As feature developers write functional code and test developers write test code, a third concern rears its head: that of the user. Clearly in our perfect utopian testing world, this task should fall on a third class of engineer with the feature developers and test developers gainfully occupied elsewhere. Let’s call this newcomer a user developer. User-oriented tasks like use cases, user stories, user scenarios, exploratory testing, and so on are the order of business here. User developers concern themselves with how the features tie together and form an integrated whole. They work on systemwide issues and generally take the view of the user when asking whether the sum of the parts is actually something useful to a real community...
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