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.
npx agentmods add skills/fattain-naime/engineering-docs/test-strategy-documentnpx skills add fattain-naime/engineering-docs --skill test-strategy-documentgit clone --depth 1 https://github.com/fattain-naime/engineering-docsWhat 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 | $0.00062 | $0.03426 |
| Opus 5 | $0.00031 | $0.01713 |
| Sonnet 5 | $0.00012 | $0.00685 |
| Haiku 4.5 | $0.00006 | $0.00343 |
Grade A, and why
test-strategy-document 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Purpose
Produce a testing strategy document (test-strategy.md) that details the quality assurance processes, testing layers, test environments, and automated pipeline rules of a software project. This ensures development and QA teams test systematically and maintain high software reliability.
Input
Works best with: The name or description of the product/service, along with target quality goals. Also valuable: Codebase tech stack, critical integrations (e.g. payment processors, external APIs), test runners in use (e.g. PHPUnit, Vitest, Playwright), CI/CD runner environments.
Example invocation: Create a testing strategy for our ledger-based payment processing module. It is built in PHP 8.3 with PHPUnit. It connects to the bank gateway via API and updates database tables. Needs unit tests with database mocks, integration tests with Docker DB fixtures, and E2E checkout runs using Playwright. Target coverage is 80% on the core domain.
Key Concepts
1. The Agile Testing Pyramid
Distribute tests to optimize run speed and coverage:
- Unit Tests (Base, ~70%): Test isolated components, helper classes, and domain logic. Run in milliseconds. External calls are mocked out.
- Integration Tests (Middle, ~20%): Test the interaction between components, repositories, and database schemas. Connect to a local test database or simulated service.
- End-to-End (E2E) Tests (Top, ~10%): Test the entire application flow through the user interface (e.g. browser automation) from start to finish. Connect to a staging environment.
2. Mocking Boundaries (Test Doubles)
- Mocks: Verify behavior by asserting specific calls are made to external interfaces.
- Stubs: Provide hardcoded values for queries to isolate components.
- Fakes: Simplified working implementations (e.g. SQLite in-memory database for testing repository interfaces).
- Never mock what you do not own: Only mock interfaces within your boundary; use mock servers (e.g. WireMock) or official sandbox endpoints for third-party vendor APIs.
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.
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.
- 2d ago First seen · 232 lines · 62 tokens per session scan A 6076590790a2
test-strategy-document is a skill published in the GitHub repository fattain-naime/engineering-docs (4 stars, last pushed 17d ago), licensed MIT. It adds 62 tokens to every session and 3,426 once invoked, about $0.0003 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 2026-08-31.
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