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Jasmine JavaScript Testing Update

Jasmine JavaScript Testing Update

By : Paulo Vitor Zacharias Ragonha
4.2 (14)
Buy this Book
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Jasmine JavaScript Testing Update

Jasmine JavaScript Testing Update

4.2 (14)
By: Paulo Vitor Zacharias Ragonha
Buy this Book

Overview of this book

This book is for web developers and designers who work with React.js and JavaScript and who are new to unit testing and automation. It's assumed that you have a basic knowledge of JavaScript and HTML.
Table of Contents (10 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with Jasmine
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1. Getting Started with Jasmine
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JavaScript – the bad parts
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Jasmine and behavior-driven development
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Downloading Jasmine
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Summary
2
2. Your First Spec
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2. Your First Spec
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The Investment Tracker application
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Jasmine basics and thinking in BDD
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Setup and teardown
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Nested describes
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Summary
3
3. Testing Frontend Code
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3. Testing Frontend Code
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Thinking in terms of components (Views)
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The module pattern
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Using HTML fixtures
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Basic View coding rules
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Testing Views with jQuery matchers
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Summary
4
4. Asynchronous Testing – AJAX
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4. Asynchronous Testing – AJAX
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Acceptance criterion
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Setting up the scenario
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Writing the spec
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Summary
5
5. Jasmine Spies
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5. Jasmine Spies
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The "bare" spy
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Spying on an object's functions
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Testing DOM events
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Summary
6
6. Light Speed Unit Testing
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6. Light Speed Unit Testing
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Jasmine stubs
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Jasmine Ajax
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Summary
7
7. Testing React Applications
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7. Testing React Applications
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Project setup
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Our first React component
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The Virtual DOM
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JSX
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Component attributes (props)
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Component events
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Component state
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Component life cycle
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Composing components
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Summary
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8. Build Automation
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8. Build Automation
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Module bundler – webpack
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Test runner: Karma
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Quick feedback loop
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Optimizing for production
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Static code analysis: JSHint
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Continuous integration – Travis-CI
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Summary
9
Index
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Index

Thinking in terms of components (Views)

We've talked about the monolithic JavaScript code bases that plague most of the Web, which that are code bases that are impossible to test. And the best way not to fall into this trap is by coding the application driven by tests.

Consider the mockup interface of our Investment Tracker application:

This shows the Investment Tracker application's mockup interface

How would we go about implementing it? It is easy to see that this application has two different responsibilities:

  • One responsibility is to add an investment

  • Another responsibility is to list the added investments

So, we could start by breaking this interface into two different components. To better describe them, we are going to borrow a concept from MVC frameworks, such as Backbone.js, and call them Views.

So, here it is, at the top level of the interface, with two base components:

  • NewInvestmentView: This will be responsible for creating new investments

  • InvestmentListView: This is going to be a list...

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Tech Concepts
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Programming languages
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Jasmine JavaScript Testing Update
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