What is unit-test-execution?

A tool for running unit tests, which check individual functions or components in isolation.

It helps run configured TypeScript or Python unit-test suites and produce test and coverage reports.

It shows whether small parts of the code work and records failures, skipped tests, flaky tests, and coverage.

unit-test-execution — Skill for Claude Code and Codex by paruff

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 paruff/uFawkesAI --skill unit-test-execution

Clone the repo

git clone --depth 1 https://github.com/paruff/uFawkesAI

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/paruff/ufawkesai/unit-test-execution/github.svg)](https://agentmods.dev/skills/paruff/ufawkesai/unit-test-execution)

Your own site

<a href="https://agentmods.dev/skills/paruff/ufawkesai/unit-test-execution"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/unit-test-execution/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/paruff/ufawkesai/unit-test-execution"><img src="https://agentmods.dev/badge/skills/paruff/ufawkesai/unit-test-execution.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 560 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.

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	$0.00028	$0.00560
Opus 5	$0.00014	$0.00280
Sonnet 5	$0.00006	$0.00112
Haiku 4.5	$0.00003	$0.00056

Measured 8d ago against content hash ad1e077f7f39, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

unit-test-execution 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 8d 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.

.agents/skills/test-execution/unit-test-execution/SKILL.md · 94 lines

What it actually says

Skill: Unit Test Execution

Load trigger: "load unit-test-execution skill" > DORA: Cap 5 (Small Batches / Shift Left on Quality) Token cost: Low

Purpose

Run unit tests and validate correctness of individual components.

Responsibilities

Execute unit test suite
Collect test results and failure details
Collect coverage data
Detect flaky or skipped tests

Inputs

Source code
Unit test files
Test configuration (jest.config.ts, pytest.ini, etc.)

Outputs

unit-test-results.json
unit-test-report.md

Execution Rules

Pre-Run

Test framework installed and configured
Test files discovered and counted
Dependencies available (no missing modules)

Execution

All unit tests executed
No tests skipped without justification
Test output captured (stdout, stderr)
Exit code checked (non-zero = failure)

Post-Run

Pass/fail counts recorded
Failure details captured (test name, assertion, file:line)
Coverage data collected (line, branch, function)
Flaky tests flagged (if detectable)

Tools

Language	Runner	Coverage
TypeScript	Jest / Vitest	`--coverage`
Python	pytest	`pytest-cov`
Go	`go test`	`-coverprofile`
Rust	`cargo test`	`cargo-tarpaulin`

Output Format

{
  "skill": "unit-test-execution",
  "status": "pass | fail",
  "total": 44,
  "passed": 42,
  "failed": 0,
  "skipped": 2,
  "coverage": {
    "line": 87.5,
    "branch": 79.2,
    "function": 92.1
  },
  "failures": [],
  "skipped_tests": ["test name 1"]
}

Success Criteria

All unit tests pass
Coverage data collected successfully
No unexplained skips

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.

8d ago First seen · 94 lines · 28 tokens per session scan A ad1e077f7f39

Subscribe to this mod's changes

unit-test-execution is a skill published in the GitHub repository paruff/uFawkesAI (2 stars, last pushed 19d ago), licensed MIT. It adds 28 tokens to every session and 560 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 2026-09-03.

Analytics and metrics Claude Code Testing Unit testing agents-md ai-agents cursor devex dora-metrics

unit-test-execution