chatGPT – building an automated database testing tool

Creating an automated database testing tool with ChatGPT

Last night I thought I’d try to get ChatGPT to make an automated database testing tool and the results were quite promising.

In conclusion, with guidance, it was able to build a project from scratch that ran a python script and postgres database. It generated some random schema and values for the randomly generated tables. It provided a Python script which would introspect the database and execute queries against it.

Did it all work out of the box? No. There are some bugs to fix in the python script it generated. However the effort to go in and fix those is not high and certainly the whole end-to-end process is cheaper, time-wise, compared to starting from scratch.

I found that the bugs it encountered were largely due to my lack of clarity or ordering of questions posed to it. It was quite capable of fixing its own mistakes / updating the existing code to match the new requirements when requested to do so.

The only real issue I encountered were general API errors that one would expect of something so popular in an early preview state.

I came away from this experiment viewing ChatGPT and whatever follows it as a really useful development aide for those who already know how to program. It helped me build a tool faster than I could have had I sat down to do it from scratch. I don’t view it as a replacement for software engineers yet for two main reasons – firstly: for non-trivial applications I suspect the person feeding requirements into the system (or “prompt engineer”) needs to have a reasonable idea of how to build software in the first place, so as to know how to form requests and to correct mistakes / close gaps. secondly: the code being generated isn’t always sound – without an experienced engineer reviewing and taking ownership of whatever code is produced (ownership being important for maintainence reasons) then there’s little guarantee that you will get what you are hoping for.

However; this is still very early days. Can the problems outlined be closed further? Absolutely. Will this sort of tooling be “bad” for software engineering as a whole, long-term? Perhaps. Personally I’m very excited to have this tool in my arsenal – already it has allowed me to scaffold prototype applications quickly. Would I use it for production code in a workplace? No more or less than I would snippets from stackoverflow or it’s ilk. For now.

Github repository: https://github.com/peter-mcconnell/gpt_sql_test_generator

Screenshots:

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