public void Event_on_a_subproperty_shall_be_removed_and_readded_if_subproperty_is_changed()
{
TestObject SubProperty1 = new TestObject();
TestObject SubProperty2 = new TestObject();
TestObject TestObject = new TestObject {
SubProperty = SubProperty1
};
TestProxy3 TestProxy = new TestProxy3(TestObject);
bool EventCalled;
TestProxy.PropertyChanged += (_, args) => EventCalled = args.PropertyName == "Property";
TestObject.SubProperty = SubProperty2;
EventCalled = false;
TestProxy.Property.ToString(); //For lazy & OnDemand
//old subproperty shall be removed
SubProperty1.Property = 42;
Assert.IsFalse(EventCalled);
TestProxy.Property.ToString(); //For lazy & OnDemand
//new subproperty shall be added
SubProperty2.Property = 42;
Assert.IsTrue(EventCalled);
TestProxy.Property.ToString(); //For lazy & OnDemand
//shall work if new value is null
TestObject.SubProperty = null;
Assert.Throws <NullReferenceException>(() => TestProxy.Property.ToString());
}
public void Event_shall_be_routed_through_proxy_on_subproperty()
{
bool EventCalled = false;
TestObject TestObject = new TestObject {
SubProperty = new TestObject()
};
TestProxy3 TestProxy = new TestProxy3(TestObject);
TestProxy.PropertyChanged += (_, args) => EventCalled = args.PropertyName == "Property";
TestProxy.Property.ToString(); //For lazy & OnDemand
TestObject.SubProperty.Property = 42;
Assert.IsTrue(EventCalled);
Assert.AreEqual(42, TestProxy.Property);
}
