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  • Book Overview & Buying Jasmine JavaScript Testing Update
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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
8
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

Static code analysis: JSHint

As stated in the first chapter, JavaScript is not a compiled language, but running the code (as in the case of automated testing) is not the only way to check for errors.

A whole class of tools is able to read source files, interpret them, and look for common errors or bad practices without needing to actually run the source files.

A very popular tool is JSHint—a simple binary that can also be installed through NPM, as follows:

npm install --save-dev jshint jsxhint

You can see that we are also installing JSXHint, another tool to perform static analysis of JSX files. It is basically a wrapper around the original JSHint while performing the JSX transformations.

If you remember from the previous chapter, JSXTransformer doesn't change the line numbers, so a warning in a given line number on a JavaScript file will be in the same line number in the original JSX file.

To execute them is very simple, as follows:

./node_modules/.bin/jshint .
./node_modules/.bin/jsxhint .

However...

CONTINUE READING
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Tech Concepts
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Programming languages
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Jasmine JavaScript Testing Update
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