def test_log_model_constraints(self):
m = ConcreteModel()
m.x = Var(initialize=1)
m.c1 = Constraint(expr=m.x >= 2)
m.c2 = Constraint(expr=m.x == 4)
m.c3 = Constraint(expr=m.x <= 0)
m.y = Var(bounds=(0, 2), initialize=1.9999999)
m.c4 = Constraint(expr=m.y >= m.y.value)
m.z = Var(bounds=(0, 6))
m.c5 = Constraint(expr=inequality(5, m.z, 10), doc="Range infeasible")
m.c6 = Constraint(expr=m.x + m.y <= 6, doc="Feasible")
m.c7 = Constraint(expr=m.z == 6, doc="Equality infeasible")
m.c8 = Constraint(expr=inequality(3, m.x, 6), doc="Range lb infeasible")
m.c9 = Constraint(expr=inequality(0, m.x, 0.5), doc="Range ub infeasible")
m.c10 = Constraint(expr=m.y >= 3, doc="Inactive")
m.c10.deactivate()
m.c11 = Constraint(expr=m.y <= m.y.value)
m.yy = Var(bounds=(0, 1), initialize=1E-7, doc="Close to lower bound")
m.y3 = Var(bounds=(0, 1E-7), initialize=0, doc="Bounds too close")
m.y4 = Var(bounds=(0, 1), initialize=2, doc="Fixed out of bounds.")
m.y4.fix()
output = StringIO()
with LoggingIntercept(output, 'pyomo.util', logging.INFO):
log_model_constraints(m)
expected_output = [
"c1 active", "c2 active", "c3 active", "c4 active",
"c5 active", "c6 active", "c7 active", "c8 active",
"c9 active", "c11 active"
]
self.assertEqual(expected_output, output.getvalue().splitlines())
def log_active_constraints(m, logger=logger):
log_model_constraints(m, logger)