# Writing | Manveen Singh

What I tried, what broke, what fixed it.

## [How I test an n8n workflow before it goes live](https://manveen.me/writing/149-tests-for-a-few-slack-buttons.md)

25 October 2026 · 3 min read

My task tracker is a few Slack buttons and two n8n workflows. It has 149 tests. That's because my email scheduler once said Success every day for a week and sent nothing.

Full title: 149 tests for a few Slack buttons

## [Marking the AI's homework](https://manveen.me/writing/marking-the-ais-homework.md)

Marked 26 Sep 2026 · 2 min read

Can an AI fill in a price quote from an engineering drawing? I answered 23 real drawings myself first, then marked its work.

## [Things AI got confidently wrong](https://manveen.me/writing/things-ai-got-confidently-wrong.md)

Last entry 19 Sep 2026 · 2 min read

Pinned here so I don't forget them. Each one came back sounding sure of itself, and each one changed what I check.

## [How I caught my own AI test cheating, and why the lower score is the one I trust](https://manveen.me/writing/schema-as-eval-spec.md)

14 June 2026 · 2 min read

My AI judge caught all 11 fake AI jobs in my test. My own notes in the test data were giving it the answers. Without them, it caught 9.

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