def setUp(self):
self.model = Model()
x = Variable('x', lb=0, ub=10)
y = Variable('y', lb=0, ub=10)
constr = Constraint(1. * x + y, lb=3, name="constr1")
obj = Objective(2 * x + y)
self.model.add(x)
self.model.add(y)
self.model.add(constr)
self.model.objective = obj
def test_variable_independence(self):
model = Model()
x = Variable('x', lb=0, ub=20)
self.assertNotEqual(id(x), id(self.model.variables['x']))
y = Variable('y', lb=0, ub=10)
constr = Constraint(1. * x + y, lb=3, name="constr1")
model.add(constr)
self.assertNotEqual(id(self.model.variables['x']),
id(model.variables['x']))
self.assertNotEqual(id(self.model.variables['y']),
id(model.variables['y']))
self.assertNotEqual(self.model.variables['y'].problem, model)
self.assertNotEqual(self.model.variables['x'].problem, model)
x.lb = -10
self.assertNotEqual(self.model.variables['x'].lb,
model.variables['x'].lb)
def test_create_empty_model(self):
model = Model()
self.assertEqual(len(model.constraints), 0)
self.assertEqual(len(model.variables), 0)
self.assertEqual(model.objective.expression, 0)
def setUp(self):
self.model = Model()
self.container = self.model.variables
def test_change_problem(self):
model = Model()
self.var.problem = model
self.assertEqual(self.var.problem, model)
