Functionality testing is a type of software test that verifies whether a system operates correctly in accordance with its intended purpose and requirement specifications. It checks that given inputs produce the expected outputs and that business logic is implemented as specified. It is distinct from efficiency testing (which validates performance) and usability testing (which assesses ease of use).

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• 2010h22a #38ソフトウェアの品質評価の基準である品質特性には，機能性，信頼性，使用性，効率性などがある。機能性に関するテストとして，適切なものはどれか。