execution/testing-executor

A specialized coding-agent role for writing unit, integration, and end-to-end tests. Unit tests check small pieces, integration tests check connected parts, and end-to-end tests check a complete user flow.

In plain words
What is it for?
Use it to add tests for regressions, boundary cases, and failures, and to show that a bug stays fixed.
Why use it?
It focuses tests on the real bug and its failure conditions instead of tests that only pass on the normal path.

Skill for Claude CodeCodex

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/dynos-fit/dynos-work/testing-executor
Any agent
npx skills add dynos-fit/dynos-work --skill testing-executor
Clone the repo
git clone --depth 1 https://github.com/dynos-fit/dynos-work

Made for: Claude Code, Codex.

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 165 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 $0.00031 $0.00165
Opus 5 $0.00015 $0.00082
Sonnet 5 $0.00006 $0.00033
Haiku 4.5 $0.00003 $0.00016

Measured 2d ago against content hash 815b480711f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

execution/testing-executor 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.

skills/execution/testing-executor/SKILL.md · 20 lines

What it actually says

dynos-work: execution/testing-executor

Spawn the testing-executor agent with the user's prompt as the instruction.

Ruthlessness Standard

  • Do not allow decorative tests that only confirm the happy path.
  • The executor must target the actual regression mechanism, boundary condition, and failure mode.
  • A test that would pass before the bug fix is wasted output.

What to pass

Pass the user's full prompt verbatim. Do not summarize or sanitize it. Prepend a short hard wrapper that tells the agent to write tests that fail for the real bug, cover the edge behavior, and prove the regression is closed.

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. 2d ago First seen · 20 lines · 31 tokens per session scan A 815b480711f9

Subscribe to this mod's changes

execution/testing-executor is a skill published in the GitHub repository dynos-fit/dynos-work (2 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 165 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

memstack-development-test-writer

Use this skill when the user says 'write tests', 'add tests', 'test coverage', 'unit tests', 'integration tests', 'component tests', 'mocking', 'edge cases', or needs to generate tests with proper mocking and edge case coverage. Do NOT use for refactoring plans or database migrations.

cwinvestments/memstack · 70 tokens

test-implement

Implements React/TypeScript unit, integration, and browser E2E tests with the repository's configured runner, mocks, setup, and browser harness. Use when creating or completing frontend tests and generated test skeletons.

shinpr/claude-code-workflows · 48 tokens

ring:checking-frontend-quality

Checking frontend quality against changed UI via ring:qa-frontend in accessibility, visual, e2e, or performance mode and aggregating pass/fail verdicts. Use when a frontend change needs standalone a11y, visual-snapshot, Playwright e2e, or Lighthouse/Core-Web-Vitals validation outside the dev cycle. Skip for…

LerianStudio/ring · 102 tokens

ccc-qa

QA workflow. Runs unit + integration + E2E tests, coverage delta, edge case enumeration, flaky test quarantine. Delegates to qa-engineer agent.

KevinZai/commander · 36 tokens

testing

· Write/debug tests: unit, integration, E2E, TDD, mocks, fixtures, a11y, perf. Triggers: 'test', 'spec', 'TDD', 'playwright', 'vitest', 'jest', 'pytest', 'coverage', 'flaky'. Not for security tests (use security-audit).

iuliandita/skills · 72 tokens

harden

Evidence-driven codebase hardening. Audits security (OWASP Top 10:2025), supply chain (inventory vs SBOM vs SLSA v1.2), reliability (OTel + operational limits), tests (sandboxed tiers), and accessibility (WCAG 2.2 AA). Every finding is quoted, matrix-scored, and cited. Does not fix. Reports with file:line and a…

Calvin-LLC/agentic-hardening-skill · 117 tokens