SYSTEM TESTING PPT Ashima Wadhwa System Testing System

SYSTEM TESTING PPT Ashima Wadhwa

System Testing System testing is defined as testing the behavior of a system/software as per software requirement specification Testing the fully integrated applications including external peripherals in order to check how components interact with one another System testing enables us to test, Verify and validate both the business requirements as well as the applications architecture The application is tested thoroughly to verify that it meets the technical and functional specifications

Why system testing is required It is the first level of software testing where the application is tested as a whole It is done to verify, validate the functional, non functional, business, technical requirements of the software It also includes the verification and validation of software application architecture

Entry criteria for system testing Complete software system should be developed Unit testing must be completed Integration testing must be completed Specifications for the product have been completed Test scripts and schedules are ready

Exit criteria for system testing Application meets all the document requirements and functionalities Defects found during system testing should be fixed and closed All the test cases for the system should be executed No critical defects should be opened

How to write system test cases I. II. The system test cases are written in a similar way as we write in functional test cases. while creating system test cases we have to follow two points System test cases must cover the use cases and scenarios Must validate all types of requirements. UI, Functional, Technical, Non functional, Performance etc. .

System testing vs. Integration testing System Testing Integration Testing 1. From requirement specification 1. From interface specification 2. No visibility of code 2. Visibility of integration structure 3. It is a high level testing 3. It is a low level testing 4. The complete system is configured in a controlled environment 4. Test cases are developed with the express purpose of exercising the interface

SYSTEM TESTING § The system as a whole is tested to uncover requirement errors. § Verifies that all system elements work properly and that overall system function and performance has been achieved. Types: Alpha Testing Beta Testing Acceptance Testing Performance Testing

Alpha Testing It is carried out by the test team within the developing organization. Beta Testing It is performed by a selected group of friendly customers. Acceptance Testing It is performed by the customer to determine whether to accept or reject the delivery of the system. Performance Testing It is carried out to check whether the system meets the nonfunctional requirements identified in the SRS document.

DISCUSSION § In order to be cost effective, the testing must be concentrated on areas where it will be most effective. § The testing should be planned such that when testing is stopped for whatever reason, the most effective testing in the time allotted has already been done. § The absence of an organizational testing policy may result in too much effort and money will be spent on testing, attempting to achieve a level of quality that is impossible or unnecessary.

Thank you!!