public void TestPeekWithDeferEvaluation()
{
int timesEvaluated = 0;
var computed = new ComputedObservable<int>(() =>
{
timesEvaluated++;
return 123;
},
true);
Assert.AreEqual(0, timesEvaluated);
Assert.AreEqual(123, computed.Peek());
Assert.AreEqual(123, computed.Peek());
Assert.AreEqual(1, timesEvaluated);
}
public void TestPeekComputed()
{
var underlyingProperty = new ObservableProperty<int>(1);
var computed1 = new ComputedObservable<int>(() => 1 + underlyingProperty);
var computed2 = new ComputedObservable<int>(() => 1 + computed1.Peek());
Assert.AreEqual(3, computed2.Value);
Assert.AreEqual(0, computed2.DependencyCount);
underlyingProperty.Value = 11;
Assert.AreEqual(3, computed2.Value);
}