THE ANATOMY OF A PRODUCTION HARNESS (COMPONENT MAP)

LEARNING GOALS By the end of this chapter you will be able to name the eight core components of a typical production harness. You will understand what each component does and what goes wrong when it is missing. You will be able to follow the order in which the components act during one pass of the loop. You will understand why a whole harness can be described, at heart, as a while-loop with a tool registry and a permission layer.