Verifying the functionality of individual units or components of code in isolation, typically performed by developers using test frameworks like JUnit, NUnit, or pytest.
Validating the interactions and interfaces between integrated components or systems, ensuring proper communication and data exchange, often conducted after unit testing and before system testing.
Evaluating the behavior of an entire system as a whole, including interactions between integrated components, to verify that it meets specified requirements and functions correctly in its intended environment.
Assessing whether a system meets business requirements and user expectations, typically performed by end-users or QA teams using acceptance criteria, user stories, or predefined test cases.
Ensuring that recent code changes do not adversely affect existing functionality, regression testing involves retesting previously tested features and functionalities to detect and prevent regression defects.
Evaluating the responsiveness, throughput, scalability, and stability of a system under various load conditions, including stress testing, load testing, and endurance testing, to identify performance bottlenecks and optimize system performance.
Identifying vulnerabilities and ensuring the security of a system against potential threats and attacks, security testing includes activities such as penetration testing, vulnerability scanning, and security code reviews.
Assessing the usability and user-friendliness of a system or application, usability testing involves observing users as they interact with the system to identify usability issues, navigational challenges, and user experience enhancements.
Verifying that a system or application functions correctly across different environments, devices, browsers, and operating systems, ensuring compatibility with diverse user platforms and configurations.
Investigating the behavior of a system through ad-hoc and unscripted testing, allowing testers to explore and uncover defects, usability issues, and edge cases that may not be addressed by formal test cases.
Leveraging automation tools and scripts to execute tests, validate functionality, and generate test reports efficiently, improving test coverage, repeatability, and speed of testing processes.