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SAs indicated as topic verification and validation are
another significant purpose of testing. Testing can
serve as metrics. It is used as a tool in verification
and validation process. A product can work under
specific situation or it can not work on the basis of
testing mechanism. We can use the same test on different
product under the same requirement and based on their
result we can compare. Similar factors can be tested to highlight quality as it can not be tested directly. Three factors functionality, engineering and adaptability for quality can be emphasized being part of software quality space. For consecutively lower levels of detail each element may be broken in to component factors. All relevant factors can be achieved from good testing. Importance of any specific factor depends on application. Any system where human lives are at risk must place excessive emphasis on consistency and reliability. Usability and maintainability are the key factors in the typical business system. For fully effeteness’ of our testing, it is necessary to measure each appropriate factor with solid quality. Tests which are written for validating the product are called clean tests or positive test. The product should be in such standardized form that a finite number of tests can validate it in all situations. If your software/product does not give expected result even in one test, the software does not work. The tests which were broke the application or give unexpected result is called dirty test or negative test. Software application must contain exception handling to pass on the dirty tests. Testing is required accurate effort, time and cost. A testable design is a design that can be easily validated and maintained |
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