From your links: "Requirements must be measurable, testable, related to identified business needs or opportunities, and defined to a level of detail sufficient for system design."
"Most requirements should be testable. If this is not the case, another verification method should be used instead (e.g. analysis, inspection or review of design). Testable requirements are an important component of validation.
Certain requirements, by their very structure, are not testable. These include requirements that say the system shall never or always exhibit a particular property. Proper testing of these requirements would require an infinite testing cycle. Such requirements are often rewritten to state a more practical time period."
Previous Topic
