What is go-testing-patterns?

A set of patterns for testing Go programs with Go's standard testing package. It covers table-driven tests, subtests, HTTP test servers, benchmarks, fuzz testing, helpers, and interface-based mocks.

Use it when writing or reviewing tests, benchmarks, fuzz tests, or HTTP tests in Go projects.

It helps you organize Go tests consistently and choose suitable techniques for different kinds of code. This makes tests easier to read and maintain.

go-testing-patterns — Skill for Claude Code by vladolaru

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.

Any agent

npx skills add vladolaru/claude-code-plugins --skill go-testing-patterns

Clone the repo

git clone --depth 1 https://github.com/vladolaru/claude-code-plugins

Made for: Claude Code.

Or install pirategoat-tools, the plugin that ships this one along with the rest of its 22 skills.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/vladolaru/claude-code-plugins/go-testing-patterns/github.svg)](https://agentmods.dev/skills/vladolaru/claude-code-plugins/go-testing-patterns)

Your own site

<a href="https://agentmods.dev/skills/vladolaru/claude-code-plugins/go-testing-patterns"><img src="https://agentmods.dev/badge/skills/vladolaru/claude-code-plugins/go-testing-patterns/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/vladolaru/claude-code-plugins/go-testing-patterns"><img src="https://agentmods.dev/badge/skills/vladolaru/claude-code-plugins/go-testing-patterns.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,176 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00040	$0.01176
Opus 5.5	$0.00016	$0.00470
Sonnet 5.5	$0.00008	$0.00235
Haiku 4.5	$0.00004	$0.00118

Measured 2mo ago against content hash 6cb63c782fb1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

go-testing-patterns 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 2mo 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.

plugins/pirategoat-tools/skills/go-testing-patterns/SKILL.md · 107 lines

How it starts

The opening of the file, as written. The whole thing — 107 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Directory

Resolve SKILL_DIR to the absolute directory containing this SKILL.md, as shown by the current host, before using any bundled path below. Before a shell command uses $SKILL_DIR, assign it in that command or replace it with the resolved path. It is not a host-exported environment variable.

Go Testing Patterns

Standard Go testing package patterns and common libraries. For shared test quality principles (philosophy, smells, mocking decisions), see testing-patterns.

Reference Routing

Need	Reference File	Sections to Read
Go testing patterns	`$SKILL_DIR/../testing-patterns/references/go-testing-patterns.md`	Full file (~420L, manageable)
Behavior vs implementation	`$SKILL_DIR/../testing-patterns/references/test-philosophy.md`	`## The Fundamental Shift` + `## Four Core Principles`
Flaky/brittle tests	`$SKILL_DIR/../testing-patterns/references/test-smells.md`	`## The Six Major Test Smells` (relevant subsection)
Mock usage decisions	`$SKILL_DIR/../testing-patterns/references/mocking-strategies.md`	`## The Mocking Decision Framework`
AAA pattern/naming	`$SKILL_DIR/../testing-patterns/references/test-structure.md`	`## The AAA Pattern` + `## Test Naming Conventions`
Test data strategy	`$SKILL_DIR/../testing-patterns/references/test-data.md`	`## Factories` + `## Builders`

How to read sections: Grep for heading to find line number, Read with offset+limit.

Go Assertion Quick Reference

Use	Instead Of	Why
`t.Fatalf("got %v, want %v", got, want)`	`t.Errorf` for preconditions	Stops test when continuing is meaningless
`require.NoError(t, err)`	`if err != nil { t.Fatal(err) }`	Concise with testify (optional)
`t.Run(tt.name, func(t *testing.T) {...})`	Flat loop body	Isolates cases, enables `-run` filtering
`t.Helper()`	Nothing	Failures point to caller, not helper
`t.Setenv("KEY", "val")`	`os.Setenv` + defer restore	Auto-restored, goroutine-safe
`t.TempDir()`	`os.MkdirTemp` + defer remove	Auto-cleaned after test
`t.Cleanup(fn)`	`defer fn()`	Runs even on `t.FailNow`/`t.Fatal`
`httptest.NewServer(handler)`	Real HTTP calls	Fast, deterministic, no network

Read the full file on GitHub · 107 lines

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.

2mo ago First seen · 107 lines · 40 tokens per session scan A 6cb63c782fb1

Subscribe to this mod's changes

go-testing-patterns is a skill published in the GitHub repository vladolaru/claude-code-plugins (8 stars, last pushed 5d ago), licensed MIT. It adds 40 tokens to every session and 1,176 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.

Go Languages Testing Unit testing

go-testing-patterns next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
go-testing-patternsvladolaru/claude-code-plugins	Skill	8	5d ago	MIT	A	40	Claude Code
golang-testingaffaan-m/ECC	Skill	301k	2d ago	MIT	A	37	Claude Code, Kiro
timeouts-and-asynconsi/ginkgo	Skill	9.1k	8d ago	MIT	A	106	Claude Code
setuponsi/ginkgo	Skill	9.1k	8d ago	MIT	A	118	Claude Code
golang-testingsamber/cc-skills-golang	Skill	3.8k	2d ago	MIT	A	115	Claude Code
golang-stretchr-testifysamber/cc-skills-golang	Skill	3.8k	2d ago	MIT	A	97	Claude Code
overviewonsi/ginkgo	Skill	9.1k	8d ago	MIT	A	84	Claude Code