Introduction of System Testing

System testing 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.

Types of system tests

The following examples are different types of testing that should be considered during System testing:

• Functional testing
• User interface testing
• Usability testing
• Compatibility testing
• Model based testing
• Error exit testing
• User help testing
• Security testing
• Capacity testing
• Performance testing
• Sanity testing
• Regression testing
• Reliability testing
• Recovery testing
• Installation testing
• Maintenance testing
• Accessibility testing