqual(value(m.c1.upper), 0)
    self.assertFalse(m.c1.has_lb())
    TransformationFactory('core.tighten_constraints_from_vars').apply_to(m)
    self.assertEqual(value(m.c1.upper), -1)
    self.assertEqual(value(m.c1.lower), -13)