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Jasmine Cookbook

By : Munish Kumar
Book Image

Jasmine Cookbook

By: Munish Kumar

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Jasmine Cookbook
Munish Kumar
Apr, 2015 | 276 pages
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Table of Contents (16 chapters)
Jasmine Cookbook
Jasmine Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Getting Started with Jasmine Framework
Getting Started with Jasmine Framework
Introduction
Writing your first Jasmine test
Adding specs to your Jasmine test
Adding expectations and matchers to the test
Applying different matchers to the Jasmine test
Applying setup and teardown functions to the Jasmine test
Using the "this" keyword
2
Jasmine with TDD and BDD Processes
Jasmine with TDD and BDD Processes
Introduction
Writing Jasmine tests using TDD and BDD processes
Creating a Jasmine test for new code using TDD and BDD
Designing Jasmine tests for existing code using TDD and BDD
Defining nested suites to write more meaningful specs
3
Customizing Matchers and Jasmine Functions
Customizing Matchers and Jasmine Functions
Introduction
Writing a Jasmine test using a custom equality tester function
Writing Jasmine tests with custom matchers
Writing Jasmine tests for exceptions
Declaring pending specs with Jasmine tests
4
Designing Specs from Requirement
Designing Specs from Requirement
Introduction
Writing useful specs by analyzing the test requirements
Implementing the Jasmine test corresponding to the specs
Applying Acceptance Criteria to the Jasmine test
Organizing Jasmine specs into groups and subgroups
5
Jasmine Spies
Jasmine Spies
Introduction
Writing Jasmine tests using the spyOn() method and special matchers for spies
Writing Jasmine tests using tracking properties
Writing Jasmine tests with your own custom spy method
Using jasmine.any and jasmine.objectContaining
Writing Jasmine tests to mock the JavaScript timeout functions
6
Jasmine with AJAX, jQuery, and Fixtures
Jasmine with AJAX, jQuery, and Fixtures
Introduction
Writing Jasmine specs for AJAX
Designing Jasmine specs with HTML and JSON fixtures
Writing Jasmine specs for jQuery
Writing Jasmine specs using custom jQuery matchers
Writing Jasmine specs for asynchronous operations using the done() function
7
Code Coverage with Jasmine Tests
Code Coverage with Jasmine Tests
Introduction
Configuring code coverage tools
Generating code coverage using karma and istanbul
Writing Jasmine specs for uncovered branches/code
Increasing code coverage for existing code
8
Jasmine with Other Tools
Jasmine with Other Tools
Introduction
Writing Jasmine tests for AngularJS
Using Jasmine with CoffeeScript
Writing Jasmine tests for Node.js
9
Developing JavaScript Apps Using Jasmine – a Real-time Scenario
Developing JavaScript Apps Using Jasmine – a Real-time Scenario
Introduction
Defining Jasmine specs corresponding to a user story
Implementing Jasmine specs with Web/HTML
Implementing Jasmine tests with a Data-Driven approach
Creating Jasmine tests for a change request
Index
Index

Writing Jasmine tests for exceptions

In this recipe, you will learn to write Jasmine tests for JavaScript exceptions using the toThrow() and toThrowError() matchers. Also, you will learn how to write Jasmine tests to validate user-defined messages.

To write the Jasmine test for Exceptions, let's assume that you are developing an application for <ABC> company. Currently, you are developing an error handling module, which handles user-defined or system errors.

"As a JavaScript developer, I want to handle all the errors and validate error messages so that the end user should not get stuck during any process."

Let's consider some scenarios in the current context, that is, all the system and user-defined errors should be handled throughout the application:

  • Scenario-1: Error should be thrown on any unexpected behavior or malfunction.

  • Scenario-2: Error messages should be consistent throughout the application.

How to do it...

You need to perform the following steps to write Jasmine tests for exceptions...

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