18-Jun-2019
Progressive Web App (PWA) Testing
By Munish Garg
18-Jun-2019
By Munish Garg
As the world is growing fast in electronics, digital and mobile technologies, smartphone users are also increasing day by day and so is the usage of internet data. Recent developments in new technologies are helping users to get familiar with smartphones and are helping them to find easy ways to surfing.
The term “progressive web applications” is introduced recently and it has a positive impact on mobile app development technologies. “Combining the very best qualities of the web with native apps” are termed as Progressive Web Apps.
The best part/features about native applications are push notifications and work offline features. When compared to native apps, mobile web applications did not have the same features. Conversely, credits to web apps now all are possible. It is comprised of new Web APIs and updated web technology.
To get a clear idea about PWA we define it as, PWA (or a Progressive Web Application) is an app within your browser, displayed as a website. It does not require any downloading or installation from App Store or Google Play.
Simply, it can be defined as a website that feels like a native mobile app.
Progressive web apps will give the experience of native apps on mobile web browsers such as Chrome and Opera.
PWAs are hosted on users’ servers and can be updated without any need of issuing new updates to a play store or app store. The features of these web apps like offline working, background refresh, quick loading, push notifications, and installability include all the capabilities like a native app offers.
The Simple structure of Progressive Web Application consists of the app shell and the dynamic/changing content.
App Shell = Static part
Content = Dynamic part
The HTML, CSS and JavaScript code combine to form the app shell, which builds the interface of the app. The interface is referred to as the static part of the app, which has the capability to display dynamic content. The app shell is cached on the device of the user and can be loaded immediately.
Content is referred to as the dynamic part; it always changes and is refreshed every time a connection is established with the internet.
One more technology exists that defines a PWA as a PWA. This technology is referred to as a Service Worker.
The service worker functions in the background as a JavaScript file. It is responsible for the offline functionality of the progressive web app through timely content caching.
Also, a simple JSON file acts as an important part and is referred to as an app manifest. It helps the device to recognize the PWA and defines how it will be displayed on the screen.
The basic difference between a PWA and a responsive/native app is that it does not require downloading and installation like a native app from any store but it supports all features of a native app.
There are two main points that would be helpful in making a PWA:
Also Read: Technological Trends For Software Testing In 2019
These pwa testing tools are:
The growth of PWA is having a sound impact on various organizations and their online growth. We have gone through some of the principal testing techniques that are required for progressive web apps so that they closely agree to the standards and specifications.
As already seen, most of the part of PWA testing workflow depends on manual cross-browser testing. With the help of some best available tools, the burden of testing these apps manually can be significantly reduced.
Progressive web apps have enabled a new path for users to interact with websites and has allowed online businesses to involve and gain more customers. Progressive web app test is as important as building it, and time has come to take most of the advantage of this opportunity and welcome the PWA.
Also Read: Case Study on Medical-Devices Based Healthcare App Testing
Munish Garg
Munish Garg, is a Senior Coordinator QA Engineer & Editor associated with BugRaptors. He’s extremely passionate about his profession. His forte in testing is API testing using tools like Rest Assured, Postman etc. He’s a great team player and loves to help everyone. In addition to testing, he’s also fond of writing code which he likes to implement in his domain. He also loves to read and travel to new places.
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