Software Testing
Software testing is the process of evaluating and verifying that a software application or system performs according to its specified requirements. It involves executing the software with the intent of finding defects (bugs), ensuring quality, and verifying that the system is ready for use. Testing is an integral part of the software development lifecycle, aiming to mitigate risks, improve reliability, and provide confidence that the software will function correctly in its intended environment.
Key Concepts
- Unit Testing: Testing individual components or functions of the software in isolation to ensure they work as expected.
- Integration Testing: Verifying that different modules or services in the system work together correctly when combined.
- System Testing: Evaluating the complete, integrated software system as a whole to verify its compliance with the specified requirements.
- Regression Testing: Re-running previously passed tests to ensure that new code changes haven’t introduced defects into existing functionality.
- Acceptance Testing: Final testing conducted (often by the user or customer) to determine if the system meets their needs and is ready for deployment.
Common Patterns or Tools
- Test-Driven Development (TDD): A development practice where tests are written before the code they are intended to verify, leading to better-designed, more testable software.
- Automated Testing: Using software tools to execute tests automatically, allowing for frequent, consistent, and efficient verification of the codebase.
- Continuous Integration (CI): Integrating code changes into a shared repository several times a day, accompanied by automated builds and tests to identify issues early.
- Test Coverage: A metric used to measure the extent to which the source code of a program has been tested by the test suite.