bun-test-basics SKILL.md skillA
bun-test-basics from secondsky/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add secondsky/claude-skills/bun-test-basics@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- secondsky/claude-skills
- Path
plugins/bun/skills/bun-test-basics/SKILL.md- Versions recorded
- 5
- Latest version
- v1.0.0, committed Aug 3, 2026
- First version recorded
- Dec 29, 2025
- Size
- 4,372 bytes
- Repository stars
- 247
- License
- MIT
Use for bun:test syntax, assertions, describe/it, test.skip/only/each, and basic patterns.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Bun Test Basics
Bun ships with a fast, built-in, Jest-compatible test runner. Tests run with the Bun runtime and support TypeScript/JSX natively.
## Quick Start
```bash
# Run all tests
bun test
# Run specific file
bun test ./test/math.test.ts
# Run tests matching pattern
bun test --test-name-pattern "addition"
```
## Writing Tests
```typescript
import { test, expect, describe } from "bun:test";
test("2 + 2", () => {
expect(2 + 2).toBe(4);
});
describe("math", () => {
test("addition", () => {
expect(1 + 1).toBe(2);
});
test("subtraction", () => {
expect(5 - 3).toBe(2);
});
});
```
## Test File Patterns
Bun discovers test files matching:
- `*.test.{js|jsx|ts|tsx}`
- `*_test.{js|jsx|ts|tsx}`
- `*.spec.{js|jsx|ts|tsx}`
- `*_spec.{js|jsx|ts|tsx}`
## Test Modifiers
```typescript
// Skip a test
test.skip("not ready", () => {
// won't run
});
// Only run this test
test.only("focus on this", () => {
// other tests won't run
});
// NOTE: in Bun 1.3+ `bun test` exits non-zero in CI when a file uses
// `test.only`. Use it for local debugging only — never commit it.
// Placeholder for future test
test.todo("implement later");
// Expected to fail
…Read the whole file at its exact version.
How to install
mdr add secondsky/claude-skills/bun-test-basics@sha256:ea4c78e705eb299aThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_mql2bumzl5p5wmep)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Dec 29, 2025 and Aug 3, 2026, about one every 54 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-08-03 | bbf808c | 4,372 B | A | view · diff |
| v1.0.0 | 2026-04-26 | 852a9f7 | 4,233 B | A | view · diff |
| v1.0.0 | 2026-04-02 | 75421fa | 4,231 B | A | view · diff |
| v1.0.0 | 2026-04-02 | 89c5e89 | 4,218 B | A | view · diff |
| v1.0.0 | 2025-12-29 | 2cbc8ed | 4,204 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4372 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
secondsky/claude-skills · 247 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mql2bumzl5p5wmep GET https://markdownregistry.com/api/v1/resolve?ref=secondsky/claude-skills/bun-test-basics GET https://markdownregistry.com/api/v1/blob/ea4c78e705eb299aa056e6e1c96742967f9b09e21d39f9c72ad2a2642886d677
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.