A Complete Guide To AngularJS Testing
Posted On: August 9, 2022
18 Min Read
According to the stats, 4,126,784 websites are AngularJS customers. As AngularJS has gained popularity in the web development community, its testing frameworks have had to grow along with it. Currently, the most popular framework for unit testing Angular applications is Jasmine, and several others are gaining traction.
In this blog on AngularJS testing, let’s understand the difference between Angular and AngularJS, top features, benefits, testing methodologies, and components. However, before we get into details, let us first understand the basics of AngularJS.
TABLE OF CONTENTS
- What is AngularJS?
- Top features for AngularJS
- Components of AngularJS applications
- Differences between Angular and AngularJS
- Prerequisites before learning AngularJS
- Creating AngularJS applications
- Testing AngularJS applications using different methodologies
- How to perform AngularJS testing?
- How to perform AngularJS testing using LambdaTest?
- Frequently Asked Questions (FAQs)
What is AngularJS?
AngularJS has been used in production by several large companies, such as Google and Microsoft, as well as other organizations like NASA. It was created by Google employee Misko Hevery, who still maintains the development of the framework. And it’s open source software released under a BSD license, so it’s free to use commercially.
There are different versions of AngularJS available in the market. The first Angular version 1.0 was released in 2010 by Google. Angular 2.0 was released in September 2016. Angular 4.0 and 5.0 versions were released in March 2017 and November 2017, respectively. Google provides all the necessary support to this framework, and with a broad developer community, the features and functionalities are always up to date. Let’s now understand the importance of AngularJS.
The following are the main justifications for choosing AngularJS as your go-to framework:
- AngularJS allows you to work with components, and hence these components can be reused, which saves time and unnecessary effort spent in coding.
- It is a great framework that allows you to create Rich Internet Applications.
- It is an open-source, free framework, meaning an active developer community is contributing to it.
Top features for AngularJS
Let’s look at some of the top features of AngularJS
- Model View Controller (MVC) Architecture
- Model: Used to manage the application data requirements.
- View: Used for displaying the required application data.
- Controller: Helps to connect the model and the view component.
- Data Model Binding
- Support for Templates
MVC is a popular architecture with three main components:
It is about splitting your application into three components and performing the coding requirements. This is done in AngularJS, where we can effectively manage our coding with less time and effort.
There is a complete synchronization of the model and view layers. This means that any change in data for the model layer automatically brings the changes in the view layer and vice versa. This immediate action automatically ensures the model and view are updated every time.
The main advantage of using AngularJS is the use of template support. You can use these templates and use them effectively for your coding requirements.
Apart from the above great features, there is a predefined testing framework called Karma that helps to create unit tests using AngularJS applications, which is unique.
Limitations of using AngularJS
AngularJS contains many features that make it a powerful tool. However, this tool has limitations that developers should be aware of when deciding to use it, including:
- Finding the right set of developers to understand this complicated framework becomes challenging.
Components of AngularJS applications
The component pattern is a well-established way to solve this problem in the object-oriented world. AngularJS refers to them as directives and follows the same basic principle of isolating behavior from markup.
An AngularJS application consists of three main components:
We will discuss how all of these three components help to create AngularJS applications.
- ng-app: This directive allows you to define and link an AngularJS application to HTML.
- ng-model: This directive binds the values of AngularJS application data to corresponding HTML controls.
- ng-bind: This directive binds the AngularJS Application data to HTML tags.
Differences between Angular and AngularJS
AngularJS is a full-featured framework for building dynamic, single-page applications. Angular was built based on the design principles of AngularJS but is not simply an upgrade or update. As it is a different framework, it has some significant differences from AngularJS.
|Angular uses components and directives.||AngularJS supports MVC architecture.|
|Angular is supported on popular mobile browsers.||AngularJS does not support mobile browsers.|
|It is easier to maintain and manage large applications in Angular.||Difficult to maintain and manage large applications in AngularJS.|
|Angular comes with support for the Angular CLI tool.||It doesn’t have a CLI tool.|
Prerequisites before learning AngularJS
There are some prerequisites that need to be followed before you start implementing or even testing the AngularJS applications. Some of them include:
- Basic understanding of Document Object Model (DOM).
