poku

Poku

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🐷 Website  •  📘 Documentation  •  🧪 Examples  •  🧑🏻‍🎓 Tutorials

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Why does Poku exist?

💡 Poku is a cross-platform test runner that brings the JavaScript essence back to testing.

High isolation level per file
Performant and lightweight
Run CommonJS files directly with Deno
Auto detect ESM, CJS, and TypeScript files
Run the same test suite for Node.js, Bun, and Deno
Easily handle servers, processes, ports, and even containers ✨

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Quickstart

Install

# Node.js npm i -D poku

# TypeScript (Node.js) npm i -D poku tsx

# Bun bun add -d poku

# Deno (optional) deno add npm:poku

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Test

test/file.test.mjs

import { assert } from 'poku'; assert(true, 'Poku will describe it 🐷');

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Run

Node.js (and TypeScript)	Bun	Deno
npx poku	bunx poku	deno run npm:poku

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Features

Essentials

poku	🧪 Test runner.
assert	🔍 Test assertion (Node.js familiar API).
strict	🔬 Strict test assertion (Node.js familiar API).

Helpers

test • describe • it	🤹🏻‍♀️ Organize, group, and isolate tests.
envFile	⚙️ Process an environment file (out-of-box).
beforeEach • afterEach	🃏 Hooks for test setup and teardown.
startScript	🌐 Run package.json scripts in background.
startService	🌐 Run files in background.
docker	🐳 Build, start, compose, stop, remove, and test containers.
kill	🔌 Terminate ports, port ranges, and PIDs.
waitForPort	😴 Wait for specified ports to become active.
waitForExpectedResult	🥱 Retry until an expected result or times out.
skip	⏭️ Skip tests when necessary.
only	🌌 Debug tests by enabling selective runs.
getPIDs	🕵🏻 Debug processes IDs using ports and port ranges.

Common Options

watch	🍿 Watch for changes and re-run related test files.
parallel	🏃🏻‍♀️ Run tests in parallel.
debug	🕵🏻 Shows all logs.
config	⚙️ Customize your Poku options in a config file.

and much more 👇🏻

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Documentation and Examples

To see the detailed documentation, please visit the Documentation and Examples sections in the Poku's website.

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Tutorials

Poku offers mini-lessons for different users needs in the Quick Tutorials section.

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Common Issues

• Avoiding conflicts in environments with multiple platforms installed.
• Properly running asynchronous tests on the same file.
• Using Poku without installing on Deno and alternatives to JSR.
• Migrating from version 1.x to version 2.x.

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Quick Comparisons

Performance

Poku is continuously tested to ensure the following expectations for basic usage:

• ~4x faster than Jest (v29.7.0)
• ~4x faster than Vitest (v2.1.3)
• ~2x faster than Mocha (v10.7.3) — even with test file isolation

• You can see how the tests are run and compared in the benchmark directory.
• Comparing Poku and native test runners (discussion).

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Installation Size

• ~230x lighter than Vitest
• ~130x lighter than Jest
• ~30x lighter than Mocha + Chai

Poku size ensures cost-saving CI for services that charge for storage and usage.

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Security Policy

Please check the SECURITY.md.

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Contributing

See the Contributing Guide and please follow our Code of Conduct 🚀

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Acknowledgements

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License

Poku is under the MIT License.
Copyright © 2024-present Weslley Araújo and Poku contributors.