public void SimpleTestWithSearchMonitorsAndDecisionBuilder()
{
CpModel model;
string modelText;
const string modelName = "TestModelLoader";
const string equationText = "((x(0..10) + y(0..10)) == 5)";
using (var s = new Solver(modelName))
{
var x = s.MakeIntVar(0, 10, "x");
var y = s.MakeIntVar(0, 10, "y");
var c = x + y == 5;
Assert.That(c.Cst.ToString(), Is.EqualTo(equationText));
s.Add(c);
Assert.That(s.ConstraintCount(), Is.EqualTo(1));
var collector = s.MakeAllSolutionCollector();
var db = s.MakePhase(x, y, ChooseFirstUnbound, AssignMinValue);
Console.WriteLine("First search...");
s.NewSearch(db, collector);
while (s.NextSolution())
{
Console.WriteLine($"{x.ToString()} + {y.ToString()} == 5");
break;
}
s.EndSearch();
using (var vect = new SearchMonitorVector())
{
vect.Add(collector);
model = s.ExportModelWithSearchMonitorsAndDecisionBuilder(vect, db);
modelText = model.ToString();
}
}
using (var s = new Solver(modelName))
{
// TODO: TBD: load but without any monitors and/or DB ...
s.LoadModel(model);
var loader = s.ModelLoader();
// Do a quick sanity check that we at least have the proper constraint loaded.
Assert.That(s.ConstraintCount(), Is.EqualTo(1));
var x = loader.IntegerExpressionByName("x").Var();
var y = loader.IntegerExpressionByName("y").Var();
{
var c = x + y == 5;
// These should PASS as well...
Assert.That(c.Cst.ToString(), Is.Not.EqualTo("TrueConstraint()"));
Assert.That(c.Cst.ToString(), Is.EqualTo(equationText));
}
{
/* I dare say that THIS should PASS as well, but due to the fact that IntVar and
* derivatives are treated as IntExpr, it is FAILING. */
var actual = s.ExportModel();
Assert.That(actual.ToString(), Is.EqualTo(modelText));
}
var db = s.MakePhase(x, y, ChooseFirstUnbound, AssignMinValue);
Console.WriteLine("Second search...");
s.NewSearch(db);
while (s.NextSolution())
{
Console.WriteLine($"{x.ToString()} + {y.ToString()} == 5");
}
s.EndSearch();
}
}