public void TestRecordCreatedModelsWithEmptyInput()
{
WorkspaceModel workspace = Controller.DynamoViewModel.CurrentSpace;
Assert.AreEqual(false, workspace.CanUndo);
// Calling the method with a null argument.
workspace.RecordCreatedModels(null);
Assert.AreEqual(false, workspace.CanUndo);
// Calling the method with an empty list.
List<ModelBase> models = new List<ModelBase>();
workspace.RecordCreatedModels(models);
Assert.AreEqual(false, workspace.CanUndo);
// Calling the method with a list full of null.
models.Add(null);
models.Add(null);
workspace.RecordCreatedModels(models);
Assert.AreEqual(false, workspace.CanUndo);
}