Step 1. Functional testing
Functional testing covers several aspects of testing, including database testing, security testing of web applications, API testing, user interface testing, client and application server testing, and basic features of the site. This test starts by checking a website for evident faults like broken links and test forms. Testers carefully go through each page of the site to ensure they are all loading correctly and there are no mistakes that may impact UX.
Cookie checking follows interface testing. Testers need to ensure that cookies are deleted when the date is expired, or the cache is cleared and the site requests credentials the next time users visit the page.
Functional testing also involves validating HTML and CSS. It’s important to ensure that the site has readable color schemes and contains no syntax errors that may prevent it from being crawled by search engines.
In the end, the site gets tested once again for business logic. Testers simulate the actions of users, executing several usage scenarios, where they take predicted and unexpected steps. As a result, they may reveal some minor issues that might have been overlooked at the planning stage of web application development.
Step 2. Usability testing
The next step is to test the app for usability. This involves checking website navigation and testing the content. The site should have well-readable elements that can be easily found. If you have several buttons, they should be visible and contrast with each other. If you have links, they should be clearly identifiable as well.
The content plays as important a role in the usability of web applications as navigation. It has to be legible and contain no spelling or grammatical errors. Otherwise, it will send bad signals to Google and won’t convert no matter how much money you invest in development. Testing the content can be done using tools like Clixpy, Chalkmark, and similar solutions.
Step 3. Interface testing
Further down, testers need to conduct interface testing, which embraces the following three areas: application, web server, and database server.
- The former is responsible for ensuring that test requests are correct and if any errors are being detected, they are only displayed to the administrator.
- Web server testing involves examining the performance of the web server, checking for any server-side errors, and ensuring that the application responds promptly to user requests.
- Database server testing, in turn, focuses on verifying data integrity, proper data storage, and how the data is retrieved.
These three systems must work seamlessly together to ensure that the end user sees the right message on the screen.
4. Compatibility testing
With so many browsers, platforms, and devices available now, it’s become increasingly important to run compatibility tests. Compatibility testing helps identify issues related to rendering the app on various browsers and operating systems, as well as their combinations, and ultimately increases its attractiveness by making it accessible across different platforms.
Most often, websites and web applications are tested using Dynatrace, BrowseEmAll, or IETester tools.
5. Performance testing
Once the compatibility of the site is checked, it must be tested for how well it works under unregular unloads. For this purpose, testers usually use either JMeter or LoadRunner tools and perform the following series of tests:
- Load testing – this is the most common type of performance testing that shows the app’s response and capacity under specific load conditions.
- Stress testing — this one helps define the stability of your application by bombarding it with user requests beyond normal operational capacity.
- Soak testing – this test is used to check the stability and performance of the system over long periods of time. If stress testing is a sprint, soak testing is a marathon.
- Spike testing – spike testing tests the app under different sudden and extreme loads to determine its behavior at different levels and find out its operational capabilities.
Conducting performance testing is important to ensure that when the site scales and starts attracting more traffic, it will work efficiently and reliably without experiencing any downtimes. It is also a must for eCommerce applications where seasonal peaks are the norm.
6. Security testing
Security testing is a must for pretty much every web application that stores personal data, but it’s particularly important for banking platforms and eCommerce solutions dealing with credit card transactions. Security test approaches may vary slightly, depending on what solution you’re building, but most often they come down to the following:
- Vulnerability assessment – this involves checking the web app for known weaknesses and vulnerabilities, such as SQL injections, cross-site scripting (XSS), cross-site request forgery (CSRF), and all other insecure authentication mechanisms.
- Penetration testing – also known as pen testing, this approach involves simulating real-world cyber attacks to identify potential security flaws in the web application. In this type of testing, testers use the vulnerabilities in the system to gain unauthorized access or manipulate sensitive data. This testing type is best performed manually to reveal security risks that automated tools can overlook.
- Code reviews – by reviewing the source code of the web application, testers can identify its weak points, such as insecure coding practices, improper input validation, insufficient data encryption, and so on.
- Data encryption testing – this type of testing helps testers evaluate if the data is encrypted both in transit (using HTTPS/TLS, etc.) and at rest (using algorithms like AES), mitigating the risk of data breaches and unauthorized access.
- Session management testing – during this testing, QA specialists assess if sessions are properly authenticated, encrypted, and invalidated after logout or idle periods.
Challenges of Testing Complex Web Apps
As web development grows bigger, the competition becomes more fierce every day. Now, it’s important not just to come up with a new app but to ensure that this app works smoothly across all devices and has something truly outstanding about it.
The key challenge is, there’s a ton of devices that people use to access web applications. They come from different brands and have different screen sizes and resolutions, making compatibility testing a real nightmare.
Emulators were introduced to address this issue. However, as good as they are, nothing beats testing on physical devices. This is exactly exactly where the problem lies. Unfortunately, only a scarce amount of companies have access to all the devices they need for testing, which can significantly slow down their progress.
