Thoroughly testing objects via registered handlers
In situations where you have deep trees of classes, there is a common situation in which you test a module 4 or 5 subclasses down, which should follow the correct behaviour of not just the subclass, but of all the parent classes.
This should be done to ensure that the implementation of a subclass has not somehow ``broken'' the object's behaviour in a more general sense.
Test::Object is a testing package designed to allow you to easily test what you believe is a valid object against the expected behaviour of all of the classes in its inheritance tree in one single call.
Validate package descriptions
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