simulation-testing

Write, extend, or debug a CppModel-based simulation test, in C (the SDK's CModel.h API - CppModel_* functions and its CMODEL_CYCLIC/CMODEL_SIMULATE macros - directly or via a project's own helpers) or C++ (cppmodel::Simulation from cppmodel.hpp, CppModelBase::Simulation in older code, directly or via a project's own wrapper class). Use when asked to add test coverage to a CppModel simulation, when a simulation test fails and the reason isn't obvious from stdout, or when tightening timing-based assertions against real execution data.