The term refers to an initial evaluation stage within a broader Unified Software Development Framework (USDF). This primary assessment focuses on verifying foundational elements, such as basic functionalities and core component interactions, within a software system. For example, a “first level test” might involve checking if a user login process functions correctly with standard credentials.
This initial evaluation serves as a critical gateway, preventing more complex problems from propagating through subsequent stages of development. Success at this stage ensures that the underlying architecture is stable and ready to support further integration and testing. Historically, such preliminary testing has proven vital in reducing later-stage debugging efforts and minimizing project delays.