Another challenge relates to the integration of different modules and components. It’s hard to make everything fit and work right, especially when you’re also trying to maintain your app’s compatibility with other browsers and devices. In most cases, this attempt leads to bugs and mistakes.
Rigorous testing is key to mitigating these issues and maintaining web quality while also delivering exceptional user experience across diverse devices and platforms.
Websites Vs. Web Applications: The Core Differences
Most users view URLs they visit as websites. However, that’s not always the case, as some sites are, in fact, web apps. But how are they different?
To put it simply, websites primarily serve informational purposes and have a simple structure: a few web pages linked together into a single resource. They have a rather simple HTML-based architecture. The only complex element you can find on the site is an embedded video. Websites don’t usually have any interactive components, and there’s no way for users to access its content beyond filling out a subscription or contact us form.
Web applications, in turn, are interactive programs that allow users to enter, receive, and manipulate data. They closely interact with the server (backend), constantly sending requests to it. They can be embedded in web pages, or web pages themselves can be the apps. Think of Facebook, Gmail, or YouTube.
Here’s a brief breakdown of the key differences between a website and a web application:
Aspect | Website | Web Application |
Nature | Mostly static | Interactive |
User Interface Testing | Easier due to simpler functionality, tasks, and UI | More complex, potentially harder to test |
Integration | Can be standalone or part of a site | Can be an integral part of a site or separate |
Development Complexity | Easier and less expensive | More complex and costly |
Resource Intensiveness | Less resource-intensive | More resource-intensive |
What Is Website Testing?
Website testing involves checking and assessing the functionality of a website to ensure it complies with requirements. QA teams need to perform a whole scope of work, including simulating various real-life usage scenarios and analyzing the behavior of the site under stress. Once an issue is discovered, testers report it to the development team. After the error is resolved, the website is re-tested.
Why Carry Out Website Testing?
Launching a website without prior testing is always a huge risk. Even if you eventually manage to make it work, the damage to your company’s reputation may be irreparable. So it’s worth investing a bit more time upfront rather than spending countless hours later trying to fix problems that could have been prevented with proper testing. Besides these obvious reasons, there are at least four benefits that make website testing an important part of the development process:
Validating the functionality
When deploying a new website, there’s always a risk that it might not perform as expected. Broken buttons, links that lead to nowhere, and broken pop-up forms – these are just a few of the problems that may arise due to lack of testing. Website testing helps mitigate these issues and ensure that all features and functionalities of the website work correctly.
Minimizing errors
Although sites aren’t as complex as web apps, this doesn’t mean they can’t have issues with the backend. Issues with data processing, server-side logic, database interactions, and API integrations are rather common with websites. Therefore, testers need to thoroughly test the backend components of the website to minimize errors and ensure that the server returns requests just as it should.
Making the website look professional
Spelling errors, faulty HTML structure, and conflicting CSS selectors are rather easy to miss, but not by users. They can see right away when the site doesn’t work correctly. So if you want to present your business as professionally as possible, the front end of the site should be given particular attention.
Boosting website security
Users don’t like buggy websites. If they encounter security vulnerabilities or – worse than that – experience data breaches while using your website, they are likely to lose trust in your company and may avoid using your services altogether. Website testing helps prevent that. By testing your site, you can detect security vulnerabilities before they can be discovered and used by malicious actors and provide your users with great UX.
Website Elements You Should Test for Maximum Results
Below, we go over the key elements of the site and areas of testing that should be given utmost care to ensure maximum effectiveness and user satisfaction.
A/B test your content
Comparing page performance is one of the most efficient ways to optimize user engagement. Here’s how it’s done: you craft page A, then copy it, then tweak certain elements such as the title, button text, or image. Now you’ve got page B. Next, you split your test group control into two parts and show them different versions of the page. The page with the higher conversion rate is a winner and can be used for further testing.
Check your CTAs
As with web page design, testing your CTAs can help maximize their effectiveness and drive user action. Start by assessing their placement and wording. Don’t be afraid to experiment with different colors, sizes, and positions to determine which combinations generate the highest click-through rates. Additionally, test different phrases to see which ones resonate most with your audience. By continuously evaluating and optimizing your CTAs, you can achieve a boost in user engagement and improve conversion rates.
Groom your user interface
The website interface should reveal the full potential of your website. Make sure the graphic design standards were taken into account during the development. Give the color, style, and layout a good look to eliminate any inconsistencies in your UI. Also, don’t forget about usability. The site should be not only visually appealing but also easy to navigate.
Refine your landing page
It’s not a rare occasion that people visit the site but can’t understand the nature of the company’s business due to vague landing pages. Make sure this doesn’t happen. Your landing page should clearly say what your offer is from the moment users land on your site.