Borrowing it
Nothing to install: this file belongs to reliverse/experiments. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/reliverse/experiments/main/.cursor/deprecated/testing-and-development.mdcgit clone --depth 1 https://github.com/reliverse/experimentsWrote 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.
[](https://agentmods.dev/rules/reliverse/experiments/testing-and-development)<a href="https://agentmods.dev/rules/reliverse/experiments/testing-and-development"><img src="https://agentmods.dev/badge/rules/reliverse/experiments/testing-and-development/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.
<a href="https://agentmods.dev/rules/reliverse/experiments/testing-and-development"><img src="https://agentmods.dev/badge/rules/reliverse/experiments/testing-and-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00000 | $0.00855 |
| Opus 5.5 | $0.00000 | $0.00342 |
| Sonnet 5.5 | $0.00000 | $0.00171 |
| Haiku 4.5 | $0.00000 | $0.00085 |
Grade A, and why
testing-and-development 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 1mo 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 — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Testing and Development Workflow
Guidelines for testing and development practices in the Rempts CLI framework.
Testing Framework
- Use Bun's built-in test runner with
bun test - Test files should have
.test.tssuffix intest/directories - Use testing utilities from packages/test/ for CLI-specific testing
Test Structure
// Example test file structure
import { describe, it, expect } from 'bun:test'
import { testCommand } from '@reliverse/rempts-test'
import { myCommand } from '../src/commands/my-command.js'
describe('My Command', () => {
it('should execute successfully', async () => {
const result = await testCommand(myCommand, {
flags: { input: 'test' } // Note: use 'flags', not 'args'
})
expect(result.exitCode).toBe(0)
expect(result.stdout).toContain('success')
})
it('should handle positional arguments', async () => {
const result = await testCommand(myCommand, {
flags: { verbose: true },
args: ['file1.txt', 'file2.txt'] // 'args' is for positional arguments
})
expect(result.stdout).toContain('file1.txt')
})
it('should handle plugin context', async () => {
const result = await testCommand(myCommand, {
flags: { verbose: true },
context: {
store: {
someData: 'test data'
}
}
})
expect(result.stdout).toContain('test data')
})
})
Testing Patterns
- Unit tests: Test individual functions and classes
- Command tests: Use packages/test/src/test-command.ts for CLI testing
- Integration tests: Test complete workflows in packages/test/test/advanced-scenarios.test.ts
Development Commands
From the root directory:
bun dev- Start development mode with watchbun test- Run all testsbun run build- Build all packagesbun run clean- Clean build artifacts
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.
- 1mo ago First seen · 124 lines · 0 tokens per session scan A c0472798f6e9
testing-and-development is a cursor rule published in the GitHub repository reliverse/experiments (117 stars, last pushed 7mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 855 tokens. 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.
Other cursor rules, from other repositories
use-contract-ir-factories
Use factory functions for creating ContractIR objects instead of manual object creation.
gonavi-go
A Go coding rule set for the GoNavi repository, based on common Go style guides and the project's own conventions. It covers file structure, errors, context, concurrency, logging, and tests.
workflow-level3
Defines the standard workflow for Level 3 (Intermediate Feature) tasks, guiding through comprehensive planning, targeted creative design, structured implementation, detailed reflection, and feature-specific archiving.
reflection-basic
Basic reflection format for Level 2 Simple Enhancement tasks.
rule-calling-guide
Comprehensive guide for calling VAN QA rules.
python-general-coding-standards
A set of general standards for Python projects, including type hints, input checking, code style, security, web requests, background work, and tests. It also covers FastAPI-specific tasks such as CORS and authentication.