node-mock-examples

Examples of tests that mock Node system APIs: fs, http, child_process, timers

Practical working test examples for blog post Mock system APIs. Because mocking the stable, well documented Node system APIs is easier than stubbing your own internal code. And simpler to update in the future!

Mocking examples

• spec individual synchronous fs methods with sinon
• spec mocking a method for some arguments, but allowing the rest through to the original one
• spec restoring all mocked methods via sinon sandbox
• spec console mocking with mock-stdio and console-pop
• spec async fs methods
• spec entire file system with mock-fs
• spec network request with nock
• spec mocks child_process.exec call using stub-spawn-once
• spec mocks child_process.spawn call using stub-spawn-once
• spec mocks setInterval (same for setTimeout) with fake timers using sinon
• spec mocks Date using MockDate
• spec mocks specific Date prototype method using sinon

All examples use Mocha test framework, but do not rely on anything Mocha-specific.

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Small print

Author: Gleb Bahmutov <gleb.bahmutov@gmail.com> © 2017

• @bahmutov
• glebbahmutov.com
• blog

License: MIT - do anything with the code, but don't blame me if it does not work.