public void Start_TplManySlowFitness_Timeout()
{
var taskExecutor = new TplTaskExecutor();
taskExecutor.Timeout = TimeSpan.FromMilliseconds(1000);
var selection = new RouletteWheelSelection();
var crossover = new OnePointCrossover(1);
var mutation = new UniformMutation();
var chromosome = new ChromosomeStub();
var target = new GeneticAlgorithm(new TplPopulation(100, 150, chromosome),
new FitnessStub()
{
SupportsParallel = true, ParallelSleep = 1500
}, selection, crossover, mutation);
target.OperatorsStrategy = new TplOperatorsStrategy();
target.TaskExecutor = taskExecutor;
Assert.Catch <TimeoutException>(() =>
{
target.Start();
}, "The fitness evaluation reached the 00:00:01 timeout.");
Assert.IsFalse(target.IsRunning);
Assert.AreEqual(GeneticAlgorithmState.Stopped, target.State);
}
public void Start_AnyTaskWithException_Exception()
{
var pipeline = "";
var target = new TplTaskExecutor();
target.Add(() =>
{
throw new Exception("1");
});
target.Add(() =>
{
Thread.Sleep(5);
pipeline += "2";
});
target.Add(() =>
{
Thread.Sleep(5);
pipeline += "3";
});
Assert.Catch <Exception>(() =>
{
target.Start();
}, "1");
}
public void Start_ManyTasksWithGreaterNumberOfThreads_ParallelExecuted()
{
var pipeline = "";
var target = new TplTaskExecutor();
target.Add(() =>
{
pipeline += "1";
});
target.Add(() =>
{
Thread.Sleep(100);
pipeline += "2";
});
target.Add(() =>
{
Thread.Sleep(10);
pipeline += "3";
});
var actual = target.Start();
Assert.IsTrue(actual);
Assert.AreEqual("132", pipeline);
}
public void Stop_Tasks_ShutdownCalled()
{
var pipeline = "";
var target = new TplTaskExecutor
{
Timeout = TimeSpan.FromMilliseconds(1000)
};
target.Add(() =>
{
Thread.Sleep(500);
pipeline += "1";
});
target.Add(() =>
{
Thread.Sleep(500);
pipeline += "2";
});
target.Add(() =>
{
Thread.Sleep(500);
pipeline += "3";
});
Parallel.Invoke(
() => target.Start(),
() =>
{
Thread.Sleep(100);
target.Stop();
});
Assert.IsFalse(target.IsRunning);
}
public void Stop_ManyTasks_StopAll()
{
var pipeline = "";
var target = new TplTaskExecutor();
target.Timeout = TimeSpan.FromMilliseconds(1000);
target.Add(() =>
{
Thread.Sleep(5);
pipeline += "1";
});
target.Add(() =>
{
Thread.Sleep(5);
pipeline += "2";
});
target.Add(() =>
{
Thread.Sleep(5);
pipeline += "3";
});
Parallel.Invoke(
() => Assert.IsTrue(target.Start()),
() =>
{
Thread.Sleep(100);
target.Stop();
});
}
public void Start_TplManyGenerations_Optimization()
{
var taskExecutor = new TplTaskExecutor();
var selection = new EliteSelection();
var crossover = new OnePointCrossover(1);
var mutation = new UniformMutation();
var chromosome = new ChromosomeStub();
FlowAssert.IsAtLeastOneAttemptOk(20, () =>
{
var target = new GeneticAlgorithm(new TplPopulation(100, 150, chromosome),
new FitnessStub()
{
SupportsParallel = true
}, selection, crossover, mutation);
target.OperatorsStrategy = new TplOperatorsStrategy();
target.TaskExecutor = taskExecutor;
Assert.AreEqual(GeneticAlgorithmState.NotStarted, target.State);
Assert.IsFalse(target.IsRunning);
target.Start();
Assert.AreEqual(GeneticAlgorithmState.TerminationReached, target.State);
Assert.IsFalse(target.IsRunning);
Assert.IsTrue(target.Population.CurrentGeneration.Chromosomes.Count >= 100);
Assert.IsTrue(target.Population.CurrentGeneration.Chromosomes.Count <= 150);
Assert.IsNotNull(target.Population.BestChromosome);
Assert.IsTrue(target.Population.BestChromosome.Fitness >= 0.9);
Assert.IsTrue(target.Population.Generations.Count > 0);
});
FlowAssert.IsAtLeastOneAttemptOk(20, () =>
{
var target = new GeneticAlgorithm(new TplPopulation(100, 150, chromosome),
new FitnessStub()
{
SupportsParallel = true
}, selection, crossover, mutation);
target.OperatorsStrategy = new TplOperatorsStrategy();
target.TaskExecutor = taskExecutor;
target.Start();
Assert.IsTrue(target.Population.CurrentGeneration.Chromosomes.Count >= 100);
Assert.IsTrue(target.Population.CurrentGeneration.Chromosomes.Count <= 150);
Assert.IsNotNull(target.Population.BestChromosome);
Assert.IsTrue(target.Population.BestChromosome.Fitness >= 0.9);
Assert.IsTrue(target.Population.Generations.Count > 0);
});
}
public void Start_Timeout_False()
{
var pipeline = "1";
var target = new TplTaskExecutor();
target.Timeout = TimeSpan.FromMilliseconds(2);
target.Add(() =>
{
Thread.Sleep(10);
pipeline += "2";
});
var actual = target.Start();
Assert.IsFalse(actual);
}
public void Start_MaxThreads1_DoNotBlockOtherThreads()
{
var target = new TplTaskExecutor
{
MinThreads = 1,
MaxThreads = 1
};
target.Add(() =>
{
});
target.Add(() =>
{
Thread.Sleep(200);
});
target.Add(() =>
{
Thread.Sleep(10);
});
int otherThreadCount = 0;
var otherThread = new System.Timers.Timer(50)
{
AutoReset = true
};
otherThread.Elapsed += (sender, arg) =>
{
otherThreadCount++;
};
otherThread.Start();
Task.Run(() =>
{
target.Start();
}).Wait();
otherThread.Stop();
Assert.GreaterOrEqual(otherThreadCount, 2);
}