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Testing is the process of evaluating something (like software, a product, or knowledge) to see how well it works, meets requirements, or performs, often involving experimental checks, examinations, or trials to find defects, measure ability, or gain insights, ranging from educational exams to complex software quality assurance. It ensures functionality, reliability, and quality by identifying issues early, with methods including manual checks, automated scripts, and specialized techniques like A/B testing or chaos engineering.
Types of Testing
Software Testing: Evaluating software for bugs, performance, and security.
Manual Testing: Human testers interact with the application.
Automated Testing: Using scripts and tools for repetitive tasks.
Unit Testing: Testing small parts of code.
System/Integration Testing: Testing how different parts work together.
Acceptance Testing: Verifying the system meets user needs.
Educational Testing: Assessing knowledge or skills through exams.
Product/Scientific Testing: Checking safety, effectiveness, or compliance (e.g., medicine, consumer goods).
Key Concepts
Verification: Checking if a product meets specifications.
Defect Detection: Finding errors, not proving something is bug-free.
Continuous Testing: Integrated throughout the development lifecycle (DevOps).
Testing in Production: Testing in a live environment with real data, using techniques like feature flags or A/B tests.
Purpose of Testing
Improve quality and reliability.
Reduce costs by finding issues early.
Ensure security and performance.
Validate functionality and usability.
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