Databases
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    <p>When a test executes against a database through another piece of code it ceases to be an unit test. It is called an "<a href="http://en.wikipedia.org/wiki/Integration_testing" rel="nofollow noreferrer">integration test</a>" because you are testing the interactions of different pieces of code and how they "integrate" together. Not that it really matters, but its fun to know.</p> <p>When you perform a test, the following things should occur:</p> <ol> <li>Begin a db transaction</li> <li>Insert known (possibly bogus) test items/entities</li> <li>Call the (one and only one) function to be tested</li> <li>Test the results</li> <li>Rollback the transaction</li> </ol> <p>These things should happen for each and every test. With NUnit, you can get away with writing step 1 and 5 just once in a base class and then inheriting from that in each test class. NUnit will execute Setup and Teardown decorated methods in a base class.</p> <p>In step 2, if you're using SQL, you'll have to write your queries such that they return the PK numbers back to your test code.</p> <pre><code>INSERT INTO Person(FirstName, LastName) VALUES ('Fred', 'Flintstone'); SELECT SCOPE_IDENTITY(); --SQL Server example, other db vendors vary on this. </code></pre> <p>Then you can do this</p> <pre><code>INSERT INTO Person(FirstName, LastName, SpouseId) VALUES('Wilma', 'Flintstone', @husbandId); SET @wifeId = SCOPE_IDENTITY(); UPDATE Person SET SpouseId = @wifeId WHERE Person.Id = @husbandId; SELECT @wifeId; </code></pre> <p>or whatever else you need.</p> <p>In step 4, if you use SQL, you have to re-SELECT your data and test the values returned.</p> <p>Steps 2 and 4 are less complicated if you are lucky enough to be able to use a decent ORM like (N)Hibernate (or whatever).</p>
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    1. POUnit Testing & Primary Keys
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    1. COI don't need to test the database. I know that works
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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