Company
Date Published
Author
Gleb Bahmutov
Word count
1388
Language
English
Hacker News points
None

Summary

The blog post by Gleb Bahmutov explores a common issue faced by users of the Cypress end-to-end testing framework, specifically regarding the cy.click() command not behaving as expected. Using an example web application with a calendar modal, Bahmutov details how the command can fail due to a race condition where Cypress executes actions faster than the application can attach event listeners. While manually clicking works, the automated test fails because the click event is not registered in time to close the modal. The solution involves adding a manual wait to allow the application to catch up, but this is discouraged due to potential flakiness and test slowdown. Instead, the post introduces the cypress-pipe plugin, which allows for retrying user actions until the desired application state is achieved, thus ensuring the test passes by closing the modal once all event listeners are attached. The author emphasizes that while this method works in some cases, it is not universally applicable, especially if repeated actions have unintended side effects, and underscores the necessity of understanding the application’s intended behavior when writing tests.