Innovati Software Services

System/Integration Testing

System testing of software or hardware is testing conducted on a complete, integrated system to evaluate the system's compliance with its specified requirements. System testing falls within the scope of black box testing, and as such, should require no knowledge of the inner design of the code or logic.

As a rule, system testing takes, as its input, all of the "integrated" software components that have successfully passed integration testing and also the software system itself integrated with any applicable hardware system(s). The purpose of integration testing is to detect any inconsistencies between the software units that are integrated together (called assemblages) or between any of the assemblages and the hardware. System testing is a more limiting type of testing; it seeks to detect defects both within the "inter-assemblages" and also within the system as a whole.

System testing is performed on an integrated system to assess system fulfillment with its specified requirements. The basic testing initiates with functional testing which verifies the functionality of the system having qualities such as performance and sturdiness.

Integration testing (sometimes called Integration and Testing, abbreviated "I&T) is the activity of software testing in which individual software modules are combined and tested as a group. It occurs after unit testing and before system testing. Integration testing takes as its input modules that have been unit tested, groups them in larger aggregates, applies tests defined in an integration test plan to those aggregates, and delivers as its output the integrated system ready for system testing.

Integration testing is a logical extension of unit testing. In its simplest form, two units that have already been tested are combined into a component and the interface between them is tested. A component, in this sense, refers to an integrated aggregate of more than one unit. In a realistic scenario, many units are combined into components, which are in turn aggregated into even larger parts of the program. The idea is to test combinations of pieces and eventually expand the process to test your modules with those of other groups. Eventually all the modules making up a process are tested together. Beyond that, if the program is composed of more than one process, they should be tested in pairs rather than all at once.

Integration testing is executed on individual software modules that are combined and tested. Principle of integration testing is to validate functional, performance and reliability.

If a project’s unit testing phase has been completed successfully, it would be easy to assume that individually proven components can be combined without issue into a working system. However, one component incorrectly functioning could inadvertently affect the behaviour of another component and, if undetected at a later stage of development, could lead to serious issues with the delivery.

This highlights the need for an in-depth system-level analysis to be completed before moving to the next step in the quality assurance lifecycle. Even the most ambitious system design is doomed to failure if it doesn’t account for optimal integration between system components. System Integration Testing (SIT) is conducted in order to verify a component’s ability to operate as expected with other components within the same environment, and is performed after unit testing in the testing life cycle.

Innovative Software Solutions’ System and Integration testing ensures that the communication of two or more components produces results that satisfy functional requirement. With our system and integration testing services we make certain that the application functionality check is done in an integrated environment through thorough module testing and wide-ranging interaction with external systems.

However the System testing and Integration testing are two diverse phases, we map them collectively - to make them work better. In integration testing, we create test cases with the purpose of using the interface between the components and System. Testing is conducted on the complete integrated system and on a simulated production environment.

Tests performed at Innovative Software Solutions comprise assessments of:

• Cross-server scenarios in client-server and web service applications
• End-to-end scenarios with multiple applications and solutions
• Software interoperability with other standards-based solutions

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