What is copilot-kit testing.instructions.md?

A set of software testing standards covering test structure, test levels, naming, test targets, and mocking.

Use it when creating unit, integration, or end-to-end tests, following the Arrange-Act-Assert pattern and testing business logic, edge cases, and errors.

It helps teams write tests that check user-visible behavior and important logic without depending on implementation details or outside systems.

copilot-kit testing.instructions.md — Instructions file by ivanshtokov

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 instructions/ivanshtokov/copilot-kit/testing

Clone the repo

git clone --depth 1 https://github.com/ivanshtokov/copilot-kit

Made for: GitHub Copilot.

Per session 339 This file is loaded in full into every session.

When invoked 339 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5	$0.00339	$0.00339
Opus 5	$0.00169	$0.00169
Sonnet 5	$0.00068	$0.00068
Haiku 4.5	$0.00034	$0.00034

Measured yesterday against content hash f34bcfd146c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

copilot-kit testing.instructions.md 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 yesterday.

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.

.github/instructions/testing.instructions.md · 62 lines

What it actually says

Testing Standards

🎯 Before Writing Tests

READ: .github/skills/testing-patterns/SKILL.md

📊 Testing Pyramid

        /\          E2E (Few) - Critical user flows
       /  \         
      /----\        Integration (Some) - API, DB
     /      \       
    /--------\      Unit (Many) - Functions, classes

✅ AAA Pattern (Always Use)

// Arrange - Set up test data
const user = createMockUser();

// Act - Execute code under test
const result = await getUserById(user.id);

// Assert - Verify outcome
expect(result).toEqual(user);

📋 Naming Convention

describe('UserService', () => {
  describe('getUserById', () => {
    it('should return user when found', () => {});
    it('should throw NotFoundError when user does not exist', () => {});
    it('should handle invalid id gracefully', () => {});
  });
});

🎯 What to Test

✅ Test	❌ Don't Test
Business logic	Framework code
Edge cases	Third-party libs
Error handling	Simple getters
User-visible behavior	Implementation details

🔧 Mocking Rules

Mock external APIs and databases
Mock time/random for determinism
Don't mock the code under test
Use factories for test data

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.

yesterday First seen · 62 lines · 339 tokens per session scan A f34bcfd146c5

Subscribe to this mod's changes

copilot-kit testing.instructions.md is an instructions file published in the GitHub repository ivanshtokov/copilot-kit (2 stars, last pushed 7mo ago), licensed MIT. It adds 339 tokens to every session, about $0.0017 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.

Testing

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AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

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Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

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copilot-kit testing.instructions.md