testing

Defines how API validation tools and browser automation should be integrated into the development workflow for autonomous testing and continuous validation of implemented features.

Cursor rule for Cursor

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 rules/felipebarcelospro/igniter-js/testing
Clone the repo
git clone --depth 1 https://github.com/felipebarcelospro/igniter-js

Made for: Cursor.

Per session 3,773 This file is loaded in full into every session.
When invoked 3,773 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.03773 $0.03773
Opus 5 $0.01886 $0.01886
Sonnet 5 $0.00755 $0.00755
Haiku 4.5 $0.00377 $0.00377

Measured today against content hash 94ea643a407e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

testing 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 today.

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.

apps/starter-nextjs/.cursor/rules/testing.mdc · 489 lines

How it starts

The opening of the file, as written. The whole thing — 489 lines — stays where its author put it; the contents beside it link to each section on GitHub.

API Validation Workflow Integration

This rule defines how API validation tools (get_openapi_spec and make_api_request) should be integrated into the development workflow to enable autonomous testing and continuous validation of implemented features.

1. Development Cycle Integration

1.1 Workflow Phases with API Validation

graph TB
    A[Requirements Gathering] --> B[Planning]
    B --> C[Waiting Approval]
    C --> D[Work Phase]
    D --> E{Validation Phase}
    E --> F[API Testing]
    F --> G{Tests Pass?}
    G -->|Yes| H[Revise & Document]
    G -->|No| I[Debug & Fix]
    I --> F
    H --> J[Feedback]
    J --> K[Learn & Improve]

    style F fill:#e1f5fe
    style G fill:#fff3e0

1.2 Mandatory Integration Points

During Work Phase:

  • After implementing each endpoint
  • After modifying API data structures
  • Before marking tasks as complete

During Validation Phase:

  • Complete validation of implemented feature
  • Testing success and error scenarios
  • API contract validation

During Revise Phase:

  • Re-testing after fixes
  • Regression validation

2. Tool Usage Protocols

2.1 get_openapi_spec Protocol - MANDATORY FIRST STEP

🚨 CRITICAL REQUIREMENT: This is the FIRST STEP for ALL testing scenarios

When to use:

  • MANDATORY: At the beginning of EVERY testing session
  • MANDATORY: Before ANY API request testing
  • MANDATORY: To verify if application is online and accessible
  • After generating or modifying controllers
  • Before implementing client/frontend code
  • To understand existing API contracts

CRITICAL VALIDATION WORKFLOW:

// 1. FIRST: Investigate the default server port and check if it's already running.
//    If the server is not running, only then proceed to start it.
// 2. ONLY THEN proceed with other testing.
// 3. Store insights about the API.

Server Startup Protocol:

  • If get_openapi_spec fails after initial investigation: Automatically start development server.
  • Wait for server initialization: Allow 2-3 seconds for server to be ready.
  • Retry validation: Confirm server is accessible before proceeding.
  • Document server status: Store server startup patterns for future reference.

Read the full file on GitHub · 489 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.

  1. today First seen · 489 lines · 3,773 tokens per session scan A 94ea643a407e

Subscribe to this mod's changes

testing is a cursor rule published in the GitHub repository felipebarcelospro/igniter-js (242 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 3,773 tokens to every session, about $0.0189 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 2026-09-01.