public void DeleteSelectedElement_SelectedElement_ExpectSelectedElementIsNull()
{
//Arrange
var problemViewModel = new ProblemViewModel();
var node1 = problemViewModel.AddNode();
var node2 = problemViewModel.AddNode();
var elementViewModel = problemViewModel.AddBarElement(node1, node2);
//Act
problemViewModel.DeleteSelectedElement();
//Assert
Assert.That(problemViewModel.SelectedElement, Is.Null);
}
public void DeleteSelectedElement_NullSelectedElement_ExpectNothingHappened()
{
//Arrange
var problemViewModel = new ProblemViewModel();
var node1 = problemViewModel.AddNode();
var node2 = problemViewModel.AddNode();
var elementViewModel = problemViewModel.AddBarElement(node1, node2);
problemViewModel.SelectedElement = null;
//Act
//Assert
Assert.DoesNotThrow(() => problemViewModel.DeleteSelectedElement());
}
public void DeleteSelectedElement_SelectedElement_ExpectElementRemovedFromCollection()
{
//Arrange
var problemViewModel = new ProblemViewModel();
var node1 = problemViewModel.AddNode();
var node2 = problemViewModel.AddNode();
var elementViewModel = problemViewModel.AddBarElement(node1, node2);
//Act
problemViewModel.DeleteSelectedElement();
//Assert
var containsElement = problemViewModel.Elements.Contains(elementViewModel);
Assert.That(containsElement, Is.False);
}
public void Execute(object parameter)
{
if (CanExecute(parameter)) _problemViewModel.DeleteSelectedElement();
}
