public void ExpressionlessSourceManipulation()
{
var numbers = new ObservableDictionary <int, int>(System.Linq.Enumerable.Range(0, 10).ToDictionary(i => i));
using (var query = numbers.ActiveFirst())
{
Assert.IsNull(query.OperationFault);
Assert.AreEqual(0, query.Value.Value);
numbers.Remove(0);
Assert.AreEqual(1, query.Value.Value);
numbers.Clear();
Assert.IsNotNull(query.OperationFault);
Assert.AreEqual(0, query.Value.Value);
numbers.Add(30, 30);
Assert.IsNull(query.OperationFault);
Assert.AreEqual(30, query.Value.Value);
numbers.Reset(new Dictionary <int, int> {
{ 15, 15 }
});
Assert.IsNull(query.OperationFault);
Assert.AreEqual(15, query.Value.Value);
numbers.Remove(15);
Assert.IsNotNull(query.OperationFault);
Assert.AreEqual(0, query.Value.Value);
}
}
public void ExpressionlessEmptySource()
{
var numbers = new ObservableDictionary <int, int>();
using var query = numbers.ActiveFirst();
Assert.IsNotNull(query.OperationFault);
Assert.AreEqual(0, query.Value.Value);
}
public void SourceManipulation()
{
var numbers = new ObservableDictionary <int, int>(Enumerable.Range(0, 10).ToDictionary(i => i));
using var query = numbers.ActiveFirst((key, value) => value % 3 == 0);
Assert.IsNull(query.OperationFault);
Assert.AreEqual(0, query.Value.Value);
numbers.Remove(0);
Assert.AreEqual(3, query.Value.Value);
numbers.RemoveAll((key, value) => value % 3 == 0);
Assert.IsNotNull(query.OperationFault);
Assert.AreEqual(0, query.Value.Value);
numbers.Add(30, 30);
Assert.IsNull(query.OperationFault);
Assert.AreEqual(30, query.Value.Value);
}