NAME

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

SYNOPSIS

     #include <zt.h>

     typedef struct zt_visitor { ... } zt_visitor;

     Type                         Entry    Description
     void *                       id       Object implementing the interface
     struct zt_visitor_vtab *     vtab     Table of interface functions

DESCRIPTION

     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.

IMPLEMENTATION NOTES

     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.

SEE ALSO

     zt_visit_test_case(3), zt_visit_test_suite(3)

HISTORY

     zt_visitor first appeared in libzt 0.1

AUTHORS

     Zygmunt Krynicki <me@zygoon.pl>