What are the differences when testing websites and mobile applications?

Testing websites and mobile applications has several differences related to platform features and runtime environment:

• Environment and devices: Websites are tested in browsers on different OSes (Windows, macOS, Linux), while mobile applications are tested on various mobile devices and OSes (iOS, Android), requiring checks on different screen resolutions, performance, and device features.

• Interface and interaction: Websites are designed for mouse and keyboard, whereas mobile apps rely on touch controls, gestures, accelerometers, and other sensors.

• Network conditions: Mobile applications often operate under unstable or slow connections, making offline testing and connection recovery important.

• Installation and updates: Websites are accessible immediately, while mobile apps require installation and updates through app stores, adding testing stages.

• Security: Mobile apps require permission checks, camera access, geolocation, etc., whereas websites focus more on protection against XSS, CSRF, and other web vulnerabilities.

• Automation: Selenium and similar tools are often used for web testing, while Appium, Espresso, XCUITest are used for mobile testing.

Thus, testing mobile applications requires consideration of device specifics, touch input, and mobile OS features, whereas web testing focuses on browser technologies and different platforms.