public void DeleteElement_ElementDoesNotExistInProblem_ExpectNothingHappens()
{
//Arrange
var modelProblem = new ModelProblem("problem");
var otherProblem = new ModelProblem("otherProblem");
var strayElement = new ModelBarElement(otherProblem, 1234, new ModelNode(otherProblem, 123), new ModelNode(otherProblem, 1234));
//Act
modelProblem.DeleteElement(strayElement);
//Assert
Assert.That(modelProblem.Elements, Is.Empty);
}
public IModelElement AddElement(IModelNode origin, IModelNode destination)
{
if (origin is null)
{
throw new ArgumentNullException(nameof(origin));
}
if (destination is null)
{
throw new ArgumentNullException(nameof(destination));
}
if (!Nodes.Contains(origin))
{
throw new InvalidOperationException($"Node {nameof(origin)} does not exist in current problem");
}
if (!Nodes.Contains(destination))
{
throw new InvalidOperationException($"Node {nameof(destination)} does not exist in current problem");
}
if (origin == destination)
{
throw new InvalidOperationException($"Nodes {nameof(origin)} and {nameof(destination)} are the same node");
}
if (Elements.Any(other => other.OriginNode == origin && other.DestinationNode == destination ||
other.OriginNode == destination && other.DestinationNode == origin))
{
throw new InvalidOperationException($"An element with nodes {origin.Id} and {destination.Id} already exists in current problem");
}
var id = GetNextId(_elements);
var element = new ModelBarElement(this, id, origin, destination)
{
Material = GetOrCreateDefaultMaterial()
};
_elements.Add(element);
return(element);
}
