Simon Willison’s Weblog

Rails 1.2.1 Impression. I hadn’t seen assert_select before, which lets you unit test generated HTML using CSS selectors; a really neat idea.

Posted 15th February 2007 at 9:14 am

Recent articles

LLM predictions for 2026, shared with Oxide and Friends - 8th January 2026
Introducing gisthost.github.io - 1st January 2026
2025: The year in LLMs - 31st December 2025

assertselect 1 css 231 rails 74 unittests 13

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