public void AddChildEntity_ShouldAddChildEntitiesWithIncrementingDefaultNames_WhenEntityInitiallyHasNoChildren()
{
// Arrange
var entity = new Entity();
var entityModel = new EntityModel(entity);
// Act
entityModel.AddChildEntity();
entityModel.AddChildEntity();
entityModel.AddChildEntity();
// Assert
Assert.That(entityModel.Children.Select(e => e.Name), Is.EquivalentTo(new[] { "Child entity 1", "Child entity 2", "Child entity 3" }));
}
public void AddChildEntity_ShouldAddNewChildEntityAndNotifyWithEvent()
{
// Arrange
var entity = new Entity();
var entityModel = new EntityModel(entity);
object?eventSender = null;
EntityAddedEventArgs?eventArgs = null;
entityModel.EntityAdded += (sender, args) =>
{
eventSender = sender;
eventArgs = args;
};
// Act
entityModel.AddChildEntity();
// Assert
Assert.That(entity.Children, Has.Count.EqualTo(1));
Assert.That(entityModel.Children, Has.Count.EqualTo(1));
var childEntity = entity.Children.Single();
var childEntityModel = entityModel.Children.Single();
Assert.That(childEntity.Name, Is.EqualTo("Child entity 1"));
Assert.That(childEntityModel.Name, Is.EqualTo("Child entity 1"));
Assert.That(eventSender, Is.EqualTo(entityModel));
Debug.Assert(eventArgs != null, nameof(eventArgs) + " != null");
Assert.That(eventArgs.EntityModel, Is.EqualTo(childEntityModel));
}
private void AddChildEntity()
{
_entityModel.AddChildEntity();
}
