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Asked: 2026-05-11T00:31:08+00:00

I’ve been trying to push my mentallity when developing at home to be geared

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I’ve been trying to push my mentallity when developing at home to be geared more towards TDD and a bit DDD.

One thing I don’t understand though is why you would create a fake repository to test against? I haven’t really looked into it much but surely the idea of testing is to help decouple your code (giving you more flexability), trim down code needed and bring down the number of bugs.

So can someone fill in my foolish brain as to why some like to test fake repositories? I would have thought testing against a real database is a much better alternative to creating a fake one because then you KNOW that it works against your real world data store.

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  1. The fake repository allows you to test just your application code.

    The fake repository means an automated test can easily set up a known state in the repository.

    The fake repository will be several orders of magnitude faster than a real database.

    The fake repository is NOT a substitute for system testing that will include your database.

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