Test-Driven JavaScript Development

Learn JavaScript test-driven development using popular frameworks and toolsAbout This BookLearn the life cycle of TDD and its importance in real-world applicationGain knowledge about popular tools and analyze features, syntax, and how they help in JavaScript testingImplement test-driven programming exercises using the practical code examplesWho This Book Is ForIf you have an intermediate knowledge of HTML, CSS, and JavaScript and want to learn how and why the test-driven development approach is better for your assignments, then this book is for you.What You Will LearnBasic TDD fundamentals, life cycle, and benefitsBecome acquainted with the concepts and elements of unit testing and writing basic unit tests for JavaScriptUnderstand the way JsUnit, Qunit, Karma and DalekJs workUse the Jasmine frameworkInterpret feature detection and devise tests specific to cross-browser compatibilityIntegrate jsTestDriver with Eclipse and run tests with jsTestDriverExplore re-factoring, adding and notifying observersUnderstand test-driven development in case of server-side JSIn DetailInitially, all processing used to happen on the server-side and simple output was the response to web browsers. Nowadays, there are so many JavaScript frameworks and libraries created that help readers to create charts, animations, simulations, and so on. By the time a project finishes or reaches a stable state, so much JavaScript code has already been written that changing and maintaining it further is tedious. Here comes the importance of automated testing and more specifically, developing all that code in a test-driven environment. Test-driven development is a methodology that makes testing the central part of the design process – before writing code developers decide upon the conditions that code must meet to pass a test. The end goal is to help the readers understand the importance and process of using TDD as a part of development.This book starts with the details about test-driven development, its importance, need, and benefits. Later the book introduces popular tools and frameworks like YUI, Karma, QUnit, DalekJS, JsUnit and goes on to utilize Jasmine, Mocha, Karma for advanced concepts like feature detection, server-side testing, and patterns. We are going to understand, write, and run tests, and further debug our programs. The book concludes with best practices in JavaScript testing. By the end of the book, the readers will know why they should test, how to do it most efficiently, and will have a number of versatile tests (and methods for devising new tests) to get to work immediately.Style and approachEasy-to-follow guide with suitable examples for developing JavaScript code in the test-Driven environment, with popular tools and frameworks. User experience and statements are also included to help readers make a better choice of tool for real-world projects.