libcruft-util/test/memory/deleter.cpp

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2015-11-19 16:46:44 +11:00
#include "memory/deleter.hpp"
#include "tap.hpp"
#include <memory>
struct setter {
setter (bool &_flag):
flag (_flag)
{ ; }
void release (unsigned *)
{ flag = true; }
bool &flag;
};
int
main (void)
{
bool flag = false;
{
// setup a pretend resource. we're not going to delete it, it's just
// to satisfy some required parameters. importantly it can't be null
// otherwise release is skipped.
unsigned *foo = reinterpret_cast<unsigned*> (0x01);
// setup the owner who will set a flag when the release operation is
// called
setter bar (flag);
// setup our non-default unique_ptr
std::unique_ptr<
unsigned,
util::memory::owner_deleter<
unsigned,
setter,
&setter::release
>
> qux (foo, bar);
}
// the flag should have been implicitly set to true via the unique_ptr
// callback above
util::TAP::logger tap;
tap.expect (flag, "owner_deleter calls registered callback");
return tap.status ();
}