Tutorial: Using mock objects to drive top-down development

Tim Mackinnon and Nat Pryce and Steve Freeman and I are presenting a session on how mock objects can be used to drive code from the top (requirements first, infrastructure last) to produce high quality, clean and decoupled object designs that allow for business change.

Come see us at:
* XPDay Benelux – Fri 21st Nov 2003, Breda, Netherlands
* XPDay London – Tue 2nd Dec 2003, London, UK.
* OT2004 – Tue 30 Mar 2004, Cambridge, UK.


Mock objects are usually regarded as a programming technique that merely supports existing methods of unit testing. But this does not exploit the full potential of mock objects. Fundamentally, mock objects enable an iterative, top-down development process that drives the creation of well designed object-oriented software.

This tutorial will demonstrate the mock object development process in action. We will show how using mock objects to guide your design results in a more effective form of test driven development and more flexible code; how mock objects allow you to concentrate more on end-user requirements than on infrastructure; and how the objects in the resultant code are small and oosely coupled, with well-defined responsibilities.

* Brief introduction to mock objects and the dynamic mock API.
* The mock object design process explained.
* Top down vs. bottom up design.
* What to mock. And what not.


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