public void VerifySolverModelSerialization()
{
const string solverName1 = "Test1";
const string solverName2 = "Test2";
const string path =
@"G:\Source\Kingdom Software\Kingdom.ConstraintSolvers\Working\src\Kingdom.Constraints.Sample.Fixturing.Tests\ExportedSolverModel.dat";
using (var sc = GetSampleContext(solverName1))
{
sc.NewSearch();
var vars = sc.Expressions.OfType <IntVar>().ToArray();
var x = vars.SingleOrDefault(v => v.Name() == "x");
var y = vars.SingleOrDefault(v => v.Name() == "y");
Assert.That(x, Is.Not.Null);
Assert.That(y, Is.Not.Null);
var collector = sc.Monitors.OfType <SolutionCollector>().SingleOrDefault();
Assert.That(collector, Is.Not.Null);
var count = 0;
while (sc.NextSolution())
{
// ReSharper disable once PossibleNullReferenceException
Assert.That(collector.SolutionCount(), Is.GreaterThan(0));
Assert.That(collector.SolutionCount(), Is.EqualTo(++count));
// ReSharper disable once PossibleNullReferenceException
Console.WriteLine("Solution: {0} + {1} = 5", x.Value(),
// ReSharper disable once PossibleNullReferenceException
y.Value()
);
break;
}
sc.Save(path);
}
//const string constraintName = "equation";
using (var sc = new SolverContext(solverName2))
{
sc
.Monitor(s => s.MakeAllSolutionCollector())
;
var collector = sc.Monitors.OfType <SolutionCollector>().SingleOrDefault();
sc.Load(path);
//Assert.That(sc.Solver.ConstraintCount(), Is.EqualTo(1));
var x = GetIntVarFromIntExpr(sc.Solver.ModelLoader(), "x");
var y = GetIntVarFromIntExpr(sc.Solver.ModelLoader(), "y");
var strats = new { Var = Solver.INT_VAR_SIMPLE, Val = Solver.INT_VALUE_SIMPLE };
sc
.Expression(delegate { return(x); })
.Expression(delegate { return(y); })
.Constrain(s =>
{
var c = x + y == 5;
//c.Cst.SetName(constraintName);
//Assert.That(c.Cst.Name(), Is.EqualTo(constraintName));
Assert.That(c.Cst.Name(), Is.EqualTo(string.Empty));
Assert.That(c, Is.TypeOf <WrappedConstraint>());
Assert.That(c.Cst.ToString(), Is.Not.EqualTo("TrueConstraint()"));
Assert.That(c.Cst.ToString(), Is.EqualTo("((x(0..10) + y(0..10)) == 5)"));
return(c);
})
.CreateDecisionBuilder(
e => new IntVarVector(e.OfType <IntVar>().ToList())
, (s, vect) => s.MakePhase(vect, strats.Var, strats.Val)
)
;
// TODO: TBD: new search? or ability to pick up where we left off?
sc.NewSearch();
// TODO: TBD: currently, "re-loading" does not include state, i.e. previously covered ground, so to speak.
var count = 0;
while (sc.NextSolution())
{
// ReSharper disable once PossibleNullReferenceException
Assert.That(collector.SolutionCount(), Is.GreaterThan(0));
Assert.That(collector.SolutionCount(), Is.EqualTo(++count));
// ReSharper disable once PossibleNullReferenceException
Console.WriteLine("Solution: {0} + {1} = 5", x.Value(),
// ReSharper disable once PossibleNullReferenceException
y.Value()
);
break;
}
// TODO: TBD: we seem to have the Constraints loaded. What about the variables?
}
}