This paper searches to model and use the knowledge of the system definition phase for defining testing models of agents' requirements and system functionalities. Context objective concept and a Model of Solution Use Context were used. The former as a model of system definition phase and the latter aiding to find agents' requirements and system functionalities. Social context objectives are adjusted to organizational context objectives and these ones adjusted to system context objectives. All context objectives are expressed in a linguistic template using a verb and its semantic functions. The proposed testing model verifies the correspondence between system context objectives and system operationalizable goals obtained from agents' requirements. For illustrating the proposed model, a system for selecting preregistered co-created contributions (ideas) is used.