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A microtest has the following properties: It is short, typically under a dozen lines of code. It is *always* automated. It does not test the object inside the running app, but instead in a purpose-built testing application. It invokes only a tiny portion of the code, most usually a single branch of a single function. It never *reaches* inside an object’s boundaries, though the tester may certainly *look* inside them. It is coded to the same standard as shipping code, […]