zt_visitor, zt_visitor_vtab — interface for discovering test suites and test cases

       Zygmunt Krynicki <me@zygoon.pl>

libzt 0.3.1                                     January 12, 2020                                   zt_visitor(3)

zt_visitor  is  an  interface  for  exploring  test suites and test cases. The visitor type is used as an
       argument to all test suites. Test suites can enumerate test cases and other test suites. It is a part  of
       the implementation and is not expected to be implemented by library users.

       zt_visitor_vtab is an opaque type comprised of functions that define the interface. The interface is only
       used internally so the implementation is private.

zt_visitor first appeared in libzt 0.1

       Interface values combine an object pointer with a function table pointer and are passed by value.

       An  interface  can  use  the  NULL  pointer as an object pointer if there is no need to refer to any data
       specific to an instance. The function table pointer cannot be null as it defines the unique aspect of the
       implementation.

       zt_visitor, zt_visitor_vtab — interface for discovering test suites and test cases

zt_visit_test_case(3), zt_visit_test_suite(3)

#include<zt.h>typedefstructzt_visitor{...}zt_visitor;TypeEntryDescriptionvoid*                       id       Object implementing the interface
       structzt_visitor_vtab*     vtab     Table of interface functions