go-testing

go-testing is a skill for Claude Code, Codex from Gentleman-Programming/gentle-ai. It costs 26 tokens per session (487 once invoked), scanned A, original, MIT.

A set of guidelines for testing Go programs, including terminal interfaces built with Bubble Tea. It recommends tests that check observable behaviour, state changes, files, errors, and rendered output.

In plain words
What is it for?
Use it when writing Go tests, testing Bubble Tea updates, handling temporary files, checking command boundaries, or updating deterministic golden files.
Why use it?
It helps developers choose focused, repeatable tests instead of relying on fragile implementation details or real user directories.

Skill for Claude CodeCodex

About the project

Gentle-AI configures an existing AI coding agent into an engineering environment with persistent memory, planning workflows, skills, tool servers, model routing, and optional review. Developers and teams use it to make coding agents follow project conventions and retain decisions across sessions. The catalogue entries are its skills, commands, agents, and instruction.

Gentleman-Programming/gentle-ai · 6,255 stars · on GitHub

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/gentleman-programming/gentle-ai/go-testing
Any agent
npx skills add Gentleman-Programming/gentle-ai --skill go-testing
Clone the repo
git clone --depth 1 https://github.com/Gentleman-Programming/gentle-ai

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for go-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/gentleman-programming/gentle-ai/go-testing.svg)](https://agentmods.dev/skills/gentleman-programming/gentle-ai/go-testing)
Your own site
<a href="https://agentmods.dev/skills/gentleman-programming/gentle-ai/go-testing"><img src="https://agentmods.dev/badge/skills/gentleman-programming/gentle-ai/go-testing.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 487 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00026 $0.00487
Opus 5 $0.00013 $0.00244
Sonnet 5 $0.00005 $0.00097
Haiku 4.5 $0.00003 $0.00049

Measured 5d ago against content hash 87205f2eff2f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

go-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

internal/assets/skills/go-testing/SKILL.md · 52 lines

What it actually says

Activation Contract

Load this skill when writing or reviewing Go tests, adding coverage, testing Bubbletea/TUI flows, using teatest, or updating golden files.

Hard Rules

  • Prefer table-driven tests for multiple cases; use t.Run(tt.name, ...).
  • Test behavior and state transitions, not implementation trivia.
  • Use t.TempDir() for filesystem tests; never rely on a real home directory.
  • Keep integration tests skippable with testing.Short() when they run external commands or slow flows.
  • For Bubbletea, test Model.Update() directly for state changes; use teatest only for interactive flows.
  • Golden files must be deterministic; update only through the repo's -update path and rerun tests without -update.
  • Use small mocks/interfaces around system or command execution boundaries.

Decision Gates

Target Test pattern
Pure function or parser Table-driven unit test.
Error behavior Explicit success and failure cases.
File operations t.TempDir() plus focused assertions.
TUI state transition Direct Model.Update() call with tea.Msg.
Full TUI interaction teatest.NewTestModel().
Rendered output Golden file test.
Real external command Integration test; skip in -short.

Execution Steps

  1. Identify behavior under test and the smallest public boundary that proves it.
  2. Choose the test pattern from the decision gate.
  3. Name cases by scenario, not input mechanics.
  4. Assert outputs, errors, state, and side effects explicitly.
  5. Run the narrow package test first, then the relevant broader suite.
  6. For golden updates: run with -update, inspect diff, then rerun without -update.

Output Contract

Report test files changed, scenarios covered, commands executed, golden files updated, and any skipped integration scope.

References

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 52 lines · 26 tokens per session scan A 87205f2eff2f

Subscribe to this mod's changes

go-testing is a skill published in the GitHub repository Gentleman-Programming/gentle-ai (6,255 stars, last pushed today), licensed MIT. It adds 26 tokens to every session and 487 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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