Simon Willison’s Weblog

Mock - Mocking and Test Utilities (via) New mocking library for Python based on the “action ... assertion” pattern (as opposed to the more common “record ... replay”).

Posted 20th November 2007 at 11:30 pm

Recent articles

Nano Banana Pro aka gemini-3-pro-image-preview is the best available image generation model - 20th November 2025
How I automate my Substack newsletter with content from my blog - 19th November 2025
Trying out Gemini 3 Pro with audio transcription and a new pelican benchmark - 18th November 2025

mocking 2 python 1206 testing 64 unittests 13

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