Software System Integration Testing

What is system integration testing.

Software system integration testing.

System integration testing is defined as a type of software testing carried out in an integrated hardware and software environment to verify the behavior of the complete system. Integration testing sometimes called integration and testing abbreviated i t is the phase in software testing in which individual software modules are combined and tested as a group. System testing is testing of the software application as a whole to check if the system is complaint with the user requirements. Difference between system testing and integration testing.

System integration testing sit involves the overall testing of a complete system of many subsystem components or elements. Test drivers and test stubs are used to assist in integration testing. System integration testing sit is a high level software testing process in which testers verify that all related systems maintain data integrity and can operate in coordination with other systems in the same environment. The purpose of this level of testing is to expose faults in the interaction between integrated units.

It is testing conducted on a complete integrated system to evaluate the system s compliance with its specified requirement. It occurs after unit testing and before validation testing. The main objective of sit is to ensure that all software module dependencies are functioning properly and the data integrity is preserved between distinct modules of the whole system. The system under test may be composed of hardware or software or hardware with embedded software or hardware software with human in the loop testing.

Sit consists initially of the process of assembling the constituent parts of a system in a logical cost effective. System integration testing sit is the overall testing of the whole system which is composed of many sub systems. It is an end to end user perspective testing intended to find defects in the software system.