public void DoClear_Should_add_old_elements_When_undone()
{
ICollection <object> source = new List <object>
{
new object(),
new object(),
new object()
};
IUnDoManager manager = Substitute.For <IUnDoManager>();
IUnDo undo = null;
List <object> sourceCopy = source.ToList();
manager.Do(Arg.Do <IUnDo>(i => undo = i));
manager.DoClear(source);
Check.That(undo).IsNotNull();
undo.Do();
Check.That(source.Count).IsEqualTo(0);
undo.Undo();
Check.That(source).ContainsExactly(sourceCopy);
}
public void DoClear_Should_throw_ArgumentNullException_When_source_is_null()
{
IUnDoManager manager = Substitute.For <IUnDoManager>();
ICollection <object> source = null;
Check
.ThatCode(() => manager.DoClear(source))
.Throws <ArgumentNullException>()
.WithProperty("ParamName", "source");
}
void ICollection <T> .Clear() => _manager.DoClear(_source, _descriptionFactory?.Invoke(new UnDoCollectionOperation(this, UnDoCollectionAction.ICollectionClear)));
