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Jasmine Cookbook

You're reading from   Jasmine Cookbook Over 35 recipes to design and develop Jasmine tests to produce world-class JavaScript applications

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Product type Paperback
Published in Apr 2015
Publisher
ISBN-13 9781784397166
Length 276 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Munish Kumar Munish Kumar
Author Profile Icon Munish Kumar
Munish Kumar
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Toc

Table of Contents (11) Chapters Close

Preface 1. Getting Started with Jasmine Framework 2. Jasmine with TDD and BDD Processes FREE CHAPTER 3. Customizing Matchers and Jasmine Functions 4. Designing Specs from Requirement 5. Jasmine Spies 6. Jasmine with AJAX, jQuery, and Fixtures 7. Code Coverage with Jasmine Tests 8. Jasmine with Other Tools 9. Developing JavaScript Apps Using Jasmine – a Real-time Scenario Index

Writing a Jasmine test using a custom equality tester function

You can customize how Jasmine determines whether two objects are equal by defining your own custom equality tester. A custom equality tester is a function, which takes two arguments. This function returns either true or false based on the arguments. Also, if it is unable to compare the argument values, then the custom equality tester function will return undefined.

In this recipe, you will learn how to compare the equality of two objects using such custom equality tester functions.

Let's consider a scenario where the equality of two strings should be decided using a custom equality tester function.

"As a JavaScript developer, I want to develop a mechanism to check the equality of two strings so that I can compare and categorize objects."

  • Scenario-1: Two strings should be equal if the first word of both strings is Packt

How to do it...

You need to perform the following steps:

  1. First, you need to create a spec file (custom_equality_spec...
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