Sizing Software with Testable Requirements

Testable requirements indicate features such as system state, input of required data elements, conditions or actions to invoke requirements, and expected results. The main argument of this white paper is that determining the number of testable requirements is the most efficient way. System Size In addition to analyzing user requirements, other requirements, such as design requirements, change requests in maintenance releases, package sizes, changes required for packages, must also be met.

High quality software requires high testability. It is easier to find software defects with high testability and it is less likely to contain errors when such systems are sent to end users. The more difficult it is to provide quality assurance, the more difficult it is to reliably deploy high-quality applications in production. A brief review of functional and nonfunctional requirements that affect software quality, availability is a nonfunctional requirement. Consider an airline reservation system that can book flights (functional requirement). If the system is slow and frustrating (non functional requirement), the quality of the software will be lower.

"Nonfunctional requirements in software system engineering" requiring that the software describe how to perform this operation rather than describing the operation that the software performs. For example, software performance requirements, software external interface requirements, design constraints, software quality attributes. . Because nonfunctional requirements are difficult to test, it is usually subjective evaluation. General observations General observations - Stimulus stimuli - Reaction reactions: For example, "The system generates 10 dial tone", the system will generate a dial tone within 10 seconds. "Receive a call from the time of phone call" - Response - Response: For example, "The system records that the phone is busy", "The phone is busy within 1 microsecond after 1 microsecond Record ". After 2 seconds