- Concepts related to Model View Controller (MVC).
- Basic knowledge of libraries.
- Angular CLI understanding and implementation.
Creating AngularJS applications
Follow the steps below to create and execute the AngularJS application in a web browser:
Step 1: Load the required framework using the
< Script > tag. You can execute the following code in the script tag. First, enter the required source details in the src.
Step 2: Define the AngularJS application using the ng-app directive. You can execute the following code:
Step 3: Define a model name using the ng-model directive. You can execute the following code:
Step 4: Bind the above model requirements using the ng-bind directive
Step 5: You can execute the above steps on an HTML page, and the required changes are executed or validated in the web browser.
Testing AngularJS applications using different methodologies
AngularJS is a modern web application framework that promotes cleaner, more expressive syntax for all types of applications. With its reliance on dependency injection and convention over configuration, it can make writing applications more efficient and consistent. However, AngularJS applications must be tested to ensure they function properly.
Most AngularJS developers know that the framework is based on an MVC pattern and that there are many different approaches to testing its applications. With many frameworks and libraries today, getting lost in the sea of choices is easy.
In this section of this blog on AngularJS testing, we’ll take a look at three different frameworks for testing AngularJS applications: Jasmine, Karma, and Protractor.
Karma is a JS runner created by the AngularJS team itself, and it is one of the best in AngularJS testing. Jasmine is a framework that allows you to test AngularJS code, while Karma provides various methods that make it easier to call Jasmine tests. For installing Karma, you need to install node JS on your machine. Once Node.js is installed, you can install Karma using the npm installer.
Protractor is an end-to-end testing framework for AngularJS applications. It is a Node.js program built on top of WebDriverJS. Protractor runs tests against the application running in a real browser. You can use this framework for functional testing, but you are still required to write unit and integration tests.
We have seen different frameworks available for AngularJS testing. Apart from the specialized testing frameworks, we can rely on cross browser testing platforms like LambdaTest for the complex testing requirements. This is one such platform that has gained a lot of recognition from developers and testers from all around the globe.
How to perform AngularJS testing?
Unit testing has become a standard practice in most software companies. Before rolling out features and improvements for end-user use, testing the coding requirements before the code is released on the production server is crucial.
The following aspects are covered during the testing phase:
- Validation of product requirements that are developed.
- Validation of test cases and test scenarios by the testing teams.
AngularJS testing can be performed in two ways:
- Manual Testing
- Automation Testing
Manual testing is all about executing different test cases manually, which takes considerable time and effort. This is performed by a team of manual testers where the required test cases are reviewed and validated for features and enhancements planned in every sprint.
Automation testing is a far more effective and quicker way of executing the testing requirements. This can be performed using an automation testing tool that helps automate the testing approach being followed. Many organizations have shifted their focus from manual to automation testing, as this is where the actual value lies. If you are new to automation testing, here is the guide for moving from manual to automated testing.
Gone are those days of traditional testing when a large amount of time was spent setting up the testing environment and finalizing the infrastructure requirements.
Online testing cloud platforms like LambdaTest have entirely transformed how we handle testing requirements. You can test AngularJS websites on a cloud-based cross browser testing platform that allows you to perform browser compatibility testing on an online browser farm of 3000+ browsers and operating systems. It is suitable for digital marketing creative agencies, web design, and software development companies looking to scale their business requirements.
You can perform manual and automation testing of mobile and web apps built using AngularJS CSS Framework. You can also test your applications and websites on real devices using the real device cloud functionality.
Cross browser testing is essential when running a web application on different supported browsers. This important technique allows you to validate the web application functionality and other dependencies. This is where LambdaTest comes out as a leader in transforming your testing requirements.
The following are some outstanding qualities that make the LambdaTest platform a fantastic one to work with:
- You can internally debug your testing errors by closely monitoring the logs. The logs help to troubleshoot the system errors in a much better way.
- Helps to accelerate your go-to-market strategy where you can complete your testing objectives in real quick time.
- Test automation cloud for AngularJS web testing.
- Test AngularJS websites on a mobile emulator online.
- You can perform local testing of your privately-hosted Angular application or website to achieve the desired performance.
