C++ Testing (Agent Skill) Agent-focused testing workflow for modern C++ (C++17/20) using GoogleTest/GoogleMock with CMake/CTest. When to Use - Writing new C++ tests or fixing existing tests - Designing unit/integration test coverage for C++ components - Adding test coverage, CI gating, or regression protection - Configuring CMake/CTest workflows for consistent execution - Investigating test failures or flaky behavior - Enabling sanitizers for memory/race diagnostics When NOT to Use - Implementing new product features without test changes - Large-scale refactors unrelated to test coverage or f…