Tag: Grunt

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Using Mocha Chai Sinon to test Node.js

In this article I’m going to show you how to write tests for your NodeJS application using Mocha, Chai and Sinon. Mocha is a feature-rich JavaScript test framework running on node.js and the browser, making asynchronous testing simple and fun. Mocha tests run serially, allowing for flexible and accurate reporting, while mapping uncaught exceptions to the correct test cases. One of the cool things is you can choose your own assertion style when writing Mocha tests. In this article I will use Chai to do my assertions. Chai is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any JavaScript testing framework. Chai supports 3 assertion styles. Should, expect and assert. This makes Mocha and Chai the ultimate combination to make your testing suite completely fit your own project needs and desires. As a mocking framework I choose Sinon since it integrates neatly with Mocha and Chai and dozens of other test frameworks. Standalone test spies, stubs and mocks for JavaScript. No dependencies, works with any unit testing framework. In order to start with writing your tests we first need to install Mocha, Chai and Sinon. Since I use Mocha for multiple projects I choose to install Mocha globally. 12npm install -g mochanpm install --save-dev mocha chai sinon To be sure the consumers of my node package also have mocha installed I also add it to the dev dependencies. Since I installed Mocha globally it won’t be installed in my package folder again. Now we can actually start writing our tests.

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Automate your development tasks using Grunt

Grunt is an extremely useful Node.js package to automate lots of development and continuous integration tasks. The Grunt eco-system has lots of packages available on npm. This enables us to quickly setup our development/continuous integration environment. Grunt tasks mostly have two required properties. An files array, which is used to configure on what files the tasks is executed, and an options property which configures some task specific settings. The files array supports the globbing and minimatch pattern to match files based on the provided expression. So what tasks could you use for your projects, or for which project can you use Grunt? How do I configure Grunt tasks? How do I execute them? All these questions I try to answer for you in this article.