Simon Willison’s Weblog

15th February 2007 - Link Blog

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

New release of LLM adds support for reasoning traces, OpenAI Responses, server-side tools, and smarter logging - 4th August 2026
Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp) - 31st July 2026
OpenAI’s accidental cyberattack against Hugging Face is science fiction that happened - 22nd July 2026

This is a link post by Simon Willison, posted on 15th February 2007.

assertselect 1 css 237 rails 111 testing 93

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe