5. A unit test data processing system configured for fault alerting in mock object supported unit testing, the system comprising: a host computing system with at least one computer with at least one processor and memory; a plurality of objects of an application executing in the memory of the host computing system; and, at least one mock object proxying in the memory of the host computing system method calls to a corresponding one of the objects of the application, the mock object comprising program code enabled to proxy by method name an invocation of a method in the object under test, to determine whether or not a method exists in memory for the mock object corresponding to the method name, and to invoke an exception handler for the mock object outputting error text indicating a non-presence of a method associated with the method name responsive to a method by the method name not existing in the memory for the mock object, but otherwise to invoke a method that exists in the memory of the mock object corresponding to the method name; determining whether or not the method exists in memory for the mock object corresponding to the method name and a method signature.
7. The system of claim 5 , wherein the mock object provides for a static factory method creating instances of the mock object.