public void SourceManipulation()
{
var people = new ObservableDictionary <string, TestPerson>(TestPerson.CreatePeopleCollection().ToDictionary(p => p.Name));
using (var aggregate = people.ActiveMax((key, value) => value.Name.Length))
{
Assert.IsNull(aggregate.OperationFault);
Assert.AreEqual(7, aggregate.Value);
people.Add("John2", people["John"]);
Assert.AreEqual(7, aggregate.Value);
people["John"].Name = "Johnathon";
Assert.AreEqual(9, aggregate.Value);
people["John"].Name = "John";
Assert.AreEqual(7, aggregate.Value);
}
}
public void ExpressionlessSourceManipulation()
{
var numbers = new ObservableDictionary <int, int>();
using var aggregate = numbers.ActiveMax();
Assert.IsNotNull(aggregate.OperationFault);
Assert.AreEqual(0, aggregate.Value);
numbers.Add(1, 1);
Assert.IsNull(aggregate.OperationFault);
Assert.AreEqual(1, aggregate.Value);
numbers.AddRange(System.Linq.Enumerable.Range(2, 3).Select(i => new KeyValuePair <int, int>(i, i)));
Assert.AreEqual(4, aggregate.Value);
numbers.RemoveRange(new int[] { 1, 2 });
Assert.AreEqual(4, aggregate.Value);
numbers.Remove(4);
Assert.AreEqual(3, aggregate.Value);
numbers.Reset(System.Linq.Enumerable.Range(2, 3).ToDictionary(i => i));
Assert.AreEqual(4, aggregate.Value);
}
