agentmods.dev

rn-test-generation

rn-test-generation is a skill for Claude Code, Codex from cmaranho/rn-agent-skills. It costs 49 tokens per session (435 once invoked), scanned A, original, MIT.

A guide for creating automated tests for existing React Native applications, which are mobile apps built with React. It covers unit, component, hook, and store tests, plus mocks and edge cases.

In plain words
What is it for?
Use it to identify success, failure, and boundary cases, prepare dependency mocks, write focused tests, and check relevant code paths.
Why use it?
It helps add meaningful coverage where tests are missing or incomplete before changing the code.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 2repo 4mo ago A scan 49 tokens original MIT

Good fit Use it to identify success, failure, and boundary cases, prepare dependency mocks, write focused tests, and check relevant code paths.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cmaranho/rn-agent-skills/rn-test-generation
View source ↗ cmaranho/rn-agent-skills
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 cmaranho/rn-agent-skills --skill rn-test-generation
Clone the repo
git clone --depth 1 https://github.com/cmaranho/rn-agent-skills

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 rn-test-generation

README.md
[![agentmods](https://agentmods.dev/badge/skills/cmaranho/rn-agent-skills/rn-test-generation/github.svg)](https://agentmods.dev/skills/cmaranho/rn-agent-skills/rn-test-generation)
Your own site
<a href="https://agentmods.dev/skills/cmaranho/rn-agent-skills/rn-test-generation"><img src="https://agentmods.dev/badge/skills/cmaranho/rn-agent-skills/rn-test-generation/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.

agentmods 80×15 button for rn-test-generation

Your own site · 80×15
<a href="https://agentmods.dev/skills/cmaranho/rn-agent-skills/rn-test-generation"><img src="https://agentmods.dev/badge/skills/cmaranho/rn-agent-skills/rn-test-generation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 435 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00049 $0.00435
Opus 5.5 $0.00020 $0.00174
Sonnet 5.5 $0.00010 $0.00087
Haiku 4.5 $0.00005 $0.00044

Measured 2mo ago against content hash 8218e60b72a4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rn-test-generation 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.

skills/rn-test-generation/SKILL.md · 52 lines

What it actually says

React Native — Geração de Testes

Objetivo

Produzir testes significativos para código existente, cobrindo comportamento e bordas.

Quando utilizar

  • Código novo ou legado sem cobertura.
  • Completar lacunas antes de refatorar.
  • Adicionar testes exigidos por regra (repositório, hook, mapper, helper, util, UI).

Conhecimentos necessários

  • Padrões de teste do projeto (ver skill rn-testing).
  • Identificação de casos: caminhos, ramos, bordas e erros.
  • Estratégia de mocks e isolamento por camada.
  • Queries de acessibilidade para UI.

Fluxo de execução

  1. Leia a unidade e liste comportamentos observáveis e ramos.
  2. Enumere casos: sucesso, erro e borda (null/undefined/vazio/limite).
  3. Monte mocks das dependências (rede, store, navegação, nativo) antes dos imports.
  4. Escreva 3–5 testes focados por arquivo em Arrange/Act/Assert ("should").
  5. Rode, verifique a cobertura dos ramos relevantes e ajuste.

Boas práticas

  • Teste comportamento observável, não implementação.
  • Um assert conceitual por teste; nomes descritivos.
  • Reutilize fixtures/factories de dados de teste.
  • Prefira poucos testes de alto valor a muitos triviais.

Armadilhas comuns

  • Gerar testes que só espelham a implementação.
  • Cobertura alta sem asserts significativos.
  • Esquecer ramos de erro e bordas.
  • Mocks frágeis acoplados a detalhes internos.

Critérios de sucesso

  • Ramos e bordas relevantes cobertos.
  • Testes falham quando o comportamento quebra.
  • Suíte verde, determinística e sustentável.
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. 2mo ago First seen · 52 lines · 49 tokens per session scan A 8218e60b72a4

Subscribe to this mod's changes

rn-test-generation is a skill published in the GitHub repository cmaranho/rn-agent-skills (2 stars, last pushed 4mo ago), licensed MIT. It adds 49 tokens to every session and 435 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 2026-08-31.

MobileTestingUnit testing
Related

rn-test-generation compared with skills from other repositories

rn-test-generation next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
rn-test-generationcmaranho/rn-agent-skillsSkill24mo agoMITA49Claude Code, Codex
swift-protocol-di-testingaffaan-m/ECCSkill298k4d agoMITA32Claude Code, Kiro
android-do-not-mockchromium/chromiumSkill25kyesterdayBSD-3-ClauseA96Claude Code, Codex
android-unit-testchromium/chromiumSkill25kyesterdayBSD-3-ClauseA36Claude Code, Codex
react-native-testingcallstack/react-native-testing-librarySkill3.4kyesterdayMITA134Claude Code, Codex
flutter-add-widget-testflutter/agent-pluginsSkill3.2k2d agoBSD-3-ClauseA48Claude Code
mobiai-android-testingArisGuimera/MobiAI-CoreSkill4924d agoMITA30Claude Code