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Unit testing is a well-known practice that helps developers validate the functionality of components and identify bugs early when they are easy to fix. By leveraging frameworks like JUnit, unit tests are very easy to write and execute, and therefore provides one with very rapid feedback about the status of the system. The problem with unit tests by themselves is that they test such fine-grained pieces of functionality that it is easy to end up with gaps in coverage for the system overall. And, because unit tests are strictly a developer tool, any miscommunication or misunderstanding about requirements cannot be caught, and the business users have no visibility into these tests.

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Format:HTML
Date:Jul 2007

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