public void CanGetInstancesDefaultValue()
{
var tested = new AttachedPropertyContext();
var attachedProperty = new AttachedProperty <object, int>("PropertyName", tested);
var instance = new object();
instance.SetAttachedValue(attachedProperty, default(int), tested);
var instances = tested.GetInstances();
Assert.Equal(0, instances.Count);
}
public void CanGetInstancesNoReference()
{
var tested = new AttachedPropertyContext();
var attachedProperty = new AttachedProperty <object, int>("PropertyName", tested);
var instance = new object();
instance.SetAttachedValue(attachedProperty, 1, tested);
instance = null;
GC.Collect(0, GCCollectionMode.Forced, true);
var instances = tested.GetInstances();
Assert.Null(instance);
Assert.Equal(0, instances.Count);
}
public void CanGetInstances()
{
var tested = new AttachedPropertyContext();
var attachedProperty = new AttachedProperty <object, int>("PropertyName", tested);
var instance = new object();
instance.SetAttachedValue(attachedProperty, 1, tested);
var instances = tested.GetInstances();
Assert.Equal(1, instances.Count);
Assert.All(instances, x =>
{
Assert.Same(instance, x);
});
}