public void TestStopCondition()
{
// set the seed manually.
RandomGeneratorExtensions.GetGetNewRandom = () => new RandomGenerator(4541247);
// create solver.
var best = new SolutionMock()
{
Value = 1000
};
IterativeSolver <float, ProblemMock, ObjectiveMock, SolutionMock, float> solver = null;
solver = new IterativeSolver <float, ProblemMock, ObjectiveMock, SolutionMock, float>(
new GeneratorMock(), 10, (i, p, o, s) =>
{
if (s != null && best.Value > s.Value)
{ // keep best solution.
best = s;
if (best.Value < 100)
{
return(true);
}
}
return(false);
});
// run solver.
var solution = solver.Solve(new ProblemMock()
{
Max = 1000
}, new ObjectiveMock());
Assert.AreEqual(best.Value, solution.Value);
}
public void TestStop()
{
// set the seed manually.
RandomGeneratorExtensions.GetGetNewRandom = () => new RandomGenerator(4541247);
// create solver.
var best = new SolutionMock()
{
Value = 1000
};
IterativeSolver <float, ProblemMock, ObjectiveMock, SolutionMock, float> solver = null;
solver = new IterativeSolver <float, ProblemMock, ObjectiveMock, SolutionMock, float>(
new GeneratorMock(), 10, (i, p, o, s) =>
{
if (s != null && best.Value > s.Value)
{ // keep best solution.
best = s;
}
if (i > 5)
{ // stop solver.
solver.Stop();
}
if (i > 6)
{ // solver was not stopped.
Assert.Fail("Solver has not stopped!");
}
// ... but always return false.
return(false);
});
// run solver.
var solution = solver.Solve(new ProblemMock()
{
Max = 1000
}, new ObjectiveMock());
Assert.AreEqual(best.Value, solution.Value);
}
