What is Software Testing?
Software testing is the process of verifying and validating that a software application is bug free,
meets technical and user requirements, and handles exceptional and boundary cases effectively.
It assesses the functionality, performance, and compliance of the software against expected
requirements.
Steps in Software Testing:
1. Verification: Ensures the software correctly implements specific functions ("Are we building
the product right?").
2. Validation: Ensures the software meets customer requirements ("Are we building the right
product?").
Importance of Software Testing:
Early defect identification: Bugs are found and fixed before software delivery.
Quality improvement: Uncovering and fixing defects enhances software quality.
Customer satisfaction: Reliable, secure, and high performance software satisfies customers.
Scalability: Identifies and addresses scalability issues.
Cost and time saving: Early testing reduces long term costs and time.
Types of Software Testing:
1. Functional Testing: Validates software against functional requirements (e.g., unit testing,
integration testing, system testing, smoke testing).
2. Nonfunctional Testing: Checks nonfunctional aspects like performance, scalability, and
usability (e.g., performance testing, stress testing).
3. Maintenance Testing: Ensures software updates and changes do not introduce new issues
(e.g., regression testing).
Methods of Testing:
1. Manual Testing: Testers manually execute test cases without automation tools.
2. Automation Testing: Testers write scripts and use software to automate testing processes,
increasing efficiency and coverage.
