This type of testing focuses on verifying whether each function or feature in the web application operates correctly according to specifications. Functional testing can be performed manually or via automated using tools like Selenium, which allows testers to create test scripts for repetitive tasks.
Testing Web APIs
A Web API (Application Programming Interface) serves as an interface between different software systems. Testing these interfaces involves verifying that they provide accurate results for various inputs and handle errors properly. Tools like Postman enable developers to automate this process by sending requests with specific parameters.
This type of testing validates data integrity within databases used by the web application. Testers verify if data is stored accurately, retrieved correctly when needed, and securely deleted when necessary.
User Interface (UI) Testing
UI testing examines the elements users interact with directly on a website or app, such as navigation menus and form input fields. Tools like BrowserStack enable simultaneous testing across multiple browsers, ensuring compatibility with all popular browsers, including Google Chrome and Internet Explorer.
Factors considered during UI/UX design include:
- User experience: How easily does your audience navigate your site?
- User interface design: Is your site visually appealing with an effective layout?
- Mobile responsiveness: Does your site function well on mobile devices?
Performance testing evaluates how quickly a web application responds to user requests and the system's stability under heavy load. Load testing tools like Apache JMeter can simulate multiple users accessing the website simultaneously.
Security testing aims to identify vulnerabilities in an application that could be exploited by attackers. Penetration testing simulates attacks against the web application to discover potential weaknesses that hackers might exploit. For example, the HackerOne platform lets organizations identify bugs and security issues, leveraging a community of ethical hackers and security professionals.
Learn more in our detailed guide to website security testing.