Build Your Own Test Framework: A Practical Guide to Writing Better Automated Tests

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

D. IrvineBuild Your Own Test Frameworkhttps://doi.org/10.1007/978-1-4842-9247-1_14

14. Randomizing Tests

Daniel Irvine¹  

(1)

London, UK

 

No matter how experienced you are with test writing, it’s all too easy to inadvertently write interdependent tests that share state.

Shared state can mean global variables, database records, and so on.

Having interdependent tests can mean that your tests pass but only because of the setup or actions done in a previous test. You might think your test is working correctly, but in actual fact it’s not doing anything.

That can mean you end up with test failures or tests that don’t test what you think to do, because the Arrange phase ...