public void UpdatesNextSourceOnPropertyChange()
{
var fakeInpc = new Fake {
Next = new Level {
Name = "1"
}
};
var rootItem = new RootItem(fakeInpc);
var nextName = NameOf.Property <Fake>(x => x.Next);
var nextProp = typeof(Fake).GetProperty(nextName);
var firstProperty = new PathProperty(null, nextProp);
var first = new NotifyingPathItem(rootItem, firstProperty);
var isTrueName = NameOf.Property <Level>(x => x.IsTrue);
var isTrueProp = typeof(Level).GetProperty(isTrueName);
var secondProperty = new PathProperty(firstProperty, isTrueProp);
var second = new NotifyingPathItem(first, secondProperty);
Assert.AreSame(fakeInpc.Next, second.Source);
fakeInpc.Next = new Level {
Name = "2"
};
Assert.AreSame(fakeInpc.Next, second.Source);
}
public void ThrowsOnSettingSourceToWrongType()
{
var propertyName = NameOf.Property <Fake>(x => x.IsTrue);
var propertyInfo = typeof(Fake).GetProperty(propertyName);
var pathItem = new NotifyingPathItem(null, new PathProperty(null, propertyInfo));
Assert.Throws <TargetException>(() => pathItem.Source = new StructLevel());
}
public void SetSourceToIncorrectTypeThrows()
{
var propertyName = NameOf.Property <Fake>(x => x.IsTrue);
var propertyInfo = typeof(Fake).GetProperty(propertyName);
var level = new Level();
var pathItem = new NotifyingPathItem(null, new PathProperty(null, propertyInfo));
Assert.Throws <TargetException>(() => pathItem.Source = level);
}
public void SetSourceToSubtype()
{
var propertyName = NameOf.Property <IFake>(x => x.IsTrue);
var propertyInfo = typeof(IFake).GetProperty(propertyName);
var fakeInpc = new Fake();
var pathItem = new NotifyingPathItem(null, new PathProperty(null, propertyInfo));
pathItem.Source = fakeInpc;
Assert.AreSame(fakeInpc, pathItem.Source); // Really just scheking that we don't throw here
}
public void ThrowsOnNotINotifyPropertyChanged()
{
var propertyInfo = typeof(NotInpc).GetProperty(NameOf.Property <NotInpc>(x => x.Name));
Assert.NotNull(propertyInfo);
var pathItem = new PathProperty(null, propertyInfo);
var item = new NotifyingPathItem(null, pathItem);
Assert.Throws <ArgumentException>(() => new NotifyingPathItem(item, pathItem));
}
public void ThrowsOnStruct()
{
var propertyInfo = typeof(StructLevel).GetProperty(NameOf.Property <StructLevel>(x => x.Name));
Assert.NotNull(propertyInfo);
var pathItem = new PathProperty(null, propertyInfo);
var item = new NotifyingPathItem(null, pathItem);
Assert.Throws <ArgumentException>(() => new NotifyingPathItem(item, pathItem));
}
public void DoesNotNotifyOnNewNullSourceWhenPropGoesFromNullToNull()
{
var propertyName = NameOf.Property <Fake>(x => x.Name);
var propertyInfo = typeof(Fake).GetProperty(propertyName);
var fakeInpc = new Fake();
var pathItem = new NotifyingPathItem(null, new PathProperty(null, propertyInfo));
pathItem.ObservePropertyChanged().Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
pathItem.Source = null;
Assert.AreEqual(0, _changes.Count);
}
public void NotifiesOnSourcePropertyChangedEvent(string eventArgsPropName)
{
var propertyName = NameOf.Property <Fake>(x => x.IsTrue);
var propertyInfo = typeof(Fake).GetProperty(propertyName);
var fakeInpc = new Fake();
var pathItem = new NotifyingPathItem(null, new PathProperty(null, propertyInfo));
pathItem.Source = fakeInpc;
pathItem.ObservePropertyChanged().Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
fakeInpc.OnPropertyChanged(eventArgsPropName);
Assert.AreEqual(1, _changes.Count);
Assert.AreEqual(eventArgsPropName, _changes.Single().EventArgs.PropertyName);
Assert.AreSame(fakeInpc, _changes.Single().Sender);
}
public void NotifiesOnSourceChangeAffectingPropByBeingSetToNull()
{
var propertyName = NameOf.Property <Fake>(x => x.IsTrue);
var propertyInfo = typeof(Fake).GetProperty(propertyName);
var fakeInpc = new Fake();
var pathItem = new NotifyingPathItem(null, new PathProperty(null, propertyInfo));
pathItem.Source = fakeInpc;
pathItem.ObservePropertyChanged().Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
pathItem.Source = null;
Assert.AreEqual(1, _changes.Count);
Assert.AreEqual(propertyName, _changes.Single().EventArgs.PropertyName);
Assert.AreSame(null, _changes.Single().Sender);
}
public void NotifiesOnNewSourceWhenPropGoesFromTrueToTrue()
{
var propertyName = NameOf.Property <Fake>(x => x.IsTrue);
var propertyInfo = typeof(Fake).GetProperty(propertyName);
var fakeInpc = new Fake {
IsTrue = true
};
var pathItem = new NotifyingPathItem(null, new PathProperty(null, propertyInfo));
pathItem.ObservePropertyChanged().Subscribe(_changes.Add);
Assert.AreEqual(0, _changes.Count);
pathItem.Source = fakeInpc;
Assert.AreEqual(1, _changes.Count);
pathItem.Source = new Fake {
IsTrue = true
};
Assert.AreEqual(2, _changes.Count);
}
