Monday, January 4, 2010

Stored Procedures

Stored Procedures

I am writing Informix SQL stored procedures at work right now. (Make that Deformix SQL--they seem to have twisted the definition of SQL in ugly ways.) I decided to write automated regression tests for these procedures before I started trying to test and debug the whole collection--and I'm glad that I did.

I found as I wrote detailed unit tests that there were bugs in the code that were easier to find and fix through unit test, rather than all at once. I also found situations that I found in unit test that would have been a lot harder to figure out as a complete process. For example, I discovered that there were customer records that did not have a corresponding record in the customer account table. Anyway, I think the net effect is that writing the unit tests before testing everything is more efficient.

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