public void Remove()
{
var valueCollected = new booleanWrapper();
var keyCollected = new booleanWrapper();
var dict = new WeakReferenceDictionary <VisiblyGarbageCollectedObject, VisiblyGarbageCollectedObject>(ReferenceEqualityComparer.Instance);
addKeyAndValueWrappersToDict();
GC.Collect(); // collects the key
dict.Clean(); // removes the last reference to the value
waitForGC();
Assert.IsTrue(keyCollected);
Assert.IsFalse(valueCollected);
GC.Collect(); // collects the value
waitForGC();
Assert.IsTrue(valueCollected);
void addKeyAndValueWrappersToDict()
{
dict.Add(VisiblyGarbageCollectedObject.Create(keyCollected), VisiblyGarbageCollectedObject.Create(valueCollected));
}
}
/// <summary>
/// Gets an object that represents the actual (serializable) view model of the specified object.
/// </summary>
public object GetOrCreateSubstitute(object obj)
{
Contract.Requires(obj != null, "Only non-null properties can be substituted");
// Contract.Requires(obj.GetType().IsClass, "Only reference types can be substituted");
if (!mappedObjects.TryGetValue(obj, out object substitute))
{
substitute = this.createSubstitute(obj);
mappedObjects.Add(obj, substitute);
}
return(substitute);
}