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    <blockquote> <p>What are the best practices in database unit testing? </p> </blockquote> <p>The <a href="http://dbunit.sourceforge.net/" rel="noreferrer">DbUnit</a> framework (a testing framework allowing to put a database in a know state and to perform assertion against its content) has a page listing database testing <a href="http://dbunit.sourceforge.net/bestpractices.html" rel="noreferrer">best practices</a> that, to my experience, are true.</p> <blockquote> <p>What are the primary concerns when doing db unit testing</p> </blockquote> <ul> <li>Creating an up to date schema, managing schema changes</li> <li>Setting up data (reference data, test data) and <strong>maintaining</strong> test data</li> <li>Keeping tests independent</li> <li>Allowing developers to work concurrently</li> <li>Speed (tests involving database are typically slower and will make your whole build take more time)</li> </ul> <blockquote> <p>and how to do it "right"?</p> </blockquote> <p>As hinted, follow known good practices and use dedicated tools/frameworks:</p> <ul> <li>Prefer in memory database if possible (for speed)</li> <li>Use one schema per developer is a must (to allow concurrent work)</li> <li>Use a "database migration" tool (à la RoR) to manage schema changes and update a schema to the ultimate version</li> <li>Build or use a test harness allowing to put the database in a known state before each test and to perform asserts against the data after the execution (or to run tests inside a transaction that you rollback at the end of the test).</li> </ul>
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    1. POHow to do database unit testing?
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    1. USFranck Dernoncourt
    1. USPascal Thivent
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    1. COGood insight (+1) I will show a presentation about DB Unit Testing and your answer show nice patterns
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      1. USArthur Ronald
    2. CO@Arthur Thanks. I'm sure this will be a nice presentation, this is an interesting topic. Personally, I like to use [Unitils](http://unitils.sourceforge.net/summary.html) and DbUnit, they provide very good support for the above patterns.
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    3. COThank you for Unitils and DBUnit best practices link
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