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Re: [TDD] TDD Database migration code


 

Ideally I'm looking for something that creates databases, runs sql, is able to check the state of the database, and then destroys the database.

I don't really care at what level that happens at. (Though easier is obviously better) ?.. (investigating pgtap now, thanks)

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On Wed, Apr 20, 2016 at 10:21 AM, Adam Sroka adam.sroka@... [testdrivendevelopment] <testdrivendevelopment@...> wrote:

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Are you talking about test driving database access code from a general purpose language? Or are you talking about test driving stuff inside the database engine? There is??but I would look for a way to do it at a higher level, unless... a gun was pointed at my head.?

On Tuesday, April 19, 2016, akessner@... [testdrivendevelopment] <testdrivendevelopment@...> wrote:

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My google searches are giving me bad results... :(

Does anyone know of any good articles, or have any good hints, on how to do TDD for writing PostgresSQL, or database code?

I need to write a custom system which allows us to do DB migrations and updates etc, a bit similar to what Ruby on Rails with has?their?DB rake:migration command.*

Google is mostly giving me information on how to abstract out DB objects, but I need to verify that my new custom migration system is actually working.

The tests I would want to write are simples
? ?1. Confirm that a migration file worked (say by adding a column)
? ?2. Confirm that only the latest migration was run, and not a previous one (say by checking a value in the table wasn't changed)

I appreciate the help you can provide.

*The short version is:
?1. A command which generates a .sql file with a timestamp in the file name.
? 2. A?command which checks all the files in a folder,?and then does some comparisons to another db, and picks one or more .sql files to run on the db in question.



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