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  • Book Overview & Buying Learning Behavior-driven development with Javascript
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Learning Behavior-driven development with Javascript

Learning Behavior-driven development with Javascript

By : Enrique Javier A Rubio
4.9 (7)
Buy this Book
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Learning Behavior-driven development with Javascript

Learning Behavior-driven development with Javascript

4.9 (7)
By: Enrique Javier A Rubio
Buy this Book

Overview of this book

This book is ideal for any JavaScript developer who is interested in producing well-tested code. If you have no prior experience with testing, Node.js, or any other tool, do not worry, as they will be explained from scratch.
Table of Contents (12 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. Welcome to BDD
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1. Welcome to BDD
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The test-first approach
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BDD versus TDD
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Exploring unit testing
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The structure of a test
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What is a good test?
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Summary
2
2. Automating Tests with Mocha, Chai, and Sinon
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2. Automating Tests with Mocha, Chai, and Sinon
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Node and NPM as development platforms
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Configuring your project with NPM
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Introducing Mocha
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More expressive assertions with Chai
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Red/Green/Refactor
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Test doubles with Sinon
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Summary
3
3. Writing BDD Features
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3. Writing BDD Features
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Introducing myCafé
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Writing features
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Testing asynchronous features
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Organizing our test code
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Finishing our feature
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Summary
4
4. Cucumber.js and Gherkin
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4. Cucumber.js and Gherkin
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Getting started with Gherkin and Cucumber.js
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Writing advanced scenarios
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Useful Cucumber.js features
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Cucumber.js or Mocha?
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Summary
5
5. Testing a REST Web API
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5. Testing a REST Web API
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The approach
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Testing the GET order feature
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Testing slave resources
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Summary
6
6. Testing a UI Using WebDriverJS
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6. Testing a UI Using WebDriverJS
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Our strategy for UI testing
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WebDriverJS
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Testing a rich Internet application
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Summary
7
7. The Page Object Pattern
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7. The Page Object Pattern
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Introducing the Page Object pattern
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A page object for a rich UI
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Summary
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8. Testing in Several Browsers with Protractor and WebDriver
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8. Testing in Several Browsers with Protractor and WebDriver
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Testing in several browsers with WebDriver
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Welcome Protractor!
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Summary
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9. Testing Against External Systems
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9. Testing Against External Systems
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Writing good test doubles
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Testing against external systems
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Summary
10
10. Final Thoughts
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10. Final Thoughts
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TDD versus BDD
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A roadmap to BDD
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Concluding the book
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Next steps?
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Summary
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Index
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Index

Introducing the Page Object pattern

If we have a look at the code we have written, we will realize that the tests are a bit ugly. The tests are not very readable because there is a lot of references to the WebDriver API that is a bit low-level. Furthermore, there are many CSS selectors throughout all the tests. This produces two main problems:

  • Excessive verbosity and a lack of readability in the tests due to all these references to CSS selectors and the WebDriver API.
  • Difficult maintenance. A change in the structure of the HTML can break our tests, because the specified CSS selectors are no longer valid. The problem is not the fact that the tests get broken, but that we need to review all the tests, looking for the selectors that we need to fix. This is because the same CSS selector can be referenced in several tests that depend on the same element.

The Page Object pattern intends to solve these problems by encapsulating the details of accessing the elements of a page and interacting with...

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Learning Behavior-driven development with Javascript
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