public void FilteredEventHandlerUsingCombinedFilter_TransformsEventsLocally()
{
// prepare event handler
var handledValue = default(SampleEventArgs);
var handler = new EventHandler <SampleEventArgs>((sender, args) => handledValue = args);
// attach client-side event filter
var sample = new SampleServer();
sample.SampleEvent += handler
.AddFilter(new SampleEventFilter(321, 123, 111))
.AddFilter(new SampleEventFilter(333, 123, 222)); // 123 will pass both filters
// raise events, check results
sample.RaiseSampleEvent(321); // filtered out
Assert.IsNull(handledValue);
sample.RaiseSampleEvent(123);
Assert.IsNotNull(handledValue);
Assert.AreEqual(123, handledValue.Value);
Assert.IsTrue(handledValue.IsTransformed);
handledValue.Value = 111;
sample.RaiseSampleEvent(456); // filtered out
Assert.AreEqual(111, handledValue.Value);
}
public void FilteredEventHandlerUsingFactorySyntax_FiltersEventsLocally()
{
// prepare event handler, attach event filter
var handledValue = 0;
var sample = new SampleServer();
sample.SampleEvent += FilteredEventHandler.Create((object sender, SampleEventArgs args) => handledValue = args.Value, new SampleEventFilter(321));
// raise events, check results
sample.RaiseSampleEvent(123); // filtered out
Assert.AreEqual(0, handledValue);
sample.RaiseSampleEvent(321);
Assert.AreEqual(321, handledValue);
handledValue = 111;
sample.RaiseSampleEvent(456); // filtered out
Assert.AreEqual(111, handledValue);
}
public void FilteredEventHandlerUsingFlexibleFilter_FiltersEventsLocally()
{
// prepare event handler
var handledValue = 0;
var handler = new EventHandler <SampleEventArgs>((sender, args) => handledValue = args.Value);
// attach client-side event filter
var sample = new SampleServer();
sample.SampleEvent += handler.AddFilter((f, args) => args.Value == 123);
// raise events, check results
sample.RaiseSampleEvent(321); // filtered out
Assert.AreEqual(0, handledValue);
sample.RaiseSampleEvent(123);
Assert.AreEqual(123, handledValue);
handledValue = 111;
sample.RaiseSampleEvent(456); // filtered out
Assert.AreEqual(111, handledValue);
}
