c++ - Access Google Test fixture member -

i trying mock hardware abstraction layer function, uint32_t hw_epoch() writing fake, , fake calling mock method, let me verify hw_epoch() function begin called. considering simplified code below:

#include <stdint.h> #include "gmock/gmock.h"  using ::testing::return;  class foointerface {  public:     virtual ~foointerface() {}     virtual uint32_t m_hw_epoch() = 0; };  class mockfoo : public foointerface {  public:     mock_method0(m_hw_epoch, uint32_t());  private: };  // ----- test fixture: class footest : public ::testing::test {  public:     footest() : foointerfaceptr(&mockfooobj) {}     ~footest() {}      mockfoo mockfooobj;     foointerface* foointerfaceptr; };  // ----- fakes uint32_t hw_epoch() {     foointerfaceptr->m_hw_epoch();  // *** how can access foointerfaceptr?     return 5; }  test_f(footest, constructor) { } 

the footest fixture has member foointerfaceptr, how can access member free function uint32_t hw_epoch()?

thanks you...

per @πάντα ῥεῖ, not possible to free function. custom action possible solution.