public bool AnyReferenceEquals(WeakReferenceTestObject other)
{
if (object.ReferenceEquals(this, other)) return true;
if (object.ReferenceEquals(this.Parent, other.Parent) && !object.ReferenceEquals(this.Parent, null)) return true;
if (object.ReferenceEquals(this.Children, other.Children) && !object.ReferenceEquals(this.Children, null)) return true;
if (this.Children.Zip(other.Children, (a, b) => a.AnyReferenceEquals(b)).Contains(true)) return true;
return false;
}
void ICloneExplicit.CopyDataTo(object target, ICloneOperation operation)
{
operation.HandleObject(this, target);
// If the source objects parent was cloned as well, assign its
// cloned instance to our target object.
WeakReferenceTestObject testTarget = target as WeakReferenceTestObject;
testTarget.Parent = operation.GetWeakTarget(this.Parent);
}
public bool AnyReferenceEquals(WeakReferenceTestObject other)
{
if (object.ReferenceEquals(this, other))
{
return(true);
}
if (object.ReferenceEquals(this.Parent, other.Parent) && !object.ReferenceEquals(this.Parent, null))
{
return(true);
}
if (object.ReferenceEquals(this.Children, other.Children) && !object.ReferenceEquals(this.Children, null))
{
return(true);
}
if (this.Children.Zip(other.Children, (a, b) => a.AnyReferenceEquals(b)).Contains(true))
{
return(true);
}
return(false);
}
[Test] public void WeakReferenceBehavior()
{
WeakReferenceTestObject data = new WeakReferenceTestObject(new[]
{
new WeakReferenceTestObject(),
new WeakReferenceTestObject(new[]
{
new WeakReferenceTestObject(),
new WeakReferenceTestObject()
})
});
WeakReferenceTestObject dataPart = data.Children[1];
// Clone the full graph and see if its complete
{
WeakReferenceTestObject dataResultFull = data.DeepClone();
Assert.AreSame(null, dataResultFull.Parent);
Assert.AreEqual(2, dataResultFull.Children.Count);
Assert.AreEqual(2, dataResultFull.Children[1].Children.Count);
Assert.IsTrue(dataResultFull.CheckChildIntegrity());
Assert.IsFalse(data.AnyReferenceEquals(dataResultFull));
}
// Clone part of the graph and see if the right parts are missing
{
WeakReferenceTestObject dataResultPart = dataPart.DeepClone();
Assert.AreSame(null, dataResultPart.Parent);
Assert.AreEqual(2, dataResultPart.Children.Count);
Assert.IsTrue(dataResultPart.CheckChildIntegrity());
Assert.IsFalse(dataPart.AnyReferenceEquals(dataResultPart));
}
}
