How Facebook Automatically Tests Code: PHPUnit & Watir

Yesterday an interesting question appeared on Quora in which a user was wondering what forms of automated testing Facebook uses. Steven Grimm, Facebook’s test engineering tech lead, jumped in and provided a pretty comprehensive response. For non-programmers, be warned that his response is completely technical. However given that it was in response to a technical question, it provides superb insight for software developers.

Sten Grim gave the following response when asked about the form of automated testing completed by Facebook:

  • For our PHP code, we have a suite of over 1500 test classes using the PHPUnit framework.
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