SOFTWARE TESTING

Software testing life cycle identifies what test activities to carry out and when (what is the best time) to accomplish those test activities. Even though testing differs between organizations, there is a testing life cycle. Software testing is any activity aimed at evaluating an attribute or capability of a program or system and determining that it meets its required results. The purpose of testing can be quality assurance, verification and validation, or reliability estimation. Testing can be used as a generic metric as well. Correctness testing and reliability testing are two major areas of testing. Software testing is a trade-off between budget, time and quality. During Software Development in each step testing is required when one module is completed testing is start for that module or we can say unit testing
Software Testing Life Cycle consists of six phases:

1. Test Planning.
2. Test Analysis.
3. Test Design.
4. Construction and verification.
5. Testing Cycles.
6. Final Testing and Implementation.
7. Post Implementation.

Software testing has its own life cycle that intersects with every stage of the SDLC. The basic requirements in software testing life cycle is to control with software testing – Manual, Automated and Performance. Good testing provides measures for all relevant factors. The importance of any particular factor varies from application to application. Any system where human lives are at stake must place extreme emphasis on reliability and integrity. In the typical business system usability and maintainability are the key factors, while for a one-time scientific program neither may be significant. Our testing, to be fully effective, must be geared to measuring each relevant factor and thus forcing quality to become tangible and visible.