public void Execute(object parameter)
{
if (CanExecute(parameter))
{
_problemViewModel.DeleteSelectedForce();
}
}
public void DeleteSelectedForce_SelectedForce_ExpectSelectedForceIsNull()
{
//Arrange
var problemViewModel = new ProblemViewModel();
problemViewModel.AddNode();
//Act
problemViewModel.DeleteSelectedForce();
//Assert
Assert.That(problemViewModel.SelectedForce, Is.Null);
}
public void DeleteSelectedForce_NullSelectedForce_ExpectNothingHappened()
{
//Arrange
var problemViewModel = new ProblemViewModel();
var nodeViewModel = problemViewModel.AddNode();
var forceViewModel = problemViewModel.AddForce(nodeViewModel);
problemViewModel.SelectedForce = null;
//Act
//Assert
Assert.DoesNotThrow(() => problemViewModel.DeleteSelectedForce());
}
public void DeleteSelectedForce_SelectedForce_ExpectForceRemovedFromCollection()
{
//Arrange
var problemViewModel = new ProblemViewModel();
var nodeViewModel = problemViewModel.AddNode();
var forceViewModel = problemViewModel.AddForce(nodeViewModel);
//Act
problemViewModel.DeleteSelectedForce();
//Assert
var containsForce = problemViewModel.Forces.Contains(forceViewModel);
Assert.That(containsForce, Is.False);
}
