JavaScript Testing with Jasmine

JavaScript Behavior-Driven Development

Evan Hahn (Autor)

Buch | Softcover

52 Seiten

2013
O'Reilly Media, Inc, USA (Verlag)
978-1-4493-5637-8 (ISBN)

Artikel merken

Get a concise introduction to Jasmine, the popular behavior-driven testing framework for JavaScript. This practical guide shows you how to write unit tests with Jasmine that automatically check for bugs in your application. Learn how to write specifications for individual components, and then use those specs to test the code you write.

Throughout the book, author Evan Hahn focuses primarily on methods for testing browser-based JavaScript applications, but you’ll also discover how to use Jasmine with CoffeeScript, Node.js, Ruby on Rails, and Ruby without Rails. You won’t find a more in-depth source for Jasmine anywhere.

Get an overview of both test-driven and behavior-driven development
Write useful specs by determining what you need to test—and what you don’t
Test the behavior of new and existing code against the specs you create
Apply Jasmine matchers and discover how to build your own
Organize code suites into groups and subgroups as your code becomes more complex
Use a Jasmine spy in place of a function or an object—and learn why it’s valuable

Evan Hahn is a JavaScript developer currently enrolled at University of Michigan. He started coding in BASIC when he was 6 years old. In high school, he was the webmaster of his high school's online newspaper, where he learned how to make more of a real website (PHP, mySQL, JavaScript, jQuery). He most recently worked at UniversityNow, an educational startup in Palo Alto.

Chapter 1 Intro to Testing
What Is Software Testing?
Why Is It Useful?
Test-Driven Development
Behavior-Driven Development
Chapter 2 Jasmine
What Is Jasmine?
Getting Set Up with Jasmine
Testing Existing Code with describe, it, and expect
Matchers
Writing the Tests First with Test-Driven Development
Chapter 3 Writing Good Tests
Cardinal Rule: When in Doubt, Test
Test Components
Black-Box Testing
Chapter 4 Matchers in Depth
Equality: toEqual
Identity: toBe
Yes or No? toBeTruthy, toBeFalsy
Negate Other Matchers with not
Check If an Element Is Present with toContain
Is It Defined? toBeDefined, toBeUndefined
Nullness: toBeNull
Is It NaN? toBeNaN
Comparators: toBeGreaterThan, toBeLessThan
Nearness: toBeCloseTo
Using toMatch with Regular Expressions
Checking If a Function Throws an Error with toThrow
Custom Matchers
Chapter 5 More Jasmine Features
Before and After
Nested Suites
Skipping Specs and Suites
Matching Class Names
Chapter 6 Spies
The Basics: Spying on a Function
Calling Through: Making Your Spy Even Smarter
Making Sure a Spy Returns a Specific Value
Replacing a Function with a Completely Different Spy
Creating a New Spy Function
Creating a New Spy Object
Chapter 7 Using Jasmine with Other Tools
Jasmine and CoffeeScript
Jasmine and Node.js
Jasmine and Ruby on Rails
Jasmine with Non-Rails Ruby
More Tools
Chapter 8 Reference
Jasmine on the Web
The Basic Structure of a Suite
Matchers Reference
List of Falsy Values
Reserved Words in Jasmine

Colophon

Erscheint lt. Verlag	7.5.2013
Verlagsort	Sebastopol
Sprache	englisch
Maße	178 x 233 mm
Gewicht	100 g
Einbandart	kartoniert
Themenwelt	Informatik ► Software Entwicklung ► Qualität / Testen
Themenwelt	Mathematik / Informatik ► Informatik ► Web / Internet
ISBN-10	1-4493-5637-0 / 1449356370
ISBN-13	978-1-4493-5637-8 / 9781449356378
Zustand	Neuware