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🧪 Types of Software Testing and What They Actually Accomplish
- Unit Testing: Tests individual functions or methods in isolation. Goal: To verify that each "unit" of your code (like a function or class) works as expected. Accomplishes: Catches bugs early, Makes refactoring easier, Improves code reliability
- Integration Testing: Tests multiple components or modules working together. Goal: To ensure integrations between services, modules, or layers are functioning. Accomplishes: Catches issues with data flow, Verifies contracts between components, Prevents regression when APIs change
- End-to-End (E2E) Testing: Tests the entire application from the user’s perspective, from frontend to backend. Goal: To simulate real user scenarios and verify the app works as expected. Accomplishes: Confirms the system works as a whole, Detects real-world failures, Increases confidence before release
- Regression Testing: Re-running old test cases to ensure existing functionality still works after updates. Goal: To prevent bugs from creeping back into previously working code. Accomplishes: Ensures stability with each release, Helps maintain trust in legacy systems, Reduces risk during updates/refactors
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