- You can perform geolocation testing from different locations that allow you to collaborate with different teams located in different geographies.
- Online live interactive testing of AngularJS websites.
- HyperExecute– fastest test execution cloud for testing AngularJS web pages.
- App test automation on real Android and iOS devices.
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How to perform AngularJS testing using LambdaTest?
LambdaTest gives you the flexibility to perform comprehensive testing on different browsers, operating systems, and devices for your AngularJS applications.
In this AngularJS testing tutorial, let’s try testing Freelancer, an application built using AngularJS, on our LambdaTest platform.
Using Real Time Testing
Step 1: On the LambdaTest Dashboard, go to Real Time Testing -> Browser Testing.
Step 2: Enter the URL, select the VERSION, OS, and RESOLUTION. Then click START.
Step 3: Now, you can easily perform AngularJS testing of your website application.
Take a look at this video to learn more about Real Time testing on LambdaTest:
Using Mobile App Testing
The following two options are available under Mobile App Testing:
You can choose either of the two options based on your testing requirements:
Follow these steps to perform app testing:
- Select the required application platform.
- Enter the app source URL or upload a zip folder based on the data requirements
- Select the device type from the available options.
- Select the required device.
- Select the operating system.
- Once all the required details are entered, click Start.
Using Real Device Cloud
This option allows you to perform AngularJS testing on a real device cloud.
Step 1: Go to Real Device -> Real Time -> Browser Testing.
Step 2: Select the DEVICE TYPE, DEVICE/OS, and BROWSER.
Step 3: Click START.
You can directly work on the cloud-based real device in our platform.
You can run AngularJS testing on a real device cloud using various operating systems and real browsers. Take a look at this video to learn about real-time testing on the cloud:
Using Automation Testing
To conduct automation testing, you must pick up the appropriate automation frameworks. This may depend on the specifications and cost of the project. For example, if you use the Java programming language to perform AngularJS testing, you can choose any Java-based testing framework like TestNG or JUnit.
Step 1: To perform this automation testing, Go to Automation → Builds.
Step 2: If Java is chosen as the language, the following screen must be used to set up the project and the OS and browser. By setting up the required details, you may run your test case.
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We discussed how AngularJS is a prominent open-source framework if you are trying to build single-page web applications. There are different testing methodologies that you can adopt for AngularJS testing to make sure exceptional outcomes are achieved in the long run. There is always a crucial role played by cross browser testing platforms when testing your requirements on different supported platforms and devices.
This is where LambdaTest has achieved great success in real quick time. It has completely transformed the testing ecosystem by simplifying the complex testing requirements. As a result, you can deploy projects more effectively and easily with fewer challenges along the way.
If you are an established organization or a startup looking for an end-to-end testing platform, you should be trying the super cool features this platform has to offer. To understand the testing capabilities and features related to this platform, you can request a demo or talk to the technical team so that the right technical assistance can be provided.
Frequently Asked Questions (FAQs)
How do I run a test case in AngularJS?
AngularJS testing is accomplished by utilizing the Karma framework, which was created by Google. The node package manager is used to install the Karma framework. For basic testing, the following important modules must be installed: karma, karma-chrome-launcher, karma-jasmine, and karma-cli.
Is AngularJS a library or framework?
AngularJS is a structural framework for dynamic web applications. It enables you to use HTML as your template language and enhance HTML’s syntax to represent the components of your application succinctly and unambiguously.
Where is AngularJS used?
AngularJS is an open-source application framework used to build interactive website elements. It is a very popular framework because of its efficiency, simplicity, and adaptability. AngularJS may be summed up as a structural framework for dynamic web applications.
What is AngularJS?
Why use AngularJS?
AngularJS is valuable for dynamic web applications due to its structural framework, easy-to-use HTML template language, and powerful data binding and dependency injection features, which reduce the need for extensive code writing.
Is AngularJS a programming language?
What type of language is Angular?
Angular is primarily written in TypeScript, which is the recommended language for developing Angular applications. Using TypeScript offers benefits like reduced bugs and enhanced confidence in code refactoring.
Is Angular MVC or not?
Yes, AngularJS follows the MVC (Model-View-Controller) architectural pattern. It organizes application components into distinct sections, facilitating code separation and maintainability.
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