public void ExecutionPanelViewModel_Dispose()
{
GeneticAlgorithm algorithm = CreateTestAlgorithm();
ExecutionContext context = new ExecutionContext(algorithm);
ExecutionPanelViewModel viewModel = new ExecutionPanelViewModel(context);
context.ExecutionState = ExecutionState.Running;
viewModel.Dispose();
// Verify the ExecutionState is not reset when the genetic algorithm completes.
PrivateObject algorithmAccessor = new PrivateObject(algorithm, new PrivateType(typeof(GeneticAlgorithm)));
algorithmAccessor.Invoke("OnAlgorithmCompleted");
Assert.Equal(ExecutionState.Running, context.ExecutionState);
// Verify the view model has unsubscribed from the FitnessEvaluated event.
context.ExecutionState = ExecutionState.PausePending;
EnvironmentFitnessEvaluatedEventArgs eventArgs = new EnvironmentFitnessEvaluatedEventArgs(new GeneticEnvironment(algorithm), 0);
algorithmAccessor.Invoke("OnFitnessEvaluated", eventArgs);
Assert.False(eventArgs.Cancel);
}
public void EnvironmentFitnessEvaluatedEventArgs_Constructor()
{
GeneticEnvironment environment = new GeneticEnvironment(new MockGeneticAlgorithm());
int generationIndex = 2;
EnvironmentFitnessEvaluatedEventArgs args = new EnvironmentFitnessEvaluatedEventArgs(
environment, generationIndex);
Assert.Same(environment, args.Environment);
Assert.Equal(generationIndex, args.GenerationIndex);
}
/// <summary>
/// Handles the event when the algorithm has evaluated the fitness of a population.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">The<see cref="EnvironmentFitnessEvaluatedEventArgs"/> associated with the event.</param>
private void Algorithm_FitnessEvaluated(object?sender, EnvironmentFitnessEvaluatedEventArgs e)
{
if (e.GenerationIndex == 0)
{
this.RefreshAllSeries();
}
else
{
this.RefreshPlot();
}
}
/// <summary>
/// Handles the event when the algorithm has evaluated the fitness of a population.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">The<see cref="EnvironmentFitnessEvaluatedEventArgs"/> associated with the event.</param>
private void Algorithm_FitnessEvaluated(object?sender, EnvironmentFitnessEvaluatedEventArgs e)
{
this.Dispatcher.Invoke(() =>
{
bool forceRefresh = false;
if (this.TryInitializeStopwatch())
{
forceRefresh = true;
}
this.RefreshChart(forceRefresh);
});
}
/// <summary>
/// Handles the event when the associated <see cref="GeneticAlgorithm"/> has evaluted the fitness of a generation.
/// </summary>
/// <param name="sender">Sender of the event.</param>
/// <param name="e">The <see cref="EnvironmentFitnessEvaluatedEventArgs"/> associated with the event.</param>
private void GeneticAlgorithm_FitnessEvaluated(object?sender, EnvironmentFitnessEvaluatedEventArgs e)
{
if (this.context.ExecutionState == ExecutionState.PausePending ||
this.context.ExecutionState == ExecutionState.IdlePending)
{
e.Cancel = true;
if (this.context.ExecutionState == ExecutionState.PausePending)
{
this.context.ExecutionState = ExecutionState.Paused;
}
else
{
this.context.ExecutionState = ExecutionState.Idle;
this.UnsubscribeFromAlgorithmEvents();
}
}
}
