public void Notifies()
{
var count = 0;
var fake1 = new Fake {
IsTrue = false
};
var fake2 = new Fake {
IsTrue = false
};
var fake3 = new Fake {
IsTrue = false
};
using (var condition1 = new Condition(fake1.ObservePropertyChanged(x => x.IsTrue), () => fake1.IsTrue))
{
using (var condition2 = new Condition(fake2.ObservePropertyChanged(x => x.IsTrue), () => fake2.IsTrue))
{
using (var condition3 = new Condition(fake3.ObservePropertyChanged(x => x.IsTrue), () => fake3.IsTrue))
{
using (var collection = new OrCondition(condition1, condition2, condition3))
{
using (collection.ObserveIsSatisfiedChanged()
.Subscribe(_ => count++))
{
Assert.AreEqual(false, collection.IsSatisfied);
fake1.IsTrue = !fake1.IsTrue;
Assert.AreEqual(true, collection.IsSatisfied);
Assert.AreEqual(1, count);
fake2.IsTrue = !fake2.IsTrue;
Assert.AreEqual(true, collection.IsSatisfied);
Assert.AreEqual(1, count);
fake3.IsTrue = !fake3.IsTrue;
Assert.AreEqual(true, collection.IsSatisfied);
Assert.AreEqual(1, count);
fake1.IsTrue = !fake1.IsTrue;
Assert.AreEqual(true, collection.IsSatisfied);
Assert.AreEqual(1, count);
fake2.IsTrue = !fake2.IsTrue;
Assert.AreEqual(true, collection.IsSatisfied);
Assert.AreEqual(1, count);
fake3.IsTrue = !fake3.IsTrue;
Assert.AreEqual(false, collection.IsSatisfied);
Assert.AreEqual(2, count);
}
}
}
}
}
}
public void DynamicList()
{
var conditions = new ObservableCollection <ICondition>();
using (var condition = new OrCondition(conditions, leaveOpen: true))
{
var actuals = new List <bool?>();
using (condition.ObserveIsSatisfiedChanged()
.Subscribe(c => actuals.Add(c.IsSatisfied)))
{
var preRequisiteChanges = 0;
using (condition.ObservePropertyChangedSlim(x => x.Prerequisites, signalInitial: false)
.Subscribe(x => preRequisiteChanges++))
{
Assert.AreEqual(0, preRequisiteChanges);
CollectionAssert.IsEmpty(condition.Prerequisites);
Assert.AreSame(condition.Prerequisites, condition.Prerequisites);
Assert.AreEqual(null, condition.IsSatisfied);
CollectionAssert.IsEmpty(actuals);
Assert.AreEqual(null, condition.IsSatisfied);
conditions.Add(Mock.Of <ICondition>(x => x.IsSatisfied == true));
Assert.AreEqual(true, condition.IsSatisfied);
CollectionAssert.AreEqual(new[] { true }, actuals);
Assert.AreEqual(1, preRequisiteChanges);
CollectionAssert.AreEqual(conditions, condition.Prerequisites);
Assert.AreSame(condition.Prerequisites, condition.Prerequisites);
Mock.Get(conditions[0]).SetupGet(x => x.IsSatisfied).Returns(false);
Mock.Get(conditions[0]).Raise(x => x.PropertyChanged += null, new PropertyChangedEventArgs("IsSatisfied"));
Assert.AreEqual(false, condition.IsSatisfied);
CollectionAssert.AreEqual(new[] { true, false }, actuals);
Assert.AreEqual(1, preRequisiteChanges);
CollectionAssert.AreEqual(conditions, condition.Prerequisites);
Assert.AreSame(condition.Prerequisites, condition.Prerequisites);
}
}
